الفهرس 
Combine harvester
Visible grain damage measurementOnly 14 pages are availabe for public view
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Abstract
Field experiments were carried out at the research farm of Rice mechanization Center, Meet El-Deeba, Kafr El-Sheikh Governorate during harvesting soybean crop in the agricultural season of 2003, the main objectives of the present study may be summarized as follows: 1-To study soybean grain losses due to the different functional parts of combine harvester (Yanmar-CA760) and Turkish threshing machine. 2-To study soybean grain damage due to the screw drum in combine harvester (Yanmar-CA760). 3-To evaluate the performance of combine harvester (Yanmar-CA760) and to determine the optimum operating conditions. 4-To evaluate the Turkish threshing machine and to determine the optimum perating conditions. 5-To choose the most efficient and economic system for harvesting and threshing soybean crop. the variables under study were as follows: 1- When using combine harvester (Yanmar-CA760): a) Four different levels of forward speeds 1.4, 1.9, 2.6 and 3.1 km/h, b) Four different levels of cylinder speeds 9.87 (290), 10.89 (320), 12.59 (370), 13.95(410)m/s(r.p.m). c) Four different levels of grain and straw moisture contents as follows: 22.41, 18.50, 14.96, 12.14 and 40.52, 31.34, 20.50. 14.82%, respectively. 2” When using Turkish threshing machine: a) Four different levels of feed rates 0.2, 0,3, 0.4 and 0.5 kg/s. b) Four different levels of cylinder speeds 11.99 (327), 14.84 (405), 17.96 