“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
✓ Correct answer: d) 1, 2 and 3
ExplanationThe System of Rice Intensification involves cultivat- ing rice with as much organic manure as possible, starting with young seedlings planted singly at wider spacing in a square pattern; and with intermittent irrigation that keeps the soil moist but not inundated, and frequent inter cultivation with weeder that actively aerates the soil.SRI is not a standardised, fixed technological method.It is rather a set of ideas, a methodology for comprehensively managing and conserving resources by changing the way that land, seeds, wa- ter, nutrients, and human labour are used to increase productivi- ty from a small but well-tended number of seeds.Advantages of SRI Disadvantages of SRIHigher yields – Both grain and strawHigher labour costs in the initial yearsReduced durationDifficulties in acquiring the necessary skillsReduced seed requirementNot suitable when no irrigation source availableLesser chemical inputsLess water requirementReduced electricity consumptionLess chaffy grainrain weight increased without change in grain sizeHigher head rice recovery
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