Humus is highly recalcitrant, and this resistance to decomposition leads to a long residence time in soil. Plant debris is less recalcitrant, resulting in a much shorter residence time in soil.
THE part played by humic manures in soil processes and in plant nutrition, both as a source of mineral elements and by improving the physical condition of the soil, is well known. The advantages ...
Soil with not much compost or humus in it will blow away in the wind very easily. Putting compost in your soil feeds the soil and makes it strong and healthy.