Field experiment demonstrates enhanced grain yield and soil nutrient availability in paddy crops, indicating that nano nitrogen and zinc optimize fertilizer efficiency.
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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Sahana et al. (2023) studied this question.
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