Abstract
Field experiment on “Influence of nano nitrogen and nano zinc fertilizers on nutrient uptake and Use efficiency in paddy under different systems of establishment”. Randomised complete block design (RCBD) College of Agriculture, Vishweshwaraiah Canal Farm, Mandya, Karnataka, during summer 2022. The study included 14 treatments with various concentrations and sources of nitrogen with nano nitrogen and nano zinc under various establishment methods, including transplanted paddy and system of rice cultivation (SRI), as well as various methods of applying nano fertilisers, such as seed treatment, root dipping, and foliar spray. The results indicated that significantly higher nitrogen uptake (94.42, 79.10 and 173.52 kg ha-1, respectively), phosphorous, potassium uptake and higher nitrogen, phosphorous and potassium use efficiency (58.76, 105.01 and 73.51 kg kg-1 nutrients applied, respectively) was obtained with the application of 75% N and two foliar sprays of nano nitrogen and nano zinc at 25 to 30 and 45 to 50 DAT under SRI method of establishment. SRI method of rice establishment and nano nutrient application will significantly increase the primary, secondary and micro nutrient uptake
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