摘要 : A field experiment was carried out to investigate the effects of uniconazole and cycocle on growth, yield and concentration of macronutrients in forage of pearl millet under drought stress condition in 2007-2008 growing season in ... 展开 A field experiment was carried out to investigate the effects of uniconazole and cycocle on growth, yield and concentration of macronutrients in forage of pearl millet under drought stress condition in 2007-2008 growing season in Experimental Farm of University of Zabol. The experiment was conducted in split plot based on randomized completely block design with three replications. Main plots included of: S₁ (full irrigation), S₂ (withholding irrigation during stem elongation stage) and S₃ (withholding irrigation during ear emergence stage). Sub plots comprised of four levels of plant growth regulators foliar application: R₁ (Control), R₂ (foliar application of 300 mg L^-1 uniconazole), R₃ (foliar application of 100 mg L^-1 cycocle) and R₄ (foliar application of 300 mg L^-1 uniconazole+100 mg L^-1 cycocle). The Results indicated that the highest value of plant height, forage dry matter, grain yield, 1000-seeds weight and harvest index were obtained from S₁ treatment. Furthermore, the highest nitrogen and phosphorus content in forage was achieved from S₁ treatment. But irrigation treatment hadn't significant effect on potassium content. Among PGR treatments the highest plant height obtained from control and the lowest value achieved from uniconazole+cycocle foliar Application. 1000-seeds weight was highest in barley plants that sprayed with cycocle. In addition the highest values in the forage dry matter, grain yield and macronutrients content recorded from foliar application of uniconazole+cycocle. However, PGR foliar treatments hadn't significant influence on harvest index of pearl millet plants. 收起