We have no meanings for "call humus" in our records yet.
1 The most important of these nutrients is nitrate nitrogen, thus soil scientists may call humus decomposition "nitrification."
2 A compost pile is actually a fast-track method of changing crude organic materials into something resembling soil, called humus .
3 Soil usually contains more or less dark, carbonaceous, decaying organic matter, called humus , and is then often termed the humus layer.
4 When organic matter has undergone a certain amount of decay it is called humus , and these soils are called organic soils or humus soils.
Grammar, pronunciation and more