Question

although fertilizers provide specific nutrients,it is important to use manures also for better crop production. give reason.

differentiate between manures and fertilizers (any points).

Answer 1

1 Although fertilisers provide specific nutrients, it is important to use manures also for better crop production because It improves the texture and water holding capacity of the soil. It adds humus to soil and increases useful soil microbial flora.

2

Fertiliser	Manure
1 They are inorganic or organic salts. 2 They are artificially prepared in factories. 3 They are costly. 4 They do add any humus to the soil.	1. They are organic in nature. 2 They are produced in farms or agricultural fields by decomposition of animal and plant wastes. 3 They are cheaper. 4 As they are organic, they add humus to the soil.