Productivity and economics of hybrid rice as influenced by use of different sources of inorganic, organic and bio-fertilizers in Central Plain Zone of Uttar Pradesh.

摘要

Field experiments were conducted in Uttar Pradesh, India, during the 2006 and 2007 kharif seasons, to study the effect of different sources of nutrients on yield attributes, yield and economics of hybrid rice. Results showed that the combined application of inorganic, organic and biofertilizer produced more number of panicles/m2 and grain weight/panicle of hybrid rice than the application of inorganic fertilizer alone. Significantly highest grain (78.5 and 83.3 q/ha) and straw yields (89.1 and 92.6 q/ha) were recorded with the application of 100% SSNM + 5 t FYM + blue green algae + Azotobacter than 100% RDF and farmers' practice during both years. Maximum net returns of hybrid rice (Rs. 35285 and 39146/ha) was recorded with 100% SSNM + 5 t FYM + blue green algae + Azotobacter than other treatments. The use of 75% SSNM + 5 t FYM + blue green algae + Azotobacter accrued the highest benefit:cost ratio of 2.26 and 2.34, followed by 100% SSNM + 5 t FYM + blue green algae + Azotobacter of 2.20 and 2.33 during both years.