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Response of transplanted rice oryza sativa cultivar jaya to different plant populations under limited supply of nitrogen



Response of transplanted rice oryza sativa cultivar jaya to different plant populations under limited supply of nitrogen



Indian Journal of Agricultural Sciences 52(6): 372-377



A field experiment was conducted during rainy seasons of 1975 and 1976 to assess the advantage of increased plant population in 'Jaya' rice (O. sativa Linn.) under limited supply of N fertilizer. In unfertilized crop, the grain yield was almost constant regardless of plant density, but in partially fertilized one it increased from 6.1 to 7.5 tonnes/ha in 1975 and from 6.3 to 8.4 tonnes/ha in 1976 with the increase in plant density from 12.5 to 200 hills/m2. When the full amount of fertilizer was applied, the yield difference between low and high plant populations narrowed down, indicating that N fertilization compensated for low plant populations. The study contradicts the common notion that plant population compensates for inherent low soil fertility or no N.

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Accession: 006327338

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