Impact of Different Nitrogen Levels on Growth, Yield and Varietal Performance of Wheat Under the Agro-climatic Condition of District Bajaur

Nitrogen is one of the important among nutrients to increase the productivity of wheat crop. This experiment was planned to find out impact of various levels of nitrogen on different wheat varieties. The research was performed at the Substation of Agricultural Research (MAs), district Bajaur during winter season 2024, using Randomized Complete Block Design (RCBD) with three replications. Different nitrogen levels (0, 40, 80,120 and 160 kg/ha) were applied on four different varieties of wheat (Khaista-17, PS-15, Wadan-17 and Pasina-17). The results indicated that nitrogen levels and varieties have significantly affected plant height (78.9 cm), tiller plant ^-1 (9.6), no. of leaves plant ^-1 (5.4), spike length (11.4cm), number of spikes plant ^-1 (7.2), number of spikelet spike ^-1 (20.4), grain spike ^-1 (62.7) and grain yield (2499.1 kgha ^-1 ) were recorded with application of nitrogen @ 160 kgha ^-1 . In case of varieties highest plant height (78.4cm), was recorded in the variety Wadan-17. Maximum spike length (12.5 cm), tiller plant ^-1 (9.9), number of leaves plant ^-1 (5.7), spike length (12.5 cm), number of spikes plant ^-1 (6.8), spikelet spike ^-1 (21.1), grain spike ^-1 (65.3) and grain yield (4465.6 kgha ^-1 ) were observed in variety Khaista-17 followed by Wadan-17. Non-significant interaction was recorded against varieties and nitrogen. It is concluded that variety Khaista-17 has obtained highest grain yield whereas nitrogen was given @ 160 kg N ha ^-1 has provided grain yield of (4465.6 kgha ^-1 ).