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Effect of phosphate fertilization on zinc nutrition of rice crop in an alluvial soil of uttar pradesh india



Effect of phosphate fertilization on zinc nutrition of rice crop in an alluvial soil of uttar pradesh india



Indian Journal of Agricultural Sciences 46(6): 269-273



An increase in the supply of P up to 200 ppm P induced a growth disorder in rice (Oryza sativa L., 'IR 49') that could be alleviated by an increase in the supply of Zn. An increase in the supply of P or Zn also decreased the concentrations of the other nutrient. Mutual antagonism was observed in their concentrations and uptake by the crop. The critical concentration of Zn or P associated with Zn deficiency could not be assessed, but deficiency occurred when the P:Zn concentration ratio was 301 in the shoot at panicle emergence, 543 in the grain and 104 in the straw at final harvest.

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Accession: 005261038

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