Physiology, Phenology and Yield Response of Rice (Oryza sativa L.) to Stand Establishment Techniques and Nutrient Management Practices in North Central Plateau Zone of Odisha

Abstract

Field experiments were conducted during 2009 and 2010 to assess the performance of wet season rice under three crop establishment techniques viz. system of rice intensification (SRI), sowing of sprouted seeds by a drum seeder (DS) and conventional transplanting (CT) under three nutrient management practices viz. RDF (80 : 40 : 40 N : P2O5 : K2O kg ha), integrated nutrient management (INM) i.e.50% RDF + 50% RDF through organic sources (based on nitrogen requirement) and organic management (OM) i.e. 100% of RDF through organic sources (based on nitrogen requirement) in split plot design with three replications. SRI registered 18.0 and 25.8% higher productivity than conventional transplanting and drum seeding respectively. Integrated nutrient management (INM) could register significantly more grain yield by 11.9 and 19.2% than RDF and organic management, respectively. SRI fetched the highest net return (Rs 43033 ha-1) and return per rupee invested (2.28) among crop establishment methods whereas the crop with INM practices being at par with RDF realized the highest net return. However, the return re-1 invested was the highest with RDF (2.45) followed by INM (2.16).