Question

define crop variety improvement

Answer 1

Crop variety improvement is the primary step to improve food crop production. Development of crop variety with desirable traits is the goal of this method. The list of desirable traits includes high yields, disease resistance, quality product and response to fertilizers. We can raise different strains of food crops with desirable traits naturally as well as scientifically. 

Answer 2

here's your answer........
to improve the fertility of soil many fertilizers and pesticides, rodenticide.and manures also.

by cross breeding, a new variety can be made to have the desired characteristics from both parents. this is known as hybridization. hybridization is a technique used for developing new varieties of crops by cross breeding two different varieties.

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