Answer :

Organic matter forms humus. It is essential for crop production because it makes the soil fertile. Organic matter has the following advantages;

(i) It improves soil structure by forming soil crumbs.


(ii) It increases water holding capacity of sandy soils.


(iii) It improves aeration of clayey soils.


(iv) During its decomposition, it liberates minerals (inorganic molecules) which enrich the soil.


(v) Biochemicals present in decaying organic matter improve growth of crop plants.


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