a) In what ways do farmers try to improve the quality of (i) their soil, (ii) their crop plants?   

b) What other steps do farmers take to maximise the yield from their crops?

A) (i) Soil quality is better by adding organic manure or compost and artificial fertilisers,  by adding lime (to reduce acidity), by ploughing (to improve aeration and drainage), by draining (to reduce water logging).

(ii) Farmers try to select crop plants which have a high yield and which are resistant to diseases.

(B) Farmers irrigate their crops and try to eliminate weeds and pests.