Author(s):

Gobinath R, Singh RD, Datta SC and Datta SP

Abstract: In order to investigate the effect of nano source of Zn along with ZnSO₄ foliar and soil application on physiological performance of rice (Oryza sativa L.), a pot experiment was conducted in the calcareous soil of Bihar with completely randomized design with three replications during seasons of 2013-2014. In this study, different concentrations of nano ZnO and ZnSO₄ were taken @ 0.1% ZnO nano, 0.02% Nano and 0.5% ZnSO₄ as foliar spray; 1 kg Zn (ZnO NPs), 0.2 kg Zn (ZnO NPs) and 5 kg Zn (ZnSO₄) as soil application in which nano concentrations are equivalent to 1/6^th of the normal recommendations. The results shows that the soil parameters like pH, EC and organic carbon were does not altered much over control in all treated pots. Whereas soil amended ZnO nano and ZnSO₄ increased the DTPA extractable Zn and Fe content in calcareous soil. Therefore, results can be indicated that the application of nano ZnO via soil enhance the availability of DTPA extractable micronutrient content in calcareous soil.

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