Black soil has the maximum content and is extremely fertile.
bangar soils are calcareous in nature and hav a loe organic content(humus). but it is very productive and fertile soil.
podzolic do not have much fertile humus. this causes a bright brown colour.
It is substratum because it has little or no moisture and little or no humus.
humus is a source of nutrients which makes soil fertile.
bedrock and humus
worms. they digest the humus and excrete it out making it more fertile
Humus can hold more water
black
The Fertile soil contains lots of microorganisms which decompose the complex dead bodies of animals and plants into simpler substance called Humus.
Compost, top dressing, humus, manure, potash, mulch...
Humus content of the soil. What think the heat scientists about black surfaces and heat absorption? Black surfaces absorb heat faster and contain it longer. Mostly, humus is black or dark in color. Soil with much of the humus content tends to absorb more heat and gets heated faster than soil c9ontaining less humus.
organic matter and humus are related because they are darker in a way. and many leaves that fall from forest trees every autumn help form humus. the decaying leaves and plentiful rainfall form thick fertile soil.