Effects of different nitrogen fertilizer doses on hay yield and some quality treats of sudan grass and sorghumxsudan grass hybrid varieties

This research was conducted to determine the effects of six nitrogen doses (0, 8, 12, 16, 20 kg/da) on the hay yield and some quality characteristics of sudangrass and sorghum x sudan grass hybrid grown in Yozgat ecological conditions in 2013-2014. As plant material 1sudan grass and 2 sorghumxsudan grass 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 were ranged from 200.9 – 205.5 cm, 36.02 – 39.90 %, 1.39 – 2.55 t/da, 8.17 – 11.90 %, 113.5 – 304.9 kg/ha, 37.51 – 40.31 % and 62.59 – 67.34 % in the 2013-2014 respectively. In this study P, K, Ca and Mg content of varieties were found sufficient in both two years. At the end of the two years study, in terms of hay and crude protein yield, Aneto and Bovital varieties which are sorgumxsudan grass hybrids superior with 8 kg/da N doses grass under irrigated conditions in Yozgat.