Arrange these statements in correct sequence of preparation of green manure.
Question:

Arrange these statements in correct sequence of preparation of green manure.

(a) Green plants are decomposed in soil.

(b) Green plants are cultivated for preparing manure or crop plant parts are used.

(c) Plants are ploughed and mixed in soil.

(d) After decomposition, it becomes green manure.

Solution:

$(b)>(c)>(a)>(d)$