Abstract
Field experiments were conducted during rabi and kharif seasons of 2020-21 and 2021-22 at Krishi Vigyana Kendra, Gangavathi, Koppal, Karnataka, India, to study the influence of nano nitrogen and nano zinc on soil fertility and crop productivity of paddy-paddy cropping system.The experiment was laid out in split-split plot design with different levels of nitrogen in main plots, nano nitrogen sprays in sub-plots and nano zinc sprays in sub-sub plots which were replicated thrice. The results of the study indicated that application of 125 per cent RDN along with foliar spray of nitrogen @ 4000 ppm and nano Zn @ 2000 ppm has recorded significantly higher grain yield, straw yield, soil available N, P2O5, K2O, S and Zn during both rabi and kharif season and which was on par with and 100 per cent RDN along with spray of nano nitrogen @ 4000 ppm and nano Zn @ 2000 ppm. Hence for effective management of nano fertilizers in paddy, the application of 100 per cent RDN along with foliar spray of nano N @ 4000 ppm and foliar spray of nano Zn @ 2000 ppm was recommended.
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