Nitrogen and Born Effects on Yield and Yield Components of Cotton (Gossypium hirsutum)

Field experiments were carried out to study the interactive effect of nitrogen and boron fertilizers on yield and yield components of cotton (Gossypium hirsutum). Nitrogen (N) was applied at rates of 0, 100, 200 and 300 kg ha and boron (B) was applied as foliar at rates 0, 500 and 1000 g ha . Statistical results of study 1 1 showed that N application significantly (P ≤ 0.05) enhanced boll number, boll weight, seed cotton weight of boll, seed cotton yield and lint yield. Moreover, leaf blade N concentration was affected by N application rate and increased significantly. Results of study also indicated that the maximum seed cotton yield was recorded in case of 200 kg ha N application rate and this application rate resulted in 19.6% increased seed cotton yield. 1 Statistical results also indicated that foliar application of B significantly enhanced boll number, boll weight, seed cotton yield and lint yield. In addition, leaf blade B concentration was affected by B application rate and increased significantly. Results also demonstrated that the maximum seed cotton yield was obtained in case of 1000 g ha foliar application of B and this foliar application rate resulted in 25% increased seed cotton yield. 1