TY - JOUR AU - N, Barnali AU - Singh, L. Nabachandra AU - Bhupenchandra, Ingudam AU - Chongtham, S.K. AU - Olivia, L.C. AU - Devi, E. Lamalakshmi AU - Sinyorita, Soibam AU - Devi, Soibam Helena AU - Chanu, Reaya AU - Wangkheimayaum, Merinda PY - 2021/11/19 Y2 - 2024/03/28 TI - Effect of differential nitrogen management practices on growth, yield and water use efficiency of rice under varying moisture regimes JF - Environment Conservation Journal JA - ECJ VL - 22 IS - 3 SE - Original Articles DO - 10.36953/ECJ.2021.22303 UR - https://journal.environcj.in/index.php/ecj/article/view/692 SP - 17-30 AB - <p><strong>Pot experiments were conducted during 2018and 2019 at the College of Agriculture, Central Agricultural University, Imphal, Manipur, India to investigate the effect of different nitrogen management practices on growth, yield and water use efficiency of rice variety “CAU R1” under varying moisture regimes. Keeping this rationale, three nitrogen management practices {60 kg N/ha (Urea), 40 kg N/ha (Urea) + 20 kg N/ha equivalent FYM, 30 kg N/ha (Urea) + 15 kg N/ha equivalent FYM + 15 kg N/ha equivalent <em>Azolla </em>and three levels of moisture regime {continuous flooding (5 cm depth), no standing water (wetting soil just after hairy cracks appear), 5 cm water depth at tillering, panicle initiation and flowering stage} were tested in a Factorial Randomized Block Design and replicated thrice. Overall, the results of investigational findings indicated that the integrated approach of nitrogen management <em>viz</em>. 50% RDN through Urea + 25% RDN through FYM + 25% through <em>Azolla </em>with maintenance of 5 cm water depth at tillering, panicle initiation and flowering stage markedly improved growth and yield attributes and subsequently yield and water use efficiency of rice as compared to conventional method of nitrogen supplementation through fertilizer. Multivariate principal component analysis and stepwise regression showed that number of tillers/hill is the most important yield attributing characters implicated in augmenting the rice yield significantly.</strong></p> ER -