Evaluation of wheat (Triticum aestivum) genotypes for higher yield and enhanced nitrogen use efficiency in Muzaffarnagar

Abstract

Extensive research has been conducted on various nitrogen(N) management approachest of ulfil the growing needs of cereals while enhancing the efficiency of agricultural resource eutilization .Never the less, the intensive agricultural model continues to prioritize the achievement of high crop yields and improving nitrogen use efficiency(NUE)as opposing targets. The primary aim of this study wasto investigates whether a corresponding increase in N application is necessary to achieve higher crop yields. The study evaluated the effects of 3N treatments (N0,N75,andN150) on 10 wheat (Triticum aestivum L.) genotypes during 2022–23and 2023–24 at research farm of Shri Ram College, circular Road, Muzaffarnagar.In both growing seasons, the highest grain yield (GY) of 5.3 t/ha, agronomic efficiency (AEN) of 28.7 kg grain/kg N,and partial factor productivity of applied N(PFPN) of 60.2kg grain/kgN were obtained by the HD3249 genotype, followed by HD3117. The application of N75and N150 increased grain yields by 72.3 and 142.6% ,respectively ,over N0. Significant relationships were observed between GY,PFPN and AEN at all N levels, and a decreasing trend was observed in both PFPN and AEN as the N application rate increased. The study results suggest that the adoption of genotype-specific nitrogen(N) rates could provide a mutually beneficial solution to meet the growing demand for food while improving NUE. Over all ,based on GY and AEN ,there search findings indicate that the genotypes HD3249 and HD3117 are efficient candidates for N use,with the potentiall for higher yield sand NUE in the Muzaffarnagar of India.