Effect of Nitrogen Sources and Stages on Yield Components of Wheat

A field trial examined the impact of nitrogen sources and application stages on yield components. The research was conducted at the Agronomy Research Farm, The University of Agriculture Peshawar, during the winter of 2022. The experiment was arranged in a Randomized Complete Block Design (RCBD) with three replications. The experiment consisted of three factors: the first factor involved Nitrogen Levels (NL) (100, 120, and 140 kg. ha^-1), the second factor pertained to application sources (S), urea and Farm Yard Manure (FYM) (urea + FYM), and the third factor addressed application stages (A) (sowing, tillering, and stem elongation). Nitrogen levels significantly affected spikes m^-2 (255.0), net grains weight spike^-1 (2.6 g), grains spike^-1 (52.2) and thousand grains weight (48.1 g), respectively. Application stages significantly affected net gain weight (2.5 g) and thousand grains weight (46.9 g). Applications sources also significantly affected grains spike^-1 (52.7). The interaction NL × S significantly affected grains spike^-1. Similarly, the interaction S × A also suggestively affected grains spike^-1. The interaction NL × A affected the thousand-grain weight significantly. The research concluded that applying integrated nitrogen sources (Urea + FYM) at a rate of 120 kg. ha^-1 at an application stage of stem elongation gives a higher yield and is recommended to the end users.