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The results of a field experiment conducted at OUAT, Bhubaneswar on basmati rice varieties under system of rice intensification (SRI) showed that the application of organic manure (FYM 15.0 t ha-1) produced high grain yield (4415 kg ha-1), biomass yield (10946 kg ha-1) and NPK removal comparable to those of INM (50% RDF+7.5 ton FYM ha-1), but significantly greater than those of inorganic fertilization (RDF). Organic manuring (OM) and INM recorded higher gross return but RDF paid higher net return. OM also showed greater available NPK contents and NPK balance in soil than those of INM and RDF. The lowest available NPK contents and NPK balance were recorded RDF treated plots. Cultivar Pusa Basmati-1 performed significantly better than Geetanjali variety. Crop planted at close spacing (20×20 cm2) increased yield and NPK removal over those of wide spacing (25×25 cm2); but had no effect on available NPK contents and reverse effect on NPK balance in soil. Crop productivity, nutrient removal, nutrient content and nutrient balance in soil did not vary much with 10 and 15-day old seedling. The results suggest growing Pusa Basmati-1 at close spacing (20×20 cm2) with 10 to 15-day old single seedlings with organic manuring or INM practice for higher yield and better nutrient balance in soil. [ABSTRACT FROM AUTHOR]

The results of a field experiment conducted during the kharif season of 2007 and 2008 at OUAT, Bhubaneswar on basmati rice varieties under system of rice intensification (SRI) showed that application of organic manure (FYM 15.0 t ha-1) improved growth attributes like plant height, tillering, LAI and CGR of basmati rice varieties, increased panicle production and filled grains panicle-1, produced high grain (4.42 t ha-1 ) and straw (6.57 t ha-1 ) yields and fetched the high gross return comparable to those of INM (50% RDF+7.5 t FYM ha-1), but significantly greater than those of inorganic fertilization (RDF). However, use of RDF (60-30-30 kg N-P2O5-K2O ha-1) was more remunerative in terms of net returns and returns per rupee invested than organic manuring or INM practice due to higher cost of organic manures. The basmati rice variety Pusa Basmati-1 performed better than Geetanjali. Similarly, crop planted at close spacing (20×20 cm2) showed improved growth and increased yield and profit over those of wide spacing (25×25 cm2); but growth, yield and economics of basmati rice did not vary much between the crops planted with 10 and 15-day old seedlings. The results suggest to grow Pusa Basmati-1 at 20×20 cm2 spacing with 10 or 15-day old single seedlings under organic manuring or INM practice for better growth, higher yield and greater profit. [ABSTRACT FROM AUTHOR]