Q33 of 69 Page 15

What is the requirement of high yielding varieties?

The high yielding variety plants require more water and fertilizers. They require frequent weeding and continuous use of pesticides and fungicides.

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31 A farmer grows grain crops between two cereal crops. Which agricultural practice is he following? 32 Name the major group of activities for improving crop yields 34 What do you mean by varietal improvement? 35 Name the scientist who introduced Mexican variety of wheat in India.