Summary
This field trial on silt loam soils in Uttar Pradesh compared three rice establishment methods (transplanting, System of Rice Intensification, and direct seeding) combined with five nitrogen levels (0–160 kg N/ha). The System of Rice Intensification (SRI) produced substantially higher grain yields and economic returns than conventional transplanting or direct seeding, with maximum performance at 160 kg N/ha, achieving a benefit-cost ratio of 1:2.1 and net returns of Rs. 72,329.7 per hectare.
Regional applicability
Direct applicability to UK rice production is limited, as commercial rice cultivation is minimal in the UK climate. However, the study's findings on nitrogen use efficiency and establishment method interactions may inform research on other UK cereals (wheat, barley) or horticultural crops under similar temperate conditions.
Key measures
Panicles per m², panicle length, grains per panicle, test weight, straw yield, grain yield, harvest index, nitrogen uptake in grain and straw, gross return (Rs.), net return (Rs.), benefit-cost ratio
Outcomes reported
The study measured grain yield, panicle density, grain composition, nitrogen uptake, straw yield, and farm economic returns (gross return, net return, benefit-cost ratio) across three rice establishment methods and five nitrogen fertiliser levels.
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