RT - Journal Article T1 - Effect of Drum Speed and Moisture of Crop on Threshing Losses and Waste in Rice Common Varieties JF - JCPP YR - 2008 JO - JCPP VO - 12 IS - 44 UR - http://jcpp.iut.ac.ir/article-1-881-en.html SP - 223 EP - 231 K1 - Drum speed K1 - Threshing K1 - Losses K1 - Waste K1 - Rice. AB - A considerable portion of threshing losses and waste of rice takes place in threshing stage. One of the effective factors in threshing losses and waste of threshing units, threshers and harvesting machines, is the drum speed. In this research, effects of three factors including drum speed (five levels), crop moisture content (two levels) and rice common varieties (four varieties) on threshing losses and waste were studied. The thresher T25 was used for the investigation. It has wire loop type tooth. Dependent factors included unthreshed grains percentage (threshing losses) and damaged grains percentage. The obtained data was analyzed by split–split plot test based on Complete Randomized Blocks Design. The mean values were compared using Duncan’s Multiple Range Test. The tests results revealed that significant effect of variety type and drum linear speed on threshing losses (P LA eng UL http://jcpp.iut.ac.ir/article-1-881-en.html M3 ER -