Effect of the zinc nutrition on yield, nutrient content and uptake of direct seeded rice (Oryza sativa L.)

The investigation on “Response of direct seeded rice (Oryza sativa L.) to zinc nutrition in sub-montane zone of Maharashtra comprise of filed experiment which was carried out at Agronomy Farm in Survey No.359 and Plot No.22C at Rajarshee Chhatrapati Shahu Maharaj College of Agriculture, Kolhapur (M.S.), India during the kharif 2021. is situated on an elevation of 545.59 meters above the mean sea level on 16⁰41’30” North latitude and 74⁰ 14’00” East longitude and agro-climatically comes under the Sub-Montane Zone of Maharashtra under NARP, Kolhapur. The minimum temperature varied from 15.1 °C to 18.6°C, while maximum temperature was in the range of 26°C to 32.3°C, respectively. The relative humidity ranged between 75 to 91 per cent and 58 to 88 per cent during morning and evening respectively. The total rainfall received during experimentation period was 1304.6 mm during the experimentation from 23rd to 48th meteorological weeks. The maximum evaporation was recorded 4.6 mm day-1 and lowest being 1.9 mm day-1 in 23rd and 37th meteorological weeks, respectively. The layout of the experimentation was randomized block design with three replications and eleven treatments. On the basis of findings, it is concluded that the treatment T₁₁: RDF (100:50:50 kg NPK kg ha^-1 + Vermicompost @ 2.5 t ha^-1) + Soil application of ZnSO₄ @ 20 kg ha^-1+ Foliar application of 0.2 % EDTA Zn best result on yield studies, Nutrient (NPK & Zn) Content (%) in Grains and Straw of DSR and Uptake of Nutrients by Rice Plant (kg ha^-1). The minimum yield studies, Nutrient (NPK & Zn) Content (%) in Grains and Straw of DSR and Uptake of Nutrients by Rice Plant (kg ha^-1) was recorded under the treatment T₁ absolute control.