Q.2
Match items in column A with those in column B.
A B (i) Kharif crops (a) Food for cattle
(ii) Rabi crops (b) Urea and super phosphate
(iii) Chemical fertilisers (c) Animal excreta, cow dung, urine and plant waste
(iv) Organic manure (d) Wheat, gram, pea
(e) Paddy and maize

A B
(i) Kharif crops ----------------- (e) Paddy and maize
(ii) Rabi crops ------------------ (d) Wheat, gram, pea
(iii) Chemical fertilizers ----------(b) Urea and super phosphate
(iv) Organic manure--------------(c) Animal excreta, cow dung, urine and plant waste

EXPLANATION:-
Kharif crops are the monsoon crops whose seeds are sown around the end of May to early June and is harvested between October to November.

Rabi crops are the winter crops whose seeds are sown around mid of November and is harvested between April to May.

Chemical fertilizers are the single most contributor to the increase in world agricultural productivity. But chemical fertilizers affect adversely towards the soil fertility and also towards the microbes present in the soil.

Manure is organic in nature. Though it has a slow effect on the plants but it doesn't affect any environment negatively. It helps in soil enrichment as well as it makes the yield more fruitful.