Question

How can crop variety improvement methods come to the rescue farmers facing repeated crop failures

Answer 1

because of using of fertilisers and pesticides crop is grown fastly and get harvested within less time. If a farmer has to grow some crop within a gap of year when he uses these modern methods he can grow them fastly and get more profit. Also modern methods need not require many labours. work can be done mostly by machines. so in this way modern methods rescue farmers.

Answer 2

bcoz mixed cropping helps maintain soil fertility
due to which crop are grown healthier