Yuvraj Singh Maurya, Raj Bahadur, Ravindra Kumar, Kadambari Tiwari, Ankita Singh, Vimal Yadav and Aman Singh
Abstract
The present investigation entitled âEffect of zinc sulphate and salicylic acid on morpho-physiological, biochemical and yield attributes traits of rice (Oryza sativa L.)â was conducted during the Kharif season of 2024 -25 at the Student Instructional Farm (SIF) of Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya-224229 (U.P.). The experiment used Randomized Block Design with three replications, seven treatments, and one rice variety NDR2064. Treatments comprised of T1 control (Foliar spray of distilled water @30 & 60 DAT, T2 ZnSO4 @50 ppm foliar spray at 30 and 60 DAT, T3 ZnSO4@100 ppm foliar spray at 30 and 60 DAT, T4 ZnSO4@150 ppm foliar spray at and 60 DAT, T5 SA@ 50 ppm foliar spray at 30 and 60 DAT. T6 SA@100 ppm foliar spray at 30 and 60 DAT, T7 SA@150 ppm foliar spray at 30 and 60 DAT. Growth, biochemical parameters and yield attributes were recorded at 50, 80 DAT and physiological maturity. It is concluded from the result that growth, biochemical and yield parameters was observed to be most significant with T7 SA@150 ppm foliar spray at 30 and 60 DAT compared to other treatments. T7 treatment improved Plant height (cm), Tillernumber plant-1, Total chlorophyll content, NR activity and various yield attributes, Total dry biomass(g)m-2, Total dry biomass(g)m-2, Harvesting index (%), Grain yield (qha-1). Thus, T7 SA@150 ppm foliar spray at 30 and 60 DAT was found most effective in enhancing growth, biochemical and yield parameters in this study.