Effect of Nutrient Optimization through Organic and Inorganic Resources on Yield, Uptake, and Soil Properties in a Rice-wheat Cropping System

Abstract

A field experiment was conducted during 2017-18 to 2019-20 on a fixed layout in sodic soil at Fertilizers Research Farm, Uttaripura in the jurisdiction of C. S. Azad University of Agriculture and Technology, Kanpur using high yielding variety of rice NDR-359 and wheat PBW-343. The maximum grain, straw, and biological yield of rice were noted as 44.75, 55.93, and 99.68 q ha-1, and wheat 46.25, 56.42 and 99.97 q ha-1 with the application of 75% NPK+ two spray of 0.25% of Sagarika +25 kg/ha Sagarika granules +two spray of 2% of WSF (18:18:18), The maximum uptake of NPK in grain and straw of both rice and wheat crop with the application of 75% NPK + two sprays of 0.25% of Sagarika +25 kg/ha Sagarika granules +two spray of 2% of WSF (18:18:18) followed by75% NPK+ two spray of 0.25% of Sagarika +25 kg/ha Sagarika and minimum uptake of NPK in grain and straw with the application of 75% NPK. The basal application of Sagarika @ 25 kg ha was found superior to the foliar spray of Sagarika. The change in pH, EC, OC, available N, P, K, S, Zn, and Br ranged from 7.2 to 7.5, 0.32 to 0.34 DSM-1, 0.39 to 0.41%, 191 to 195, 15.7 to 16.8, 173.4 to 178.5, 19.4 to 19.8, 11.2 to 11.5 and 0.73 to 0.77 kg ha-1 respectively with the application of different treatments while not remarkable changes from initial values of soil properties. Application of 10 t/ha FYM was found better than other treatments during the study period.