| 单词 | humus |
| 例句 | Is it simply stopped dead in its tracks, lost in humus, wasted? The Lives of a Cell 1974-01-01T00:00:00Z Narrow corridors open into immense libraries; glass doors give way to hothouses overflowing with the smells of humus, wet newspaper, and lobelia. All the Light We Cannot See 2014-05-06T00:00:00Z Light sandy soils suffer far more heavily than humus types. Silent Spring 1962-09-27T00:00:00Z He was moving on four good legs, strong and swift, and he could feel the ground underfoot, the soft crackling of fallen leaves, thick roots and hard stones, the deep layers of humus. A Clash of Kings 1998-11-16T00:00:00Z A thousand years of humus lay thick upon the godswood floor, swallowing the sound of her feet, but the red eyes of the weirwood seemed to follow her as she came. A Game of Thrones 1997-08-04T00:00:00Z She inhaled the perfume of the drenched earth, the rotten leaves, and the humus, which awakened an unknown pleasure in all her senses. The House of the Spirits: A Novel 1982-01-01T00:00:00Z Then the bacteria, fungi, and earthworms will get to work breaking the old roots down into rich brown humus. The Omnivore's Dilemma 2006-04-11T00:00:00Z But the point is, the humus wasn’t the finished product. | Q&A: The Architect Harry Gesner, Still Riding That Wave 2012-03-14T23:30:22Z As it decays, it adds beneficial humus to the earth. Americans love mulch — and many of us are misusing it 2017-09-12T04:00:00Z In insalubrious micro-venues, however, even newer bands from lower down the food chain are carrying on, enriching the humus that nourishes the ecosystem. Wolf Alice; Mens Adventures; Blackeye; Must – review 2013-01-13T00:06:15Z The soil creatures convert the leaves into humus, you’re keeping yard waste on site, and the price is right. Americans love mulch — and many of us are misusing it 2017-09-12T04:00:00Z As he put it, if a gardener entered the Garden of Eden, “he would sniff excitedly and say: ‘Good Lord, what humus!’ A Gardening Book for Those Who Hate Gardening Books 2017-05-31T04:00:00Z For that type of thing, it's actually humus, and getting organic matter in the soil, so that the soil is more resilient against extra water. How to garden through climate change 2022-09-11T04:00:00Z They go wrong when they present trophy gardens built for wealthy people who don’t know their hummus from their humus. Forget the perfect trophy garden. Today’s finest landscapes are positively wild. 2018-03-13T04:00:00Z What: Leaves converted to humus by time and microbes. Americans love mulch — and many of us are misusing it 2017-09-12T04:00:00Z This allows the caterpillars to pupate in the soil beneath the tree, and countless organisms to live off the leaf litter and then the soil humus that it becomes. Perspective | The sturdy, steadfast oak is the perfect tree for troubled times 2021-04-13T04:00:00Z Weight is an issue, and the plants are growing in a purpose-made light mixture of sand, compost, humus and volcanic rock. Can container gardening wipe out urban food deserts? These folks think so. 2015-09-08T04:00:00Z A little farther along are whole drifts of the hardy but deciduous native ginger, Asarum canadense, which spreads assertively in rich humus but is easily controlled. Perspective | How the National Arboretum got its ferns and became a civic treasure 2019-10-28T04:00:00Z He was talking about the rain splattering into the soil, humus lifting up in waves from the ground. Postcard From My Past: Crossing Into Syria 2017-01-30T05:00:00Z The last, completely rotted layer is built up of a thick and dark organic matter called humus, a type of soil that provides the ideal environment in which plants grow and thrive. Leave your dead leaves on the ground this fall 2023-10-12T04:00:00Z Epiphytes have two types of roots: clinging aerial roots, which absorb nutrients from humus that accumulates in the crevices of trees; and aerial roots, which absorb moisture from the atmosphere. Fundamentals of Biology 2015-01-01T00:00:00Z Temperatures in the piles decrease and the compost matures into a dark and crumby humus, resembling rich organic soil in both look and smell, the zoo said. Woodland Park Zoo’s popular Zoo Doo compost sale returns 2023-04-07T04:00:00Z Chernozem is richer than other soils in nutrients such as humus, phosphorus and nitrogen and extends deep into the ground, as much as 1.5 metres. Soils of war: The toxic legacy for Ukraine's breadbasket 2023-03-01T05:00:00Z Most home landscapes are a mix of trees, shrubs and perennials, conditions most like a woodland, where coarse materials, like fallen leaves and twigs, gradually decompose into a fine-textured, biologically rich layer of humus soil. Pro tips for mulching your perfect Pacific Northwest garden 2022-09-17T04:00:00Z Related to this, one very significant source of carbon compounds is humus, which is a mixture of organic materials from dead plants and prokaryotes that have resisted decomposition. Biology for AP Courses 2022-06-09T00:00:00Z The fertile soil is rich in humus formed from decaying leaves and other organic matter. Miller & Levine Biology 2018-01-01T00:00:00Z The upper subsoil zone, called regolith, is a porous mixture of humus and highly weathered sediment. An Introduction to Geology 2017-01-01T00:00:00Z It was filled with pine needles and loamy humus. In New York’s Shawangunk Mountains, old haunts and old friends 2022-06-03T04:00:00Z The bones, the T-shirt, or the book disappears and comes out as a nutrient-rich, dark brown humus. Produce stickers are the scourge of the compost pile 2022-04-18T04:00:00Z Organic matter serves as food for earthworms, insects, bacteria and fungi that transform it into soil nutrients and humus. How to make the best of clay soil in the garden 2022-02-15T05:00:00Z After a few months, you’ll have a sweet-smelling humus to enrich the soil in your pots and garden spaces. 7 simple and eco-friendly things you can do to help protect our planet 2022-01-11T05:00:00Z Soils range from poor to rich, depending on the amount of humus they contain. An Introduction to Geology 2017-01-01T00:00:00Z Food retailer Vkusvill’s advert pictured the four women from the family in a kitchen, and said they liked the shop’s Japanese rice balls with mushrooms and its humus. Russian LGBT family from Vkusvill ad leaves country after death threats 2021-08-04T04:00:00Z To mimic that process, he puts down three inches of mulch, maybe an inch of which has decomposed into humus by season’s end, benefiting soil health and fertility. The Smart Way to Grow Roses 2021-02-17T05:00:00Z Mutt bounded toward her, its tail upending a pot of orchids and scattering humus all over the floor. Seeing 2020: A vision of Seattle’s future from 1984 2020-12-13T05:00:00Z Slowly, these invaders changed the forest ecosystem by converting leaf litter into humus. 'The aliens to watch': how the humble earthworm is altering the Arctic 2020-08-25T04:00:00Z O Horizon: The top horizon is a thin layer of predominantly organic material, such as leaves, twigs, and other plant parts that are actively decaying into humus. An Introduction to Geology 2017-01-01T00:00:00Z These mulches also enrich the soil with humus, which helps keep soils moist and well aerated. Gardening: How to reach a truce in the war with weeds 2020-08-04T04:00:00Z Now his first forest is 3 metres tall, its floor a thick layer of humus. Fast-growing mini-forests spring up in Europe to aid climate 2020-06-13T04:00:00Z It is decayed organic matter, or humus, that improves soil structure and promotes fertility when added to the garden. A Step-by-Step Guide to Composting 2020-05-27T04:00:00Z No, says Jordão, “It smells like humus, like the forest floor. It’s that fungus, leafy smell.” The no-flush movement: the unexpected rise of the composting toilet 2019-12-09T05:00:00Z A Horizon: The next layer, called topsoil, consists of humus mixed with mineral sediment. An Introduction to Geology 2017-01-01T00:00:00Z Paper adds little to the soil, however, in terms of humus or nutrients. Gardening: How to reach a truce in the war with weeds 2020-08-04T04:00:00Z As they do, they enrich the ground with soil-building humus, release nutrients into the soil, and nourish beneficial soil microorganisms. Cover your ground, for your plants’ sake | Produced by Advertising Publications 2019-10-27T04:00:00Z Eventually, some of this carbon becomes humus, a stable form of organic matter that’s really hard to destroy. Climate-friendly farming is taking root in New York 2019-05-10T04:00:00Z They said that after igniting the tree, the fire spread to the thick layer of decomposed plant material on the ground known as humus. China says lightning caused forest fire that killed 31 2019-04-05T04:00:00Z B Horizon: Also called subsoil, this layer consists of sediment mixed with humus removed from the upper layers. An Introduction to Geology 2017-01-01T00:00:00Z She brought tubs of rice, chicken and humus for Baha, because the hospital does not provide food. Israel shoots to wound, not kill. That has led to a wave of amputations in Gaza 2018-06-08T04:00:00Z But she likes the look of the Moroccan-inspired bowl of bulgur wheat, spiced beetroot and humus - she's also keen on vegetables. Tesco aims to make dough with vegan options 2018-01-09T05:00:00Z Light, sandy soils suffer far more heavily than humus types, for example, and combinations of chemicals often seem to do more harm than separate applications. Silent Spring—I 2017-01-03T05:00:00Z The composting process employs billions of microorganisms to break down organics into the essential component of soil called humus. How New York Is Turning Food Waste Into Compost and Gas 2017-06-02T04:00:00Z The organic component of soil, called humus, is a rich source of bioavailable nitrogen. An Introduction to Geology 2017-01-01T00:00:00Z But as rain falls on farms in the foothills of the village, it carries nutrient-rich humus from the forest, enriching the soil and adding to the bounty of crops and wild food. 'This forest is like an old friend' - India's tribal women fight for land ownership 2016-10-21T04:00:00Z He pinched up some of the earth and rubbed it between his fingers: rich, dark humus. The Secrets of the Wood Wide Web 2016-08-07T04:00:00Z And carbon, the building block of the rich humus that gives soil its density and nutrients, has more than tripled. A Boon for Soil, and for the Environment 2016-05-17T04:00:00Z Bleached pelvic crests and the knobby ends of shins poked up from the humus alongside an unbroken wishbone. The Looming Threat of Avian Flu 2016-04-13T04:00:00Z Portraits of Assad and his father, Hafez, looked down from billboards, walls and windows on Latakia's busy streets, packed shops and cafes serving kebabs and humus. An Associated Press reporter describes a trip through Syria organized by the Russian military, from the calm of a coastal Assad stronghold to a village being shelled by militants 2016-03-06T05:00:00Z Ibrahim and Mohammed now run a popular and busy little stall in Rio de Janeiro, selling home-made humus, kibbe and other Middle Eastern pastries. Migrant crisis: Middle East refugees who chose Brazil over Europe - BBC News 2015-09-15T04:00:00Z Even with about 120 deer rapidly decaying at the site, there was no odor beyond that of humus and a whiff of ammonia. Road-kill deer get mulched as U.S. states turn to composting 2015-01-30T05:00:00Z “Wow,” he said as he walked past a group of women sitting on blankets, eating humus and talking about the changing fabric of the city. Once dreaded, D.C. alleys become fun, even chic They are not red like a red fox; rather, it’s the red of a forest animal camouflaged by dried pine needles, bark, and the dank humus of decaying hardwoods. Night-Hunting Coyotes in N.C. Risky for Red Wolves 2012-03-28T11:45:03.783Z In the arctic zone they form 10% of the flora; they will flourish in soils rich in humus which are too acid to support grasses. