IGNOU AEC 1 2018 - How does the oxidation state of metal ion affect the colour of the soi

Question

How does the oxidation state of metal ion affect the colour of the soil? Explain the effect of oxidized and reduced forms of elements on crops.

06 Mar 2018

Answer :

Word Count : 373

Soil color is mainly produced by the minerals present and by the organic matter content. Yellow or red soil indicates the presence of oxidized ferric iron oxides. Dark brown or black color in soil indicates that the soil has a high organic matter content. Wet soil will appear darker than dry soil. However, the presence of water also affects soil color by affecting the oxidation rate. Soil that has a high water content will have less air in the soil, specifically less

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