Influence of integrated nutrient management using nano phosphatic fertilizer on nutrient use efficiency and yield of wheat (Triticum aestivum L.) in Vertisols

Abstract

The experiment was conducted during rabi 2019 to know the effect of integrated nutrient management using nano phosphatic fertilizer on yield, uptake by wheat, soil fertility status and nutrient use efficiency after harvest of wheat. The field trial study showed that, the highest grain yield (3546 kg ha-1) was obtained by application of Green manuring of sun hemp + 50% RD of NP through inorganic fertilizers + spraying of 0.5% of 1000 ppm nano P suspension at tillering and flowering stage of Wheat, which is an increase by 6% over Green manuring of sun hemp + 100% RDF. Phosphorus use efficiency is recorded in between 13.43 to 35.83 % under the application of RDF alone or in combination of nano P suspension.