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z The upper few inches of soil is humus rich in organic matter; below this is clay. Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala 2011-12-25T03:00:10.957Z It tells, among other things, about the value of humus—decayed leaves, grass, etc.—to the soil. The Adventures of a Grain of Dust 2011-11-22T03:00:12.257Z A sandy loam base with good humus content is desirable. The Tomato 2011-11-20T03:00:13.470Z The abundant lime in dead leaves is active in the formation of humus, which is decayed vegetable matter. Trees Worth Knowing 2011-10-13T02:00:48.357Z The soil consists of a rich black humus that is soft and mellow except during the period of greatest dryness, being overlain by a varying depth of vegetable debris and leaf-mold. Journal of Entomology and Zoology Volume 11, Number 4, December 1919 2011-10-07T02:00:22.027Z The organic matter found in water may be derived from various substances such as urea, amido compounds, and cellulose; humus bodies derived from soil washings and swamps may also be present. Chlorination of Water 2011-09-13T02:00:32.243Z And besides they supply this same soil with a great deal of humus—the grass that they use for bedding. The Adventures of a Grain of Dust 2011-11-22T03:00:12.257Z Or a compost heap may be prepared with successive layers of soil and manure or other humus making material. The Tomato 2011-11-20T03:00:13.470Z The hill rose sharply, perhaps for six hundred feet, and over its surface were scattered large stones, and stones are rare indeed in this land of vegetable humus. The Sea and the Jungle 2011-08-30T02:00:30.350Z Hymenomycetes are a very large group containing over 11,000 species, most of which live in soil rich in humus or on fallen wood or stems, a few only being parasites. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The humus compounds of swamps and muskeg are usually associated with the characteristic colour of the water derived from these sources. Chlorination of Water 2011-09-13T02:00:32.243Z But the desert vegetation, dying and decaying—it is then called "humus"—not only knits the soil together but absorbs moisture and ammonia from the air and so helps grow good crops. The Adventures of a Grain of Dust 2011-11-22T03:00:12.257Z The tomato stands drouth better than many of our crops, especially if the soil holds moisture fairly well, either naturally or through a liberal humus content. The Tomato 2011-11-20T03:00:13.470Z So that, with the exception of light sandy soils, where the humus is needed, we shall do well to feed the rose garden liquid nourishment. Making a Rose Garden 2011-07-29T02:00:21.533Z Most of them grow on living plants or on dead vegetable remains, very often on fallen wood; a number, however, are found growing on earth which is rich in humus. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Green crops turned under, grass roots, stubble, leaves, long manure, etc., form humus. Farm Gardening with Hints on Cheap Manuring Quick Cash Crops and How to Grow Them 2011-05-10T02:00:58.433Z Jules Favre proposes to this base Chamber, the abettor of our disasters, the humus of the Empire, to seize upon the government. History of the Commune of 1871 2011-05-07T02:00:33.113Z The ideal is a medium sandy loam, well supplied with humus for good water holding capacity. The Tomato 2011-11-20T03:00:13.470Z Firs, Vancouver, B. C. Of still more lowly habits are the ferns, mosses, and lichens which form a thick, luxuriant, and ever-varied carpet over the black humus soil beneath. North America 2011-05-05T02:00:20.027Z Besides this loss of nitrogen encountered in the burning of the trash, the organic matter which would later form humus is completely destroyed. The Philippine Agricultural Review Vol. VIII, First Quarter, 1915 No. 1 2011-04-13T02:00:12.527Z A lump of manure that has been lying in the ground for a year or two has become, practically, a mass of humus. Farm Gardening with Hints on Cheap Manuring Quick Cash Crops and How to Grow Them 2011-05-10T02:00:58.433Z These soils are rich vegetable humus or clay loam with good clay subsoil. Canada West 2011-03-03T03:00:58.087Z Soil should be free of disease and nematodes, of good physical character, full of humus and nutrients. The Tomato 2011-11-20T03:00:13.470Z A larger amount of organic matter would also be converted into humus. The Religion of Geology and Its Connected Sciences 2011-02-28T03:00:28.890Z Propagation.—The place selected for seedbed and nursery should be well drained, with a loamy soil, the richer in humus the better. The Philippine Agricultural Review Vol. VIII, First Quarter, 1915 No. 1 2011-04-13T02:00:12.527Z One was to supply the soil with needed humus; the other to furnish winter protection and prevent washing. Farm Gardening with Hints on Cheap Manuring Quick Cash Crops and How to Grow Them 2011-05-10T02:00:58.433Z Its great wealth is its deep black humus varying in depth from ten inches to three feet, overlying a warm subsoil. Canada West 2011-03-03T03:00:58.087Z The closer spacings are found on lighter soils where humus, plant food, and moisture are not too abundant. The Tomato 2011-11-20T03:00:13.470Z Dead vegetable matter made the humus; into that the roots of the living tree were struck, and because there had been vegetation in the past, there was vegetation in the future. Toronto of Old 2011-02-10T03:00:45.907Z This is a valuable power, because the fall of its needles gradually forms a humus, and so provides food for other plants which could not exist on raw sand. Wayside and Woodland Trees A pocket guide to the British sylva 2010-12-25T03:00:16.510Z It must contain plenty of humus or vegetable matter to prevent packing. How to Prosper in Boll Weevil Territory 2010-12-24T03:00:31.740Z These soils are in general rich, but deficient in nitrogen and somewhat in humus; and in limited areas white alkaline salts are injuriously in excess. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" He must sow and plow under crops of pease, beans, or other legumes that will furnish both humus and nitrogen in excess of what they remove. The Cocoanut With reference to its products and cultivation in the Philippines He created in experience a humus which took the place of a former soil, and justified itself by fitting it into the whole process of disintegration of the earth's surface. Creative Intelligence Essays in the Pragmatic Attitude These leaves are rich in potash, and as they readily decay, they produce an admirable humus. Wayside and Woodland Trees A pocket guide to the British sylva 2010-12-25T03:00:16.510Z Weeds plowed under add some humus and fertility to the soil, though in a very much less degree than clover or cow peas. Seeds of Michigan Weeds Bulletin 260, Michigan State Agricultural College Experiment Station, Division of Botany, March, 1910 The usual mode of propagation is by eggs, which are oval, numerous, provided with a calcareous shell, and buried in humus, whence they are hatched about four months later. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" Further by breaking down, with production of “humus,” a complex of colloidal “unsaturated” bodies of acid function, they fulfil important chemical functions by interaction with the mineral soil constituents. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" As soils are cultivated, the tendency is for the humus to become “burned out” and to have a reduced moisture-holding capacity. A Living from the Land The Oak is most abundant on clay soils, but is at its best when growing in deep sandy loam, where there is also plenty of humus. Wayside and Woodland Trees A pocket guide to the British sylva 2010-12-25T03:00:16.510Z This is the black earth known as chernozem, which is rich in humus. Area Handbook for Romania Away from the river, approaching the mountains, there is a broader area that is basically similar, but the subsoils are more porous and have allowed the humus and loess to leach downward from the surface. Area Handbook for Bulgaria A mixture of sand, clay, and humus is called "loam." Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place Don’t try to produce crops without maintaining the humus supply in the soil. A Living from the Land Fresh mineral soils, rich in humus, are the best for it. Wayside and Woodland Trees A pocket guide to the British sylva 2010-12-25T03:00:16.510Z Other species, especially the alligators, make a very large nest of leaves, twigs and humus, scraping together a mound about a yard high and two or more yards in diameter. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6 "Coucy-le-Château" to "Crocodile" The exhaustion of the soil under cotton culture is chiefly due to the loss of humus, and nature soon puts this back in the excellent climate of the cotton-growing belt. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 5 "Cosway" to "Coucy" All gradations between the two extremes are suited to the needs of crops, from the melons on sandy soil, to celery that prefers deep, cool soil, and cranberries that demand muck—just old humus. Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place Therefore, the more humus that can be plowed into the soil, other conditions being equal, the greater is the ability of the plants growing in that soil to withstand drouth. A Living from the Land This is when it is growing in moist loam, upon which rain or floods have washed down good layers of humus from woods at a higher elevation. Wayside and Woodland Trees A pocket guide to the British sylva 2010-12-25T03:00:16.510Z The softer rocks of the intermediate mountains crumble easily into course and infertile sands and gravels that take many years to acquire humus. Area Handbook for Albania The result is a great destruction of the humus of the soil, and great leaching and washing, especially in the light loams of the hill country of the United States. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 5 "Cosway" to "Coucy" But the needful third element is decaying plant and animal substances, called "humus." Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place Incidentally, the incorporation of large quantities of humus in the soil creates a condition of acidity which may call for the application of lime as a corrective. A Living from the Land Beneath the thin covering of humus, he struck a solid surface and his fingers slid along it. The World That Couldn't Be The trees generate most of the humus themselves, as their canopies interlace tightly in mature forests, permitting relatively little undergrowth to flourish on the forest floors beneath them. Area Handbook for Albania If the burning-up of humus and the leaching of the soil could be prevented, there is no reason why a cotton soil should not produce good crops continuously for an indefinite time. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 5 "Cosway" to "Coucy" When a forest is cleared there is a spongy humus on the ground surface that is extremely rich, but this washes away in a single season. Our Southern Highlanders In such cases the application of lime, increasing the humus content, and deeper plowing will be found helpful. A Living from the Land With mounting alarm, he explored the ground, scratching at the humus. The World That Couldn't Be Their needles, along with rapid decay of their softer dead wood, however, can create deep humus. Area Handbook for Albania When the subsoil is very light and poor and deficient in humus, the placing of the better surface soil below and the infertile lower strata above, trenching would be a positive detriment. Asparagus, its culture for home use and for market: a practical treatise on the planting, cultivation, harvesting, marketing, and preserving of asparagus, with notes on its history These wood rats were taken in rocks and crevices at the base of a small hill in thick vegetation growing in deep humus. Mammals from Tamaulipas, Mexico Such tests will show the presence of adequate amounts of humus, and indicate the acidity content. A Living from the Land Washings from the land, during the slow-moving centuries, pushed the shoreline ever outward; the humus of decaying vegetation raised the ground surface still higher. The Industrial Canal and Inner Harbor of New Orleans History, Description and Economic Aspects of Giant Facility Created to Encourage Industrial Expansion and Develop Commerce New alluvial deposits tend to be gravelly, without humus, and require many years before sufficient vegetation to make them fertile can be established. Area Handbook for Albania Are humus and humic acid of great practical importance? The Elements of Agriculture A Book for Young Farmers, with Questions Prepared for the Use of Schools Moreover, more than half of this mud deposit consisted of humus, or boggy soil. Farthest North Being the Record of a Voyage of Exploration of the Ship 'Fram' 1893-1896 Vol. I The Value of Humus.—In addition to the chemical elements of plant food, all productive soils contain decaying vegetable matter, generally classified under the term “humus.” A Living from the Land The Mississippi built up its sandbars again, storms shaped them above the waves, marsh grass raised the surface with its humus, and another forest grew. The Industrial Canal and Inner Harbor of New Orleans History, Description and Economic Aspects of Giant Facility Created to Encourage Industrial Expansion and Develop Commerce If the soil lacks humus, a cover-crop of clover or other legume might well be sown in early summer to be plowed under in late fall. Manual of American Grape-Growing So long as these slopes were forest-clad, the decaying leaves and humus gave a sponge-like character to the soil upon them, and it gave out the water gradually to the streams below. Where Half The World Is Waking Up The Old and the New in Japan, China, the Philippines, and India, Reported With Especial Reference to American Conditions The humus that will be left in the soil as the vegetable matter decays increases the porosity of the road surface making it more absorbent than soil without humus. American Rural Highways Use manure and green crops to supply humus. A Living from the Land In other places the humus, or vegetable mould, is partly consumed by fire, and the remainder is in a short time blown away by wind or washed away by water. Wild Life on the Rockies The vine is fastidious as to soil, requiring a well-drained warm soil, and one which is abundantly supplied with humus. Manual of American Grape-Growing He kept the power on, sweeping the distorter back and forth until all that remained was a large pool of slime which thinned, then oozed into the humus. The Weakling Choose not the poorest soil by any means, but a good, sandy loam in which there is a considerable amount of humus. The Pecan and its Culture To be brief, the soil is highly nitrogen deficient, and completely lacking in humus. Shepherd of the Planets By this time, too, there is sufficient humus on the floor to allow the seeds of many other species to germinate. Wild Life on the Rockies Diana demands poor, dry, gravelly soil without much humus or nitrogen. Manual of American Grape-Growing Where one has to contend with such conditions he should make an effort to create a friable soil with a supply of humus by adding the material needed. Tomato Culture: A Practical Treatise on the Tomato Nothing will insure a good growth in the young trees so well as the nitrogen and humus added to the soil by leguminous crops. The Pecan and its Culture The humus averages perhaps 3 or 4 per cent of the soil mass and sometimes constitutes as much as 75 per cent. The Economic Aspect of Geology He pointed out, further, that the comparative insolubility of humus in water, or even in alkaline solutions, told against its acceptance as correct. Manures and the principles of manuring Riparia gloire should be planted only on rich, deep alluvial soil containing an abundance of plant food and humus, what would be called good garden land, such as river bank soil not liable to overflow. Manual of American Grape-Growing Where there are many present it is an indication that the earth is in poor condition, compacted, and needing humus. Making a Lawn The soil in the pecan orchard needs humus, vegetable matter; so does the soil in any other kind of orchard, and to obtain results it must be provided. The Pecan and its Culture Soil originate from rocks, igneous, sedimentary, and "metamorphic" by processes of weathering, and by the mixing of the altered mineral products with decayed plant remains or humus. The Economic Aspect of Geology First, then, with regard to the absorptive power of sand, clay, and humus. Manures and the principles of manuring It is derived from the Celtic uim, the ground, Latin humus. Notes and Queries, Number 204, September 24, 1853 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. A small quantity of this humus, mixed with fairly good loam, will make good loam of it all, and suitable for sustaining plant life. Making a Lawn Fires do not permanently help the cattle ranges, but injure them by burning the humus and grass seeds. Conservation Reader The outer portion of the bulb is formed of intricately interwoven threads, among which are entangled soil and humus particles. Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. The first subject which Liebig discusses is the scientific basis of the so-called "humus" theory. Manures and the principles of manuring By exposure to the air it appears gradually to acquire the properties of the humus of the soil, or of stable manure, which are vegetable matters, altered by the same exposure. Peat and its Uses as Fertilizer and Fuel Place half an ounce of dry humus on an iron plate or fire-shovel and heat strongly in a stove. Ontario Teachers' Manuals: Nature Study As the years pass humus begins to collect upon the ground and finally restores it to much the same condition it had before the fire. Conservation Reader In orchard conditions, the moisture is conserved by the addition of humus to the land, and by thorough judicious tillage; and in dry regions it is supplied by irrigation. The Apple-Tree The Open Country Books—No. 1 While Liebig, therefore, can scarcely be said to have been the first to controvert the humus theory, he certainly dealt it its death-blow. Manures and the principles of manuring We shall employ the term humus to designate this mixture, whether occurring in peat, swamp-muck, salt-mud, in composts, or in the arable soil. Peat and its Uses as Fertilizer and Fuel Weigh the part left and find what fraction of the humus consisted of vegetable material. Ontario Teachers' Manuals: Nature Study The more there is of this humus in the soil, the more thriftily plants will grow. Conservation Reader All of these nut trees are usually influenced more by the fertility, humus, and moisture content of the soil, than by any particular soil type. Northern Nut Growers Association Report of the Proceedings at the 41st Annual Meeting Pleasant Valley, New York, August 28, 29 and 30, 1950 One of the most striking of the arguments he brought forward was the fact that the humus of the soil itself consisted of the decayed vegetable matter of preceding plants. Manures and the principles of manuring When a plant perishes, its conversion into humus usually begins at once. Peat and its Uses as Fertilizer and Fuel The sand dries out much faster than the humus. Ontario Teachers' Manuals: Nature Study During the many years that have passed since the fire swept this region, decaying vegetation has been slowly accumulating and forming humus again. Conservation Reader Leguminous cover crops are particularly valuable for building up the nitrogen and humus content of the soil when plowed under. Northern Nut Growers Association Report of the Proceedings at the 41st Annual Meeting Pleasant Valley, New York, August 28, 29 and 30, 1950 Having thus controverted the humus theory, he then goes on to deal with the question of the source of the various plant constituents. Manures and the principles of manuring The soil of these States was originally very rich in humus. The $100 Prize Essay on the Cultivation of the Potato. Prize offered by W. T. Wylie and awarded to D. H. Compton. How to Cook the Potato, Furnished by Prof. Blot. Sand is warmer than clay, also the presence of humus raises the temperature. Ontario Teachers' Manuals: Nature Study Soils that are rich in humus are usually very fertile. Conservation Reader The addition of lime when the soil is acid and of organic matter when humus becomes depleted will aid in better soil aeration and an increased moisture supply. Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report Wooster, Ohio, September 3, 4, 5, 1946 According to the two first-mentioned investigators, certain colourless bacteria effect the formation in the absence of light from humus and carbonates a body resembling in its nature cellulose. Manures and the principles of manuring The growing of legumes to furnish humus, and even the growing of winter cover crops, such as rye, to be plowed under in the spring, cannot be too strongly recommended as soil improvers. Northern Nut Growers Association Report of the Proceedings at the Fourteenth Annual Meeting Washington D.C. September 26, 27 and 28 1923 Enumerate the services rendered to the soil by humus. Ontario Teachers' Manuals: Nature Study This vegetable matter, when it is completely decayed, we call humus. Conservation Reader It is suggested that the composts act mainly by modifying the course of humus decomposition, thus bringing about drastic changes in the biological activities of the organic substrate of the soil. Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report Wooster, Ohio, September 3, 4, 5, 1946 He stated in his published writings that the fertility of a soil depended really upon its humus; for this substance, with the exception of water, is the only source of plant-food. Manures and the principles of manuring There is only one word to say about pecan rosette, and that is—humus—the disease is cured by the application of humus. Northern Nut Growers Association Report of the Proceedings at the Fourteenth Annual Meeting Washington D.C. September 26, 27 and 28 1923 In Experiment 10, let the corn grow for some time and determine whether the very rich humus is the best in the end. Ontario Teachers' Manuals: Nature Study We know that the seeds of certain trees find difficulty in sending their roots down through the humus to the soil beneath. Conservation Reader If we think the soil needs more humus, we repeat the process another year. Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948 The old theory, therefore, that the presence of humus in a soil is a condition of fertility, is not so far removed from the truth. Manures and the principles of manuring The lime not only made some mineral plant available, but it attacked the organic matter of the soil, making it ready for immediate use and leaving the land deficient in humus. Right Use of Lime in Soil Improvement The difference is due largely to the absence of humus. Ontario Teachers' Manuals: Nature Study The destruction of the humus as well as the trees has been so complete that the seeding of a new forest is slow work. Conservation Reader All garden refuse should find its way there, to be transmuted by the alchemy of sun and rain, and the disintegrating forces of nature into that most valuable of soil constituents—humus. Amateur Gardencraft A Book for the Home-Maker and Garden Lover Where there is an abundance of humus in the soil there is likely also to be an abundance of nitrogen. Manures and the principles of manuring The fluid from which they have been precipitated contains two substances, crenic and apocrenic acids, while the soil still retains what has been called insoluble humus. Elements of Agricultural Chemistry Plants.—Our study of humus shows the value of vegetable matter in soil. Ontario Teachers' Manuals: Nature Study The burning of the humus, when a fire sweeps the forest, is the next greatest loss to that of the timber itself. Conservation Reader A life that is to be eternal must strike its roots through all the superficial humus down to the very heart of things. Expositions of Holy Scripture Ephesians; Epistles of St. Peter and St. John The most elaborate investigation of the composition of humus has been carried out by Mulder. Manures and the principles of manuring The particular phenomena of vegetation also afford abundant evidence that humus cannot be the only source of carbon. Elements of Agricultural Chemistry The dead leaves and fallen stems provide humus, and, on account of the water-holding capacity of humus, the forest floor acts like a sponge, preventing floods in wet seasons and droughts in dry times. Ontario Teachers' Manuals: Nature Study This will add humus to the soil, and allow air and moisture to penetrate it. Making a Garden of Perennials My place of 15½ acres just west of Toronto, is in a small valley containing sandy, gravelly and clay soils, while the creek bottom land is rich black humus. Northern Nut Growers Association, Report of the Proceedings at the Fourth Annual Meeting Washington D.C. November 18 and 19, 1913 Most soils are improved by the addition of humus. Manures and the principles of manuring On the other hand, our daily experience affords innumerable examples of plants growing luxuriantly in soils and places where no humus exists. Elements of Agricultural Chemistry The worms also drag leaves, sticks, and grass into their holes and thus add to the humus. Ontario Teachers' Manuals: Nature Study Most all virgin soils contain ample plant food, but the deeper part lacks the result of the action of air, sun and frost, and the natural humus of decayed leaves and grasses. Making a Garden of Perennials Most of the crops require tillage, and that is exhaustive of the store of humus. Crops and Methods for Soil Improvement The water-absorbing and retaining powers of a soil are increased by this addition of humus, while it enables the soil to attract an increased amount of moisture from the air. Manures and the principles of manuring By a more careful treatment it is possible to distinguish and separate humus, and in soils lying on chalk or limestone, calcareous matter or carbonate of lime. Elements of Agricultural Chemistry Moist humus soil and partial shade are the best conditions for the growth of these wild wood flowers. Ontario Teachers' Manuals: Nature Study The spent manure I mentioned as fine for covering bulbs, is splendid for this purpose and as it is of the same color as the soil, its presence is hardly noticeable; besides it adds humus. Making a Garden of Perennials The amount of humus thus obtained is large, and the benefit of the mulch is an important item. Crops and Methods for Soil Improvement Mr. Littlepage: No, it's a hilly clay with a considerable humus and set in clover. Northern Nut Growers Association, Report of the Proceedings at the Third Annual Meeting Lancaster, Pennsylvania, December 18 and 19, 1912 The term humus is generic, and applied by chemists to a rather numerous group of substances, very closely allied in their properties, several of which are generally present in all fertile soils. Elements of Agricultural Chemistry The great value of humus in the soil will appear in later studies. Ontario Teachers' Manuals: Nature Study Reduce a block of marble to impalpable powder; mix this powder with humus, or vegetable earth; knead them well together; water the mixture; let it rot for a year, two years—time does not count. Diderot and the Encyclopædists Volume II. Land deficient in humus forms a crust after a rain, and a tiny plant suffers. Crops and Methods for Soil Improvement It did not notice Forrester scurrying away in the shape of an ant through the leaves and thick humus of the jungle floor. Pagan Passions The earlier chemists and vegetable physiologists attributed to the humus of the soil a much more important function than it is now believed to possess. Elements of Agricultural Chemistry Third, deficiency of moisture due to low humus content of the soil or drought. Northern Nut Growers Association Report of the Proceedings at the Thirty-Eighth Annual Meeting Guelph, Ontario, September 3, 4, 5, 1947 Lime breaks down vegetable matter and makes its constituent plant foods quickly available, but prevents a build-up of humus in the soil. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 One field may be in condition to respond fully to the use of commercial fertilizers, while another is too deficient in humus for best results. Crops and Methods for Soil Improvement Fill in with at least four inches—better six—of good garden soil containing plenty of humus so that it may allow water to soak through readily. Gardening Indoors and Under Glass A Practical Guide to the Planting, Care and Propagation of House Plants, and to the Construction and Management of Hotbed, Coldframe and Small Greenhouse These experiments show that plants can grow and produce seed when the most scrupulous care is taken to deprive them of every trace of humus. Elements of Agricultural Chemistry For best growth and development the chestnut requires a fairly deep, well-drained soil, rich in mineral elements and humus, with a fair degree of moisture and plenty of sunlight. Northern Nut Growers Association Report of the Proceedings at the Thirty-Eighth Annual Meeting Guelph, Ontario, September 3, 4, 5, 1947 With proper conditions of moisture and aeration, sawdust, when mixed with quickly decaying material like kitchen garbage, can be reduced to an excellent, usable humus in three summer months. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 As we pass from the northern to the southern states, the preservation of soil fertility grows more difficult and at the same time the restoration of humus becomes easier. Crops and Methods for Soil Improvement Pea comes earliest to maturity in light, rich soil, abounding in humus: hence the practice of adding decomposed leaves or vegetable mould has a very beneficial effect. The Field and Garden Vegetables of America Containing Full Descriptions of Nearly Eleven Hundred Species and Varietes; With Directions for Propagation, Culture and Use. But Saussure has gone further, and shown that even when present, humus is not absorbed. Elements of Agricultural Chemistry Most of the trees had been planted on an eroded hillside deficient in humus. Northern Nut Growers Association Report of the Proceedings at the Thirty-Eighth Annual Meeting Guelph, Ontario, September 3, 4, 5, 1947 Leave the cover crop over winter and turn it under in the spring for humus. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 Soon the supply of humus is exhausted, the soil lies lifeless, and the stores of available nitrogen and potash are in a worse depleted state than formerly. Crops and Methods for Soil Improvement The soil should be moderately rich, rather light, deep, well drained, but moist and well supplied with humus. Culinary Herbs: Their Cultivation Harvesting Curing and Uses Farmers and gardeners like a black soil containing a good deal of humus because they find it very rich, and we shall see later on why this is so. Lessons on Soil This vegetable addition to the soil is generally known as humus. Agriculture for Beginners Revised Edition Cultivation, with attention to humus and fertility, are necessary to proper tree growth and nut production. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 The free use of organic matter to maintain the supply of humus defers the time when commercial fertilizers should be used. Crops and Methods for Soil Improvement That is, the soil should be well supplied with humus, preferably derived from decaying leguminous crops or from stable manure. Culinary Herbs: Their Cultivation Harvesting Curing and Uses V. it was pointed out that dark coloured soils rich in humus are greatly favoured by gardeners and farmers. Lessons on Soil But we must add humus, or vegetable matter, to the soil. Agriculture for Beginners Revised Edition When the material had reached the condition of humus, the bacterial activity decreased to the point where fertility was restored. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 Many of the plants used in providing humus for the soil are better foragers for fertility than other plants that follow, sending their roots deeper into the subsoil or using more inert forms of fertility. Crops and Methods for Soil Improvement Thus practiced it is very effective in conserving moisture and in adding the humus which is so necessary to the soil. Apple Growing Then a bedlam of deafening sound burst forth anew, a mighty deluge of unbearable noise as the millions of tons of pulverized rock, humus and metal fell back. The Black Star Passes To summarize: if we want to make our soil better year by year, we must cultivate well, drain well, and in the most economical way add humus and plant food. Agriculture for Beginners Revised Edition If the soil is infertile, some form of humus should be worked in at the time of planting. Northern Nut Growers Association Thirty-Fourth Annual Report 1943 The Legumes.