| The threshing section on combine harvester or thresher machine affects grain and stalk separation performance. The present study is conducted with view to optimize important operational and crop parameters influencing the threshing of sorghum. In this research, the effects of cylinder speed with four levels (13, 17, 21 and 25 m s-1), concave clearance (5, 10 and 15 mm) and feed rate (420, 500 and 590 kg h-1) were investigated on un-separated seed percentage, damaged seed percentage and germination. Result of ANOVA showed that cylinder speed had a significant effect on unseparated seed percentage and damaged seed percentage (P |
