Influence of machine-crop parameters on the threshability of sorghum

Saeidirad, M.H. and Esaghzade, M. and Arabhossein, A. and Zarifneshat, S. (2013) Influence of machine-crop parameters on the threshability of sorghum. Agricultural Engineering International: CIGR Journal, 15 (3). pp. 55-59.

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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<0.01). Concave clearance created a significant effect on damaged seed percentage. Though the feed rate did not have significant effect on all adjectives, the unseparated seed percentage increased with increasing of feed rate. The thresher efficiency and damaged seed increased with increase of cylinder speed. The increase of Concave clearance from 5 to 10 mm caused that unseparated seed weight percentage increased from 0.69% to 0.78%, and damaged seed rate decreased from 13.01% to 11.01%. Generally, the best performance for sorghum threshing was given at the 21 m s-1 cylinder speed, 10 mm Concave clearance and 590 kg h-1 feed rate

Item Type: Article
Uncontrolled Keywords: sorghum, threshing quality, cylinder thresher
Author Affiliation: Assistant professor, Khorasan Agricultural and Natural Resources Research Center, Mashhad, Iran;
Subjects: Agricultural Engineering
Postharvest Management
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 09 Feb 2014 11:33
Last Modified: 09 Feb 2014 11:33

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