Question

why do we need to improve the crop varieties

Answer 1

Crop variety improvement is necessary :
1. to increase the yield of crop production
2. to produce disease resistant crops
3. to increase the nutrient quality of the crops 
4. India’s population is increasing alarmingly, so to meet the ever-increasing demand for food, we need to improve crop varities for food production.

Answer 2

heya folk!!!!

crop varieties improve the primary step to improve food crop production. ... The list of desirable traits includes high yields, disease resistance, quality product and response to fertilisers. We can raise different strains of food crops with desirable traits as well as scientifically

if you like please mark as brainlest