Response of Yield, Yield Components and Quality of Cotton to Different Application Rates of Boron in the Arid Lands of Iran

This study was carried out to study the response of yield, yield components and quality of cotton (Gossypium hirsutum) to different application rates of boron in the arid lands of Iran. Boron (B) was applied as foliar at rates 0, 500 and 1000 g ha . Statistical results of study indicated that foliar application of B 1 significantly (P 0.05) increased boll number, boll weight, seed cotton yield and lint yield. In addition, B concentration of leaf blade was affected by B application rate and increased significantly. Results also demonstrated that the highest seed cotton yield was recorded in case of 1000 g ha foliar application of B and 1 this foliar application rate resulted in 25% increased seed cotton yield. Results of study also indicated that different application rates of B significantly affected some studied fiber properties. On the whole, application of 1000 g ha B (two time foliar B application) resulted in the highest boll number, boll weight, seed cotton 1