Sweet corn hybrids, weed management and plant density effects on sweet corn yield and yield components in Hormozghan, Iran

In order to determine of important agronomic characteristics of sweet corn hybrids and weed or without weed competition under different plant density at Iranian warm environment this experiment was conducted on 2006 at the HajiAbad plant research center, Hormozgan, Iran. The experiments were perform in a split split plot in contract to RCBD for 2 sweet corn (KSc.403 and Shimmer hybrids) as a main plots and weed control and non weed control on sub plots and three plant density 53,67 and 89 thousand plant per hectare as a sub sub plots with 4 replications. The results showed that the difference of 2 hybrids about seed yields, number of seed per row and number of row per ear were significant. Then, weed control could increase the seed yield near 7.8%. Maximum yield of seed corn was about 9700 kg/ha for Shimmer hybrid at 89000 plant density per hectare under full weeds control condition. Finally the Shimmer hybrid of sweet corn showed better studied characteristics in compare to KSc.403, and Shimmer could produce the highest seed yield by increase the plant density from 53000 to 89000 too, but under weed control.