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).
