Determination of sorghum, sudan grass and sorghumxsudan grass hybrid varieties as the main and second crop in the Yozgat province

This research was conducted to determine forage yield and qualities of sorghum, sudan grass and sorghumxsudan grass varieties sown as main and second crop and harvested two different stages in Çekerek-Yozgat condition in 2013 growing season. As plant material 5 sorghum, 1sudan grass, 5 sorghumxsudan grass and 2 corn varieties were used. The experiment was arranged in split plot design with three replications. In this study, the average plant height, leaf ratio, hay yield, crude protein ratio, crude protein yield, ADF and NDF ratio was ranged from 136.8 to 177.3 cm, 24.1 to 39.0%, 609.5 to 1183.0 kg/ha , 8.30 to 0.98% , 57.9 to 129.7 kg/ha , 34.1to 40.1 % and 62.7 to 77.1% in main crop and, 125.6 to 166.3 cm, 23.9 to 30.9%, 661.3 to 1102.0 kg/ha , 11.10 to 13:54%, 55.1 to 144.1 kg/ha, 27.6 to 33.0% and 60.0 - 68.2% in the second crop, respectively. In this study P, K, Ca and Mg content of variaties were found sufficient in both two sowing time and harvest stages At the end of the one year study, Arifiye, Shemal variety of corn, Sugar Graze II variety of sorgumxsudan grass as the main crop, and Jumbo variety of sorgumxsudan grass as the second crop were superior considering hay and crude protein yield in the Yozgat ecological conditions with irrigation.