Yield and Yield Contributing Traits of Wheat Varieties as Affected by Nitrogen Rates

Agriculture 1 ) grain yield was observed by wheat variety Saleem-2000.The highest grain yield of the variety corresponds to higher thousand grains weight (46.98 g), spikes per meter square (263) and grains spike -1 (37.24).Variety Saleem-2000 showed the minimum number of spikes m -2 (242) and grains spike -1 (34.13).It can be concluded from results that application of 150 kg N ha -1 is optimum rate of N-fertilizer for irrigated spring wheat production in the area.Among the available spring wheat varieties, Pirsabak-2005 is relatively the best variety for grain yield in agro-ecological condition of Peshawar that may effectively contribute in food security of the growing population in the region.