—Any plant that grows and rots in the soil adds to the productive power of the land if lime is present, but plants differ in value as makers of humus. Crops and Methods for Soil Improvement It now remains to point out another important function—that of a green manure crop adding humus and plant food to the soil. Apple Growing Plunging himself down into the black humus, with a root's gushing zest, where we can only rot dead; and his tips in high air, where we can only look up to. Fantasia of the Unconscious Select for this crop a deep and moderately light, sandy loam which has an open subsoil and which is rich in humus. Agriculture for Beginners Revised Edition When this humus is once exhausted there is no way to repair the damage but to wait for the slow rock-decay. Checking the Waste A Study in Conservation Its most peculiar characteristic is its ability to thrive in a poor, compact soil that contains little humus. Crops and Methods for Soil Improvement Sown in late July in the North they will produce a great bulk of humus and add much moisture to the soil, especially if they cover the ground well. Apple Growing Here it thrives on the humus and decayed vegetable matter and sends long, winding tendrils down to the ground. Boy Scouts in the Philippines Or, The Key to the Treaty Box If the land selected for potatoes is lacking in humus, fine compost or well-rotted manure will greatly increase the yield. Agriculture for Beginners Revised Edition Poorly drained soils or very light soils deficient in humus are also not suitable. Northern Nut Growers Report of the Proceedings at the Twenty-First Annual Meeting Cedar Rapids, Iowa, September 17, 18, and 19, 1930 When land is being prepared for a seeding to grass or clover, the supply of manure should not be plowed down wherever the breaking-plow brings soil to the surface that is deficient in humus. Crops and Methods for Soil Improvement Both are great nitrogen gatherers and as they are rank and rapid growers add large quantities of humus to the soil. Apple Growing Alsike clover has much the same adaptation to soils as the medium and mammoth varieties, but will grow better than these on low-lying soils well stored with humus. Clovers and How to Grow Them It of course adds nitrogen to the soil and at the same time supplies the soil with a large amount of organic matter to decay and change to humus. Agriculture for Beginners Revised Edition A soil of volcanic origin is covered with a rich humus of decaying vegetation, and this, with a soft humid atmosphere, makes an ideal home for cacao. Cocoa and Chocolate Their History from Plantation to Consumer A profitable agriculture is dependent upon a high percentage of humus in the soil. Crops and Methods for Soil Improvement On lands rich in humus and in plant food and level so as to be easily tillable, cultivation is without doubt the best system. Apple Growing Fertilizers.—On certain soils low in fertility and much deficient in humus, it may be necessary to apply fertilizers in some form before clovers will grow vigorously. Clovers and How to Grow Them Leguminous crops supply both humus and nitrogen and, at the same time, improve the subsoil. Agriculture for Beginners Revised Edition It is beyond question that any soil, humus, or other discolored matter thrown into an excavation with ordinary soil or subsoil will be apparent for an indefinite time afterwards. Archeological Investigations Bureau of American Ethnology, Bulletin 76 Improved physical condition is likewise given to a sandy soil, the humus binding the particles together. Crops and Methods for Soil Improvement They grow rapidly and rank, making a large bulk of humus, without the expense of seeding. Apple Growing Such are sandy soils that have been much worn by cropping, and also stiff clays in which the humus has become practically exhausted. Clovers and How to Grow Them If land is well supplied with humus, commercial fertilizers are perhaps safer than manure, for when these fertilizers are used the amount of plant food is more easily regulated. Agriculture for Beginners Revised Edition On this small tract more than half the rock is bare, with scanty patches of soil and humus in the crevices and on flat places. Archeological Investigations Bureau of American Ethnology, Bulletin 76 The humus obtained from plant-roots, stubble, and fallen leaves forms a large percentage of all the humus obtained by land whose fertility is not well guarded by owners. Crops and Methods for Soil Improvement It is deeper rooted, makes a better top growth, and therefore adds more nitrogen and more humus to the soil than the clovers. Apple Growing When clovers are sown for pasture only, or to fertilize the soil speedily and to supply it with humus, the largest amounts of seed are sown. Clovers and How to Grow Them It is always desirable to have a bountiful supply of humus in land on which oats are to be planted. Agriculture for Beginners Revised Edition The last is due to top soil containing a large amount of humus from decaying vegetation. Archeological Investigations Bureau of American Ethnology, Bulletin 76 This is poor practice from the standpoint of soil fertility because the draft upon humus is heavy in a close rotation embracing a tilled crop and small grain. Crops and Methods for Soil Improvement It is a fact that where orchards receive good cultivation and a liberal supply of humus commercial fertilizers give but medium results. Apple Growing The black humus soils of the prairie vary much in their suitability for growing medium red clover. Clovers and How to Grow Them As a cover-crop for poor land it adds much humus to the soil and makes capital grazing. Agriculture for Beginners Revised Edition The humus and grit may be represented by sand and small stones, and peat or leaf soil, all mixed with loam. Hardy Perennials and Old Fashioned Flowers Describing the Most Desirable Plants, for Borders, Rockeries, and Shrubberies. Fir much prefers mineral soil to start in, as is easily seen from the far greater frequency of seedlings on road grades than on adjacent undisturbed ground covered with humus and rotten wood. Practical Forestry in the Pacific Northwest Protecting Existing Forests and Growing New Ones, from the Standpoint of the Public and That of the Lumberman, with an Outline of Technical Methods Such an application will not only go far toward supplying the necessary nitrogen, phosphoric acid, and potash, but especially if coarse will add considerable humus and improve the physical condition of the soil. Apple Growing Since, through the medium of its roots, it stores the ground with humus, such crops should come after it as feed generously on humus, as, for instance, corn and potatoes. Clovers and How to Grow Them These roots loosen and pulverize the soil, and their decay, at the end of the growing season, leaves much humus in the soil. Agriculture for Beginners Revised Edition The auriferous clays of the Gold Coast are thinly covered with humus, and are not buried, as in Australia, by ten to thirty feet of unproductive top-drift. To The Gold Coast for Gold, Vol. II A Personal Narrative And, what is more injurious, the humus—i. e., the decomposed vegetable matter in the top soil—is destroyed. Practical Forestry in the Pacific Northwest Protecting Existing Forests and Growing New Ones, from the Standpoint of the Public and That of the Lumberman, with an Outline of Technical Methods I have five types of soil to grow my trees in, stiff clay, rich gravel, quicksand and humus, light sand and silt or bottom land, well drained. Northern Nut Growers Association, report of the proceedings at the sixth annual meeting Rochester, New York, September 1 and 2, 1915 It would fully supply the needs of the crops alternating with it in the line of humus, and also in that of nitrogen. Clovers and How to Grow Them The addition of humus in the form of vegetable manures will keep the soil in the porous condition needed. Agriculture for Beginners Revised Edition Red raspberries will succeed on most any kind of soil so long as it is kept reasonably well fertilized and supplied with humus. Trees, Fruits and Flowers of Minnesota, 1916 Embracing the Transactions of the Minnesota State Horticultural Society,Volume 44, from December 1, 1915, to December 1, 1916, Including the Twelve Numbers of "The Minnesota Horticulturist" for 1916 There is first the supply of unfailing moisture, with a yearly subsoiling of humus unknown to arid lands. The Canadian Commonwealth The process is called "rotting" and the product, the black, gummy stuff of a fertile soil, is called "humus." Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries On the same soils, early sowing would probably be preferable, even when much reduced in humus, providing they were in a honeycombed condition at the time of sowing. Clovers and How to Grow Them They are mixtures of clay, silt, some sand and large amounts of humus. The First Book of Farming Thrives well upon new rich soils that are well supplied with humus. Trees, Fruits and Flowers of Minnesota, 1916 Embracing the Transactions of the Minnesota State Horticultural Society,Volume 44, from December 1, 1915, to December 1, 1916, Including the Twelve Numbers of "The Minnesota Horticulturist" for 1916 It is due also to the presence on the ground of decaying leaves and twigs, or humus. General Science The legumes fulfil the three requisites of the cover crop: protection, humus, and the storing of nitrogen. The Fat of the Land The Story of an American Farm The same would prove true of the sandy soils low in humus, since these do not honeycomb at any season. Clovers and How to Grow Them Swamp Muck is a dark brown or black swamp soil consisting of large amounts of humus or decaying organic matter mixed with some fine sand and clay. The First Book of Farming Seeds of native plants which you wish to naturalize should be gathered and sowed immediately in a shaded, well drained location, where the soil has some humus. Trees, Fruits and Flowers of Minnesota, 1916 Embracing the Transactions of the Minnesota State Horticultural Society,Volume 44, from December 1, 1915, to December 1, 1916, Including the Twelve Numbers of "The Minnesota Horticulturist" for 1916 The water which thus passes into the humus and the soil beneath does not remain there, but slowly seeps downward, and finally after weeks and months emerges at a lower level as a stream. General Science One was an Indian occupation site beneath a layer of early 17th-century humus, which, in turn, was covered by the earthen rampart of a Confederate fort of 1861. New Discoveries at Jamestown Site of the First Successful English Settlement in America It may also be necessary to bury an occasional crop in order to put the land quickly in a condition to produce some desired crop, the growth of which calls for large supplies of humus. Clovers and How to Grow Them They act as an immense strainer, collecting the suspended particles from the water, and with them and their bodies building beds of soil rich in organic matter or humus. The First Book of Farming Constant dressings of farmyard or stable manure result in the formation of humus, which, as it becomes sour, has to be sweetened by the solvent influence of lime. