Q. No. 1:
Compare the use of manure and
fertilizers in maintaining soil fertility.
Ans:
Manures increase soil fertility by
enriching the soil with organic matter and nutrients as it is prepared by the
decomposition of animal excreta and plant wastes. while fertilizers are inorganic
compounds whose excessive use is harmful to the symbiotic micro-organisms
living in soil.
So they are preferred only for
short period of time.
