Response of Kharif Transplanted Rice (Oryza sativa L.) under Different Nitrogen Management Practices

Abstract

A field experiment was conducted at the Siksha “O” Anusandhan University Bhubaneswar during kharif season 2022 in a well-drained sandy loam soil to study the effect of nutrient management practices on growth, yield, nutrient uptake and economics of rice under different organic and inorganic nutrient management practices. The experiment was laid out in a factorial randomized block design with ten set of treatments viz. T1: 75%RDN, T2: 100% RDN, T3: 125%RDN ,T4: 50% N of T1 as urea+50% N through FYM,T5:50%N of T1 as urea+50% N through NOC, T6: 50%N of T2 as urea+50% N through FYM, T7:50%N of T2 as urea+50% N through NOC, T8: 50%N of T3 as urea+50% N through FYM, T9:50%N of T3 as urea+50% N through NOC, and T10: Farmer’s Practice (80:40:40 kg NPK/ha+ FYM 5 t/ha) and replicated thrice. Results revealed that maximum plant height, number of tillers per m2 and dry matter production/m2 was recorded with treatment T6 (50% N of T2 as urea+50% N through FYM) at harvest. The highest grain yield along with high yield attributing characters like panicle/m2 filled grains/panicle and test weight was recorded with application of T6 (50% N of T2 as urea +50% N through FYM) than all other treatments. Nitrogen, phosphorus and potassium uptake was recorded highest under the treatment T6 (Application of 50% N of T2 as urea + 50 % N through FYM.