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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

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

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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