Increased Yield of Rice (Oryza sativa L.) by Foliar Fertilization Through Multi-Component Fertilizers.



ABSTRACT WITHDRAWN

Foliar application of fertilizers can guarantee the availability of nutrients to rice for obtaining higher yield. Rice responds favorably to macronutrients and micronutrients and the tolerance to salinity hazards improves by decreasing the N/S ratio. In this study, results showed that nutrient concentrations for rice are Nitrogen (N) =108.0 g L-1; Phosphorous (P) =6 g L-1; Potassium (K) =81.0 g L-1; Calcium (Ca) =15.0 g L-1 and Magnesium (Mg) =6 g L-1 and for Iron (Fe), Manganese (Mn), Zinc (Zn), Cupper (Cu), Boron (B), Molybdenum (Mo) and Silicon (Si) the recommended concentrations are 600, 450, 210, 60, 90, 0.2 and 4 mg L-1, respectively. Significant increase was recorded in number of panicle m-2, thousand grain weight, biological yield and grain yield with foliar application of nutrients. Five foliar applications of nutrients resulted in maximum number of panicles m-2, grains panicle-1, thousand grains weight and biological yield. It is concluded that five foliar application of balanced amounts of fertilizers at seedling stage (two sprays), tillering (single spray) and panicle (two sprays at panicle initiation and panicle differentiation) stages helped in enhancing yield and yield components of rice. In this research, the five sprays application produced the smallest damaging effects of blast (Pyricularia oryzae) in rice.
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