"System of Rice Intensification" of cultivation, in which alternate wetting and drying of rice fields is practised, results in:1.Reduced seed requirement2.Reduced methane production3.Reduced electricity consumptionSelect the correct answer using the code given below:

1. A

   1 and 2 only

   1 and 2 only. Alternate wetting also cuts pump-hours / electricity.

2. B

   2 and 3 only

   2 and 3 only. Seed rate in SRI is also lower.

3. C

   1 and 3 only

   1 and 3 only. Methane falls when fields are not continuously flooded.

4. D

   1, 2 and 3

   All three. SRI: fewer seedlings, AWD (less CH4), less irrigation energy.

Summary. Official key is (d) all three. System of Rice Intensification uses fewer plants (lower seed), alternate wetting and drying (less methane than continuous flood), and therefore less pumping / electricity.