Effect of customized fertilizer on productivity and nutrient uptake of rice (Oryza sativa)

A field experiment was conducted during rainy (kharif) season of 2011 and 2012 Raipur, Chhattisgarh, to study the effect of customized fertilizer on yield, economic efficiency and nutrient uptake in ‘Mahamaya’ rice (Oryza sativa L.). Amongst the different doses of customized fertilizer (CF) and other nutrient management practices, best result was observed under 150% dose of CF, where it recorded the highest growth and yield-attributing characters, viz. grain yield of rice (7.0 t/ha) with harvest index (HI) (46.39%) and maximum net returns ( 60,062/ha) as well as benefit: cost ratio (2.31). The uptake of NPK and Zn was also higher under this treatment. Other different doses of customized fertilizer, i.e. 50% and 75% dose of CF and recommended dose of fertilizer (RDF) failed to provide considerable yield advantage and uptake of nutrients in plant as compared to optimum level of customized fertilizer.