Impact of Integrated Nutrient Management on Soil Properties and Kala Namak Rice Yield in Central Uttar Pradesh, India

The experiment was conducted during kharif season of 2022 and 2023 at Student’s Instructional Farm (S.I.F), C.S.A. University of Agriculture and Technology, Kanpur Nagar (U.P.). The experiment was laid out in Randomized Block Design with eleven treatments each replicated thrice. The soil physical properties i.e. bulk density, particle density and chemical properties i.e. pH, electric conductivity, organic carbon were recorded in study. The bulk density of different treatment found between 1.31 to 1.38 g cm-3 during first year and 1.31 to 1.39 g cm-3 during second year of study and particle density was found between 2.59 to 2.67 g cm-3 during first year and 2.59 to 2.66 g cm-3 during second year of study. The pH led between 8.16 to 8.03 in first year and 8.13 to 8.01 during second year, and an electrical conductivity (EC) led from 0.447 to 0.427 dSm-1 and 0.457 to 0.417 dSm-1 during first and second year of experiment. The treatment combination of 100 % RDF + 5 ton ha-1 FYM + Zn (5 kg ha-1) + BGA (10 kg ha-1) have best results in respect to soil physical and chemical properties. The highest yields of grain (28.40 q ha-1 and 29.28 q ha-1) and straw (52.50 q ha-1 and 54.12 q ha-1) were achieved in the first and second years, respectively. The treatment that resulted in the highest yields of grain and straw was 100% RDF + 5 ton ha-1 FYM + Zn (5 kg ha-1) + BGA (10 kg ha-1) making it the best treatment. The next best treatment was 75 % RDF + 5 ton ha-1 FYM + Zn (5 kg ha-1) + BGA (10 kg ha-1).