podzolic do not have much fertile humus. this causes a bright brown colour.
Some clays and particularly organic soils (like humus) hold nutrients and water much better than sandy soils do. the soil that contains the most nutrients is the loam.
25%-sand 255-clay 25%-gravel 25%-humus
by earthworms in it
Cause there is so much humus (hyoo-mus) in it
It is much more fertile because of the amount of water it has. the minerals from the soil also cause fertile soil.
Anywhere from "none" to "lots and lots". Calcareous soil is soil high in calcium (lime) content. it has nothing to do with the percentage of humus, which is decayed organic material.
Bhangar (1) Bhangar belongs the category of old alluvial soil. (2) Bhangar contains kankar, nodules and calcium carbonate. It is not much fertile as khadar. Khadar (1) Khadar belongs to the category of new alluvial soil. (2) It is very fertile.
The Fertile Crescent is named because of its location between the fertile riverbeds of the Tigris and Euphrates Rivers.Ê Today much of the crescent lies in Iraq.
Zinnias survive in damp but well drained soil, grow in humus rich soil in full sun
It has abundant water.
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