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition It consists of an accumulation of decayed leaves mixed with inorganic matter, forming, together, a rich composition known as humus. Studies of Trees Three brick drains, buried beneath the humus line, are identified with 17th-century houses. New Discoveries at Jamestown Site of the First Successful English Settlement in America By growing it as a rotation crop in these valleys it may be made to furnish the soil indefinitely with supplies of nitrogen and humus. Clovers and How to Grow Them When organic matter has undergone a certain amount of decay it is called humus, and these soils are called organic soils or humus soils. The First Book of Farming Limestone and chalk are usually rich in lime and phosphates, but deficient in humus, silica, sulphur, and alkalies. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The fallen leaves decompose, mix with the soil and form a dark-colored material known as humus. Studies of Trees Is there any quick-witted farmer who shall tell us with anything like definiteness what the phosphates have contributed to all this, and how much the nitrogenous manures, and to what degree the deposits of humus? The Atlantic Monthly, Volume 12, No. 73, November, 1863 Such fertilization usually calls for both humus and readily available plant food, and these are most cheaply supplied by growing certain green crops and plowing them under, or by applying farmyard manure. Clovers and How to Grow Them The black soils of the woods, swamps and prairies, contain large amounts of humus. The First Book of Farming The importance of humus—the black earthy substance resulting from the decay of vegetation—in a soil is that it contains in an assimilable form many of the ingredients essential to plant life. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The humus supplies the tree with a considerable portion of its food and helps to absorb and retain the moisture in the soil upon which the tree is greatly dependent. Studies of Trees The atmosphere, moreover, had become heavy, there was a damp greenhouse-like warmth; the air, stationary as it was, had an odour as of humus, freshly turned over. His Masterpiece Next in adaptation, probably, come slough soils, even though covered with humus to a considerable depth, providing that clay lies under the humus. Clovers and How to Grow Them Which of these terms will apply to the texture of sand, which to clay, which to humus, which to the garden soil, which to a soil that plant roots can easily penetrate? The First Book of Farming Thus there is accumulation of humus and a decomposition of the rock proceeding together, and a loam of some sort is the result. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The woodland is too open and grass has taken the place of the humus cover. Studies of Trees An American wood powder, known as Bracket's Sporting Powder, consists of soluble and insoluble nitro-lignine, mixed with charred lignine, humus, and nitrate of soda. Nitro-Explosives: A Practical Treatise It may precede such crops as revel in humus and that feed ravenously on nitrogen. Clovers and How to Grow Them We find then that texture of the soil depends largely on the relative amounts of sand, silt, clay and humus that it contains. The First Book of Farming These are supplied almost entirely from the atmosphere itself, though, to a limited extent, the presence in the soil of humus or vegetable matter contributes also. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition In the grove, you can demonstrate the decomposition of the fallen leaves, the formation of humus and its value to the tree. Studies of Trees It contains a small portion of vegetable matter or humus. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. Farmyard manure supplies both humus and fertility, but in its absence, a crop of rye buried in the soil will insure a stand of clover. Clovers and How to Grow Them Then fill them nearly full respectively, of dry, sifted, coarse sand, clay, humus soil, and garden soil. The First Book of Farming Wholesome soil may, then, be defined thus: It is such ground as contains a sufficient supply of humus and nitrogen and all of the essential mineral components of organic tissue. Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration The more vegetable matter in the humus, the darker the soil; and therefore a good soil such as one finds on the upper surface of a well-tilled farm has quite a dark color. Studies of Trees Liebig tells us, that "however great the proportion of humus in a soil, it does not necessarily follow it will produce wheat"—and cites the country of Brazil. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. Nor is it usually sown after a grass crop which has brought humus to the land. Clovers and How to Grow Them We find then that the power of soils to absorb and hold moisture depends on the amount of sand, clay, or humus which they contain, and the compactness of the particles. The First Book of Farming The humus introduced by the liberal applications of manure has made it black. The Foundations of Japan Notes Made During Journeys Of 6,000 Miles In The Rural Districts As A Basis For A Sounder Knowledge Of The Japanese People When, however, a soil contains an unusual quantity of humus, it is known as “muck,” and when there is still more humus present we find peat. Studies of Trees The hard and compact humus of which the soil of the Nile valley is composed, contracts every year after the subsidence of the inundation, and thus becomes almost incompressible. Manual of Egyptian Archaeology and Guide to the Study of Antiquities in Egypt They thus furnish humus and nitrogen for the sustenance of the blue grass. Clovers and How to Grow Them The garden soil after drying is not as stiff as the clay nor as loose as the sand and humus. The First Book of Farming This saves going all along the rows with a shingle to pat down the topsoil or the humus or the magnesia bottles or whatever else is uppermost. Mince Pie If it has vegetable matter or humus in it, then its value as a corn-growing soil is increased. The Library of Work and Play: Gardening and Farming. Sand with a little loam, or very fine sand, if a few green crops are turned under to provide humus, are ideal poultry soils. The Dollar Hen Its value in putting humus into the same may prove equally high. Clovers and How to Grow Them This is because it is very likely a mixture of all three, the sand and the humus checking the baking. The First Book of Farming The topsoil and the humus may be a little mixed, but we are not going to sort them out by hand. Mince Pie By loam we mean clay, sand and humus. The Library of Work and Play: Gardening and Farming. At the same instant the shock of a bullet threw a shower of dead pine needles and humus over Elliott. The Rules of the Game On timber soils newly cleaned the early sowing would be quite safe where the young plants are not liable to be killed after germination, because of the abundance of humus in them. Clovers and How to Grow Them It is for this reason that strong loams and clay soils absorb and hold three times as much water as sandy soils do, while peaty or humus soils absorb a still larger proportion. The First Book of Farming Tom discovered a spot where he thought the ground had been blackened, but Dave thought the blackened appearance due to humus soil, and so nothing came of the argument. The High School Boys' Fishing Trip The necessary conditions for the growth of good bacteria are air, water, darkness, humus matter and freedom from acid condition of the soil. The Library of Work and Play: Gardening and Farming. Topsoil may also be deepened by dust storms that pick up particles of humus from dry lands and carry them to moister areas. Civilization and Beyond Learning from History The influences which promote it are the presence of humus, liberal cultivation, and sometimes weather influences, as rain and frost. Clovers and How to Grow Them The clay and humus soils carry crops through dry weather better because of their power to hold moisture and to absorb or soak up moisture from below. The First Book of Farming What sour land the Romans had they corrected with humus making barnyard manure, or the rich compost which Cato and Columella recommend. Roman Farm Management The Treatises of Cato and Varro So add humus in the form of manure. The Library of Work and Play: Gardening and Farming. So, too, when we heat vegetable humus to 100°, nitrification is arrested, because the ferment is killed. Scientific American Supplement, No. 446, July 19, 1884 But few soils are so deficient in fertility that they will not grow clover if supplied with humus. Clovers and How to Grow Them In three similar boxes or pots place wet sand, wet clay, and wet humus. The First Book of Farming One of the best means of doing this is to fill them with humus, so that the water will not leach through them rapidly. Manual of Gardening (Second Edition) The lime soil, light and sweet, needs humus too. The Library of Work and Play: Gardening and Farming. The soil is a loose clay, deep-red or brown, impregnated with iron and, where unclothed with humus, cold and infertile, as the spontaneous aloe shows. To the Gold Coast for Gold A Personal Narrative in Two Volumes.—Volume I As it is rather grown on soils deficient in humus than on those plentifully supplied with the same, fineness in the seed-bed is not so important as it is with some classes of prairie soils. Clovers and How to Grow Them It will be seen that of the dry soils the humus is the warmest. The First Book of Farming When this organic matter--as animal and plant remains--decays and becomes thoroughly incorporated with the soil, it forms what is called humus. Manual of Gardening (Second Edition) Add to such a soil, humus in the shape of stable manure in large quantities and this same poor soil becomes very good. The Library of Work and Play: Gardening and Farming. Most of the rocks are highly magnetic, and are separated by thin layers of humus with carbonised plant-roots. To the Gold Coast for Gold A Personal Narrative in Two Volumes.