Yield and quality of aromatic rice (Oryza sativa L.) varieties under nutrient management in organic environment of coastal Odisha

Organic aromatic rice can be raised with recommended dose of nitrogen (RDN) through farmyard manure (FYM), vermicompost (VC) and neem cake (NC). An experiment was conducted at Bhubaneswar, Odisha, India during kharif 2022 comprising four aromatic rice cultivars, ‘Geetanjali’, ‘Poornabhoga’, ‘CR Dhan 910’ and ‘Nua Chinikamini’ and four manuring sources, FYM (100% RDN), FYM (40% RDN)+ VC (30% RDN)+ NC (30% RDN), FYM (50% RDN)+ VC (25% RDN)+ NC (25% RDN) and FYM (60% RDN)+ VC (20% RDN)+ NC (20% RDN) in split plot design with three replications. The FYM, VC and NC had nitrogen content of 0.46, 3.0 and 4.4%, respectively. Among varieties, ‘Poornabhoga’ was the best for growth and yield attributes and produced grain yield of 2.95 t/ha.Among manuring sources, application of FYM (40% RDN)+ VC (30% RDN)+ NC (30% RDN) recorded the maximum growth , yield attributes and grain yield of 3.05 t/ha. Among treatment combinations, rice variety ‘Poornabhoga’ with application of 60kg N/ha as 24kg N/ha (FYM) + 18kg N/ha (VC)+ 18kg N/ha (NC) proved to be the best and produced the maximum yield of 3.59 t/ha.Among rice varieties, ‘Geetanjali’ had the maximum milling percent (71.67%), head rice recovery (63.75%), kernel length: breadth ratio (3.72), whereas ‘Nua Chinikamini’ had the maximum hulling % (77.50%), kernel elongation ratio (1.84) and volume expansion ratio (3.66). For higher yield and quality of aromatic rice, the rice cultivar ‘Poornabhoga’ should be grown with application of 24+18+18 kg N/ha as FYM+VC+NC, respectively.