Question
“System of Rice Intensification” of cultivation, in which alternate wetting and drying of rice fields is practised, results in:
1. Reduced seed requirement
2. Reduced methane production
3. Reduced electricity consumption
Select the correct answer using the code given below:
Explanation
Correct answer: (d) 1, 2 and 3
Statement 1 is correct: SRI transplants single, younger seedlings at wider spacing instead of dense clumps, cutting seed requirement by 60-80%.
Statement 2 is correct: Its Alternate Wetting and Drying (AWD) technique prevents prolonged anaerobic conditions, lowering field methane emissions by 30-50%.
Statement 3 is correct: Intermittent water application also lowers irrigation water demand by 25-50%, which directly cuts electricity use for pumping.