—Volume I Where the humus soils of the prairies are deep and are underlaid with clay, white clover will grow much better in the subsoil, if laid bare, than in the surface soil. Clovers and How to Grow Them Why were the wet humus and clay cooler than the wet sand? The First Book of Farming The addition of this humus makes the land mellow, friable, retentive of moisture, and promotes the general chemical activities of the soil. Manual of Gardening (Second Edition) We can roughly divide the soil into three classes and call these sand, clay, and humus. The Library of Work and Play: Gardening and Farming. They were well watered, of course, by the melting surface of the ice and fairly well nourished by humus still attached to the roots, and in some places formed beds of considerable thickness. Travels in Alaska Only by this supply of humus can the garden be kept in that light, friable, spongy condition which is absolutely essential to luxuriant vegetable growth. Home Vegetable Gardening — a Complete and Practical Guide to the Planting and Care of All Vegetables, Fruits and Berries Worth Growing for Home Use Of the dry soils, then, the humus averaged warmest, because, on account of its dark color, it absorbed heat more readily than the others. The First Book of Farming It is more likely to be lost by leaching through the land than the mineral substances are, especially if the land lacks humus. Manual of Gardening (Second Edition) So the soils we speak of as sandy soils have mixed with the sand other matter, sometimes clay, sometimes vegetable matter or humus, and often animal waste. The Library of Work and Play: Gardening and Farming. Soon after the snow is off the round it rises through the dead needles and humus in the pine and fir woods like a bright glowing pillar of fire. The Yosemite Fill in with at least four inches—better six —of good garden soil containing plenty of humus, that it may allow water to soak through readily. Home Vegetable Gardening — a Complete and Practical Guide to the Planting and Care of All Vegetables, Fruits and Berries Worth Growing for Home Use Decaying organic matter or humus is really the life of the soil and it is greatly needed in most of the farm soils of the eastern part of the country. The First Book of Farming O Thought! monstrous and splendid flower springing from the humus of our time-honoured instincts!… Clerambault The Story of an Independent Spirit During the War It would not be bad to add some humus in order to have an even greater supply of nitrogen. The Library of Work and Play: Gardening and Farming. The soil having lain fallow for centuries, and being rich in humus, had produced more sugar cane than he could grind. Inca Land Explorations in the Highlands of Peru Moreover, the large portion of it which is held by the humus, or forest floor, drains off still more gradually and keeps the springs and sources of the brook full all through the summer. American Big Game in Its Haunts The nitrogen exists largely in the humus of the soil and it is only as the humus decays that the nitrogen is made available. The First Book of Farming The litter that has not been decomposed, dead microbes and microarthropods, along with their excretions and secretions, mix and form humus. Free from School Up yonder, on the old marshy plateau, the fertility was such, thanks to the humus amassed during long centuries, that Mathieu did not even manure the ground as yet. Fruitfulness The milpa system of agriculture involves clearing the forest by fire, destroys valuable humus and forces the farmer to seek new fields frequently. Inca Land Explorations in the Highlands of Peru This mould or humus, being acted on by moisture and air, evolves carbonic acid, which is dissolved by rain. The Antiquity of Man These powers depend, as we learned in Chapter IV, on the texture of the soil or the relative amounts of sand, silt, clay and humus contained in the soil. The First Book of Farming This humus is in a complex form and therefore not available to the plants for use. Free from School The retentive power of humus is but half as great as that of calcareous sand. The Earth as Modified by Human Action Higher still is the bank of yellow clay, capped with shallow humus. Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2 Mangrove, that horror of the African voyager, shines by its absence; and the soil is not mud, but humus based on gravels or on ruddy clays, stiff and retentive. Two Trips to Gorilla Land and the Cataracts of the Congo Volume 1 Almost all the nitrogen of the soil is locked up in the humus and cannot in that condition be used by the roots of plants. The First Book of Farming The earthworms present in the soil feed on the humus. Free from School Von Babo found the temperature of sandy ground thus raised from 68 degrees to 80 degrees F., that of soil rich in humus from 68 degrees to 88 degrees. The Earth as Modified by Human Action The land can be improved by plowing deeply and turning in stable manure or green alfalfa or any other vegetable matter which may decay, rendering the soil rich in humus and more friable. One Thousand Questions in California Agriculture Answered But in another direction still does the farmer depend directly upon bacteria The most important factor in the fertility of the soil is the part of it called humus. The Story of Germ Life These are often not available to plants, but can to a certain extent be made available through tillage and by adding humus to the soil. The First Book of Farming In addition, the acid substances produced in the decay of the plants tend to liberate the insoluble plant-foods and the organic matter is finally changed into humus. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall No, it is not so poor in mineral plant food on the sloping areas, but even there it is extremely poor in humus and nitrogen. The Story of the Soil; from the Basis of Absolute Science and Real Life, Even where this is not done, the alfalfa will add to the humus of the soil by its own wastes both from root and stem. One Thousand Questions in California Agriculture Answered This humus is very complex, and never alike in different soils It contains nitrogen compounds in abundance, together with sulphates, phosphates, sugar, and many other substances. The Story of Germ Life The formation of this gas means a loss of humus. The First Book of Farming On farms where corn is the chief crop, perhaps more importance needs to be given to the supply of organic matter and humus than on wheat farms. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall Thus the more we cultivate, the more we hasten the nitrification, oxidation, or destruction of the organic matter or humus of the soil. The Story of the Soil; from the Basis of Absolute Science and Real Life, It would be worth more on a heavy soil, because the danger of drying out would be less and the surety of reduction to humus greater. One Thousand Questions in California Agriculture Answered Something is taken from the humus each year, and unless this be replaced the soil ceases to be able to support life. The Story of Germ Life There is, however, nothing better nor so good for this purpose as dry earth containing a large percentage of humus. The First Book of Farming At the end of the process of decay humus is formed, which is not only a storehouse of plant-food, but effective in maintaining a good physical condition of the soil. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall In addition to this is the initial difference in humus content. The Story of the Soil; from the Basis of Absolute Science and Real Life, Stable manure alone will restore the humus and overcome the rebellious behavior of the soil. One Thousand Questions in California Agriculture Answered We well know that marine plants cannot derive a supply of humus for their nourishment through their roots. Familiar Letters on Chemistry By growing any of the class of crops called Legumes we may add to the soil not only humus but also nitrogen. The First Book of Farming The _humus _content forms another characteristic difference between arid and humid soils. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall This means that our Illinois prairie soil contains from five to ten times as much humus, or organic matter, as your best upland soil. The Story of the Soil; from the Basis of Absolute Science and Real Life, This increases the humus which the soil needs and imparts all the desirable characters and qualities which humus carries. One Thousand Questions in California Agriculture Answered Hence results the effects of humus, and all decaying organic substances, upon vegetation. Familiar Letters on Chemistry The benefits derived from green crop manuring then are as follows: We add to the soil organic matter or humus which is so helpful in bringing about the conditions necessary for root growth. The First Book of Farming The prevailing forces in all countries of deficient rainfall therefore tend to yield soils low in humus. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall When these organic materials are decomposed and disintegrated to such an extent that their structure is completely destroyed, the resulting mass of partially decayed black organic matter is called humus. The Story of the Soil; from the Basis of Absolute Science and Real Life, Do you consider straw good to plow under for humus, and which kind, wheat, oat, or barley straw, is best? One Thousand Questions in California Agriculture Answered The action of humus, then, as we have explained it above, is chiefly of value in gaining time. Familiar Letters on Chemistry Soils that are poor in humus are generally in need of nitrogen. The First Book of Farming It will be observed from the table, as previously stated, that more humus is found in humid than in arid soils, though the difference is not so large as might be expected. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall The nitrogen of the soil is one of the constituents of this humus or other organic matter. The Story of the Soil; from the Basis of Absolute Science and Real Life, Still, it yields humus and, therefore, is valuable for winter growing as ordinary weeds, grasses, grains, etc., are. One Thousand Questions in California Agriculture Answered In agriculture, this must ever be taken into account and in this respect humus is of importance in favouring the growth of vegetables, cabbages, &c. Familiar Letters on Chemistry During the cultivation of cotton, the organic matter or humus of the soil decays in greater quantities than are added by the stalks and leaves of the crop. The First Book of Farming Water passing through well-cultivated soils containing much humus leaches out very much more material than pure water could do. Dry-Farming : a System of Agriculture for Countries under a Low Rainfall This peaty soil is extremely rich in humus and nitrogen, well supplied with phosphorus and other elements, except potassium; but in this element it is extremely deficient. The Story of the Soil; from the Basis of Absolute Science and Real Life, I expect to plow five inches deep, and calculate that the barley straw and weeds will contribute to the supply of humus, which is always deficient in most of our soils. One Thousand Questions in California Agriculture Answered The higher the humus level gets, the more rapidly organic matter tends to decay. Gardening Without Irrigation: or without much, anyway Therefore, cotton is a humus wasting crop, and the continuous cultivation of this crop tends to exhaust the supply