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a) Podzols
In cold wet regions leaching helps to produce a grey soil, which is known as a podzol.
b) Chernorzems (Black Soils)
These are probably the richest soils in the world. They form under a natural vegetation of grass in the temperate latitudes and are rich in humus. This is because there is little leaching. Most of the world's wheat is grown on these soils.
c) Temperate Brown Soils
These soils are typical of the areas with a natural vegetation of deciduous forest. The soils are rich in humus, though since much of the forest has now been removed for agriculture, manures have been applied to the soils to maintain the organic content.
d) Temperate Desert Soils
The soils of arid temperate regions have not been leached. They are therefore rich in plant foods, and if irrigated, they are often very fertile. The soils are grey to brown in colour and they occur chiefly in Russia and in western USA.
francis1897 answered the question on October 11, 2022 at 08:22
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