SOWING DATE EFFECT ON YIELD OF DIFFERENT WHEAT VARIETIES

This study was conducted at Adaptive Research Farm, Vehari, Pakistan during the year 2003-06. Two newly evolved wheat varieties SH-2002 and AS-2002 alognwith a standard Uqab-2000 were subjected to different sowing times starting from November 1 to December 30 at ten days interval. The pooled data revealed that significantly higher grain yield (3826 kg/ha) was obtained from variety AS-2002 sown on November 10 followed by same variety sown on November 20 (3731 kg/ha). Each successive delay in sowing beyond November 20 progressively decreased the grain yield significantly. Yield was reduced by 27.24 percent in sowing of December 30 as compared to November 10. Wheat variety AS-2002 proved better than SH-2002 and Uqab-2000. Three years results concluded that regardless of the varieties November 10 to November 20 is the optimum sowing time for wheat under agro-ecological conditions of Vehari.