"Humus" Essays and Research Papers

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washed away. Soil erosion is a major conservation problem in many parts of the world. Humus It is formed when roots, plants, and the dead bodies of small animals decay. The decay is caused by the action of microscopic living beings called bacteria and fungi. The amount of humus in soil affects the soil's texture and its ability to hold moisture and to supply necessary food. A good mixture of humus generally increases the size and quality of a Topsoil is the surface layer of soil. It is...

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Soil Types

Podzol is derived from the Russian words pod = under and zola = ash. Characteristics of Podzol soils - Deep organic layer comprising L (litter), F (fermenting organic matter) and H (humus) forest, less under moorland - An ash-grey, structure less, silica rich E or elluvial horizon, generally grey in colour - Humus (Bh) and/or iron/aluminum (Bs) enriched illuvial horizons, generally strong brown colours - Podzols are generally infertile and are physically limiting soils for productive use. -...

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turn trash to treasure

within farming are for the German-speaking world Rudolf Steiner, founder of a farming method called biodynamics, and Annie Francé-Harrar, who was appointed on behalf of the government in Mexico and supported the country 1950–1958 to set up a large humus organization in the fight against erosion and soil degradation. In the English-speaking world it was Sir Albert Howard who worked extensively in India on sustainable practices and Lady Eve Balfour who was a huge proponent of composting 1.0...

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Characteristics of Brown Earth Soils

dark colour of the Brown Earth soils. Humification occurs when the organic matter on the surface of the soil is broken down and decomposed to form a substance called humus. The leaves of deciduous trees fall and decay in Autumn forming a layer of dark humus. This humus is washed into the soil by rainfall. The presence of this layer of humus makes Brown Earth soils very fertile The Brown Earth soils have a uniform colour throughout and have no distinct horizons. The Cool Temperate climate is warm enough...

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pile was done in every 3 months for smooth decomposition. At the simplest level, the process of composting simply requires making a heap of wetted organic matter (leaves, "green" food waste, dung etc.) and waiting for the materials to break down into humus after a period of weeks or months. Modern, methodical composting is a multi-step, closely monitored process with measured inputs of water, air, and carbon- and nitrogen-rich materials. The decomposition process is aided by shredding the plant matter...

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process of composting using various worms, usually red wigglers, white worms, and other earthworms to create a heterogeneous mixture of decomposing vegetable or food waste, bedding materials, and vermicast. Vermicast, also called worm castings, worm humus or worm manure, is the end-product of the breakdown of organic matter by an earthworm.[1] These castings have been shown to contain reduced levels of contaminants and a higher saturation of nutrients than do organic materials before vermicomposting...

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Factors of Soil Formation

agricultural orient the distribution and density of population have conformed to the persisting patterns of soil fertility and productivity. Soil is basically broken-down rock materials and consists of decomposed rock debris and decayed organic matter(humus) which have been produced by weathering. According to Arthur Holmes From a geological point of view soil may be defined as the surface layer of the mantle of rock-waste in which the physical and chemical processes of weathering co-operate in intimate...

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Soil Diversity

heat source and for faster soil extraction. It is used to easily extract and assess soil dwelling arthropods and is said to be 90% efficient. Berlese funnel enables separation of the active stages of soil invertebrates from a sample of moist soil, humus, compost, or leaf litter. It uses heat to establish humidity gradient that will force the organisms to move downward to escape desiccation and will eventually fall into the collection cup of alcohol, formalin, or water. The objectives of this...

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Cassava Crop

soil can be left idle for several years allowing it to rebuild naturally or (2) Organic matter together with microbes and nutrients can be applied from an external source. In the latter case, the microbes metabolize the organic matter turning it into humus. This process replenishes and maintains long term soil fertility by providing optimal conditions for soil biological activity. Fertile soil has been self perpetuating for millions of years without man's help. It will continue to do so if their practice...

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Types of Soil

Others have shallow rooting zones and poor drainage due to subsoil cementation. Well-drained loamy types can be very productive for crops if lime and fertilizer are used. The E horizon, which is usually 4-8 cm thick, is low in Fe and Al oxides and humus. It is formed under moist, cool and acidic conditions, especially where the parent material, such as granite or sandstone, is rich in quartz. It is found under a layer of organic material in the process of decomposition, which is usually 5-10 cm thick...

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