Effect of different row spacings on the yield and quality of silage sorghum (Sorghum Bicolor (L).Moench) cultivars to be second crop grown

This research was conducted to determine effect of row spacings on some morphological and agronomic traits of some promising cultivars sorghum as second crops under tokat-kazova ecological conditions in 2011 and 2012 years. the research was designed according to a split plots in randomized block design with three replicates. cultivars were arranged in main plots, and row spacings were arranged in sub plots. three sorghum cultivars were obtained from special seed company. in this research, sorghum cultivars will be hand-planted in a plot that is 5 m long containing 5 rows and 15, 25, 35, 45, 55 cm between the rows. according to average two years, plant heights ranged from 183.9 to 224.2 cm, green forage yields ranged from 2128.2 to 4764.3 kg da-1, dry matter yields varied from 935.0 to 1924.0 kg da-1, digestible dry matter yields ranged from 611.6 to 1121.2 kg da-1, crude protein contents in dry matter from 9.45 to 10.99 %, adf contents in dry matter from 39.14 to 40.92 %, ndf contents in dry matter from 61.23 to 63.00%.