of organic matter in the soil. The First Book of Farming Generally speaking, a sandy, porous soil is best for peaches, but they may be raised on clay lands if provided with plenty of humus. Three Acres and Liberty Of course most of this great supply of humus is very old. The Story of the Soil; from the Basis of Absolute Science and Real Life, There is not much difference in the plant food required by the two crops you mention, but both evidently need a freshened soil and an increase of humus. One Thousand Questions in California Agriculture Answered There are also new synthetic, long-lasting soil amendments that hold and release even more moisture than humus. Gardening Without Irrigation: or without much, anyway Continuous cotton culture, by wasting humus, injures texture and therefore injures soil ventilation, causing too much ventilation in the lighter soils and too little in heavier soils. The First Book of Farming The rye was turned under green in the spring to furnish humus, the greatest and only vital need of this particular spot of virgin soil. Three Acres and Liberty And in either case, using chemical fertilizers or so-called organic fertilizers, to maximize nutrition the humus content of the soil must be maintained. How and When to Be Your Own Doctor But grape pomace, after going through fermentation and in the process of decay, makes humus in addition to giving potash and other desirable substances to the soil. One Thousand Questions in California Agriculture Answered Humus can improve many aspects of soil but will not reduce a garden's overall need for irrigation, because it is simply not practical to maintain sufficient humus deeply enough. Gardening Without Irrigation: or without much, anyway The breaking down of the humus and building of the nitrogen into other substances is the work of another set of bacteria or germs called nitrifying germs. The First Book of Farming The ground must be rich loam and plenty of humus, well drained, with a southern exposure. Three Acres and Liberty Have other garden books confused you with vague meanings for words like "stabilized humus?" Organic Gardener's Composting There is believed to be what is called "a burning out of humus," by long exposure of the soil to the intense heat of our interior districts. One Thousand Questions in California Agriculture Answered A massive humus amendment would increase that to 3 1/2 inches in the top foot or two, relatively not as much benefit as in sandy soil. Gardening Without Irrigation: or without much, anyway The sand, clay and humus of the soil are made up of a great variety of substances. The First Book of Farming Soil usually contains more or less dark, carbonaceous, decaying organic matter, called humus, and is then often termed the humus layer. The Elements of Geology But the word "humus" is often misunderstood, along with the words "compost," and "organic matter." Organic Gardener's Composting It is probable that the reduction of humus is due more to the lack of effort to maintain the supply than to the actual destruction of it by culture methods. One Thousand Questions in California Agriculture Answered But vegetable gardening makes humus levels decline rapidly. Gardening Without Irrigation: or without much, anyway But the nitrogen of the soil is very largely found in the humus with the roots cannot use. The First Book of Farming The mingling of humus and the subsoil is brought about by several means. The Elements of Geology Gardeners often use the terms organic matter, compost, and humus as interchangeable identities. Organic Gardener's Composting Straw, by its decay in the soil, produces humus and, therefore acts in the same way just as does the decay of other forms of vegetation. One Thousand Questions in California Agriculture Answered Mould or humus, being acted on by moisture and air, evolves carbonic acid, which is dissolved by rain. The Student's Elements of Geology The application of manures and fertilizers, especially with reference to maintaining a supply of humus and plant food. The First Book of Farming On the preglacial hillsides the humus layer must have been comparatively thin, while the broad glacial plains have gathered deep black soils, rich in carbon and nitrogen taken from the atmosphere. The Elements of Geology Living in this very top layer of fluffy, crumbly, moist soil mixed with leaf material and humus, are the animals that begin the process of humification. Organic Gardener's Composting The Formosa Oolong, with its natural flowery fragrance is a product of a peculiar soil, said to be a clay topped with rich humus. Tea Leaves Moreover, in the Southern States it is well known today that the soil is exhausted much more rapidly than farther north because it contains less humus. The Red Man's Continent: a chronicle of aboriginal America Therefore, any of the farm practices that tend to increase or diminish the amount of humus in the soil are to be seriously considered because of the effect on the water content of the soil. The First Book of Farming Any fresh excavation of cellar or cistern, or cut for road or railway, will show the characteristics of the humus layer. The Elements of Geology Although scientists have been intently studying humus for a century or more, they still do not know its chemical formula. Organic Gardener's Composting They kept the water within the country, preventing all effects of droughts, stimulating the growth of vegetation which by its decay, throughout the centuries, was steadily adding vegetable mold or humus to the sandy soil. The Quaker Colonies, a chronicle of the proprietors of the Delaware I form humus out of this, "I sow peas, beans and cabbages;" plants find their nourishment in the humus, and "I find my nourishment in the plants." The Ancient Regime Hence any method or system of cropping which does not occasionally return to the soil a new supply of humus tends to weaken the powers of the soil toward water. The First Book of Farming One day, carried off by a hurricane from neighboring shores, some seed fell onto these limestone beds, mixing with decomposed particles of fish and marine plants to form vegetable humus. Twenty Thousand Leagues Under the Sea Whatever its varied chemistry, all humus is brown or black, has a fine, crumbly texture, is very light-weight when dry, and smells like fresh earth. Organic Gardener's Composting Leaves during their decay generate an abundance of various kinds of acids, which have been grouped together under the term of humus acids. The formation of vegetable mould through the action of worms, with observations on their habits Our familiar English word ‘humility’ comes down to us from the Latin root humus, which means the earth or the ground. Bunyan Characters (3rd Series) Farm manures add to the soil large amounts of organic matter or humus. The First Book of Farming Of course, this land up here on the hill needs humus. Hiram the Young Farmer Once organic matter has become humus it resists further decomposition. Organic Gardener's Composting Some may have been placed there by the old builders instead of mortar; but we should remember that worms line their burrows with black humus. The formation of vegetable mould through the action of worms, with observations on their habits This prevents the growing of cover crops, and the sensitive soil, naked, a mere surface dust-mulch, has its humus burned out of it by the sun. The Jacket (Star-Rover) The main object of turning these crops under is to furnish the soil with humus. The First Book of Farming Cotton growing wastes soil humus and therefore injures soil texture by making the lighter soils more loose and open, and the heavier soils more dense and compact. The First Book of Farming When humus does get broken down by soil microbes it stops being organic matter and changes back to simple inorganic substances. Organic Gardener's Composting Mr. A. A. Julien has lately collected all the extant information about the acids generated in humus, which, according to some chemists, amount to more than a dozen different kinds. The formation of vegetable mould through the action of worms, with observations on their habits By wasting humus cotton growing injures soil texture and so weakens the water holding and water pumping power of light soils and weakens the water absorbing power of heavy soils. The First Book of Farming Besides adding humus and nitrogen to the soil the legumes, being mostly deep-rooted plants, are able to take from the subsoil food which is out of reach of other plants. The First Book of Farming To follow our crop on Field 1 through the three years we will have, first, cotton drawing large amounts of plant food from the soil and diminishing the humus of the soil. The First Book of Farming Most Americans would be repelled by many of the substances that decompose into humus. Organic Gardener's Composting This earth forms the dark coloured, rich humus which almost everywhere covers the surface of the land with a fairly well- defined layer or mantle. The formation of vegetable mould through the action of worms, with observations on their habits The humus and, therefore, texture will be taken care of; ventilation, soil temperature and plant food will be controlled to advantage. The First Book of Farming They do not add new nitrogen to the soil though they furnish humus and prepare food for the weaker feeders which may follow them. The First Book of Farming But compost that seems ready to work into soil may not have quite yet become humus. Organic Gardener's Composting But, fastidious as we tend to be, most would not be offended to barehandedly cradle a scoop of humus, raise it to the nose, and take an enjoyable sniff. Organic Gardener's Composting A compost pile is actually a fast-track method of changing crude organic materials into something resembling soil, called humus. Organic Gardener's Composting Probably without realizing it, many non-gardeners have already scuffed up that thin layer of nearly pure humus forming naturally on the forest floor where leaves and needles contact the soil. Organic Gardener's Composting Lime tends to hasten the decay of humus. The First Book of Farming There seems to be something built into the most primary nature of humans that likes humus. Organic Gardener's Composting Only a small amount of humus is left, located close to the soil's surface or carried to the depths by burrowing earthworms. Organic Gardener's Composting In nature, the formation of humus is a slow and constant process that does not occur in a single step. Organic Gardener's Composting Composting artificially accelerates the decomposition of crude organic matter and its recombination into humus. Organic Gardener's Composting Decaying organic matter or humus is one of the most important ingredients of our soils. The First Book of Farming Like clay, humus attracts plant nutrients like a magnet so they aren't so easily washed away by rain or irrigation. Organic Gardener's Composting Most important, humus is the last stage in the decomposition of organic matter. Organic Gardener's Composting |
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