Effect of Nano Nitrogen and Nano Zinc on Soil Fertility and Crop Productivity of Paddy-paddy Cropping System

Sahana *

Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

M. V. Ravi

Department of Soil Science and Agricultural Chemistry, Collage of Agriculture, Gangavathi, Karnataka, India.

K. Narayana Rao

Department of Soil Science and Agricultural Chemistry, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

J. Vishwanath

AICRP on Management of Salt Affected Soils, Agriculture Research Station, Gangavathi, Karnataka, India.

M. R. Umesh

Department of Agronomy, AICRP on Sunflower, MARS, University of Agricultural Sciences, Raichur-584104, Karnatak, India.

Mahadevaswamy

Department of Agricultural Microbiology, University of Agricultural Sciences, Raichur-584104, Karnataka, India.

*Author to whom correspondence should be addressed.


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.

Keywords: Crop productivity, foliar spray, nano nitrogen, nano zinc, soil fertility


How to Cite

Sahana, M. V. Ravi, K. Narayana Rao, J. Vishwanath, M. R. Umesh, and Mahadevaswamy. 2023. “Effect of Nano Nitrogen and Nano Zinc on Soil Fertility and Crop Productivity of Paddy-Paddy Cropping System”. International Journal of Plant & Soil Science 35 (9):99-110. https://doi.org/10.9734/ijpss/2023/v35i92910.