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Studies on the relationship between nutrient uptake and yield of certain high yielding rice varieties


, : Studies on the relationship between nutrient uptake and yield of certain high yielding rice varieties. Madras Agricultural Journal 60(3): 173-175

In pot trials, rice Karuna (CO.33), Kanchi (CO.34) and Cauveri (CO.35) were given 0, 40, 80, 120 or 160 kg N/ha + P2O5 and K2O each at 50% of each N rate. Uptake of N, P, K, Ca and Mg was positively interrelated at flowering and harvest. Grain yield was significantly correlated with N uptake and carbohydrate production at panicle initiation and with N and K uptake and carbohydrate production at flowering.

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