write a short note on green revolution? give its merits and demerits
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In the mid- and late-20th century a revolution occurred that dramatically changed the field of agriculture, and this revolution was known as the Green Revolution.
Merits : 1. Higher Yield. 2. Machines made for ploughing harvesting easy. 3. Surplus food can be sold to earn more. 4. Pests and insects controlled by pesticides and insecticides. 5. Good irrigation enhances production. Demerits : 1. Loss of fertility with use of chemicalfertilizers. 2. Use of tube wells reduced the water table. 3. Chemical fertilizers polluted ground water. 4. Kills bacteria and micro organism helpful fossil. 5. Excessive use of fertilizers makes soil alkaline and unfit for cultivation
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