Answer:
High Yielding Variety (HYV) seeds are seeds, which produce large quantities of crops especially wheat and rice. The use of these seeds requires regular supply of water and optimum use of fertilizer and pesticide in correct proportions. Hence, the farmers require reliable irrigation facilities as well as the financial resources to purchase fertilizer and pesticide to benefit from HYV seeds.
Due to this reason, the use of HYV seeds was restricted to the more affluent states such as Punjab, Andhra Pradesh and Tamil Nadu and mainly benefitted wheal production in the first phase of the Green Revolution during mid 1960s up to mid 1970s, In the second phase of the Green Revolution (mid 1970s to mid 1980s), the HYV technology spread to a large number of states and benefited more variety of crops. The HYV seeds enabled India to achieve self-sufficiency in food grains.
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