The practice in which green plants like sunn hemp, guar, etc., are grown and then mulched by ploughing them into soil, results in the formation of __(i)__ which enriches the soil with __(ii)__
Select the correct option for (i) and (ii).

Answer

D

Explanation

Green manure is a kind of manure which is prepared in the field itself to enrich the soil in nitrogen and phosphorus. Green plants (e.g., sun hemp, cow pea, sweet clover, barseem, cluster beam etc.) are mulched by ploughing and then left in the field to decompose by the activity of natural decomposers such as bacteria and fungi for decay.