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Science Magazine Science Daily Agriculture Online Astronomy.com Mutual UFO Network The Biology Project Botany World of Chemistry Physics Ornithology| Definition Of: | ||||||
HUMUS
: The well-decomposed, relatively stable part of the organic matter found in aerobic soils. A complex aggregate of amorphous substances, formed during the microbial decomposition or alteration of plant and animal residues and products synthesized by soil organisms; principal constituents are derivatives of lignins, proteins and cellulose; humus has a high capacity for base exchange (CEC), combining with inorganic soil constituents, and for water absorption; finished compost may be designated by the general term humus.
The well-decomposed, relatively stable part of the organic matter found in aerobic soils. A complex aggregate of amorphous substances, formed during the microbial decomposition or alteration of plant and animal residues and products synthesized by soil organisms; principal constituents are derivatives of lignins, proteins and cellulose; humus has a high capacity for base exchange (CEC), combining with inorganic soil constituents, and for water absorption; finished compost may be designated by the general term humus.
The brown or blackish substance, sometimes called vegetable mould, which is the final result of the decay of organic matter in the soil.
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Science Dictionary INDEX:List of Terms: Terms beginning with "A", Page 1 |
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 A: Page 1 of 22. |
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