The active fraction of soil organic carbon largely accounts for which of the benefits of adding organic matter to soils?

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28-07-2022
Biology

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The active fraction of soil organic carbon largely accounts for which of the benefits of adding organic matter to soils?

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sonalideval056 sonalideval056 · Answer 1 · 2022-08-05T14:24:49+02:00

Water-holding capacity, nutrient mineralization, biological activity, and water and air infiltration rates are the active fraction of soil organic carbon.

By enhancing the physical, chemical, and biological processes in the soil, organic matter contributes significantly to crop productivity and soil health. A soil's structure, water-holding capacity, nutrient mineralization, biological activity, and rates of air and water infiltration all benefit from higher amounts of organic matter.

Increased tilth or soil structure is a result of higher soil organic carbon, which increases physical stability. This lowers the risk of erosion and nutrient leaching while increasing soil aeration (the amount of oxygen in the soil) and water drainage and retention. Although it only makes up 10 to 20 percent of the total organic matter in the soil, active organic matter is an essential component because it promotes microbial activity and releases nutrients into the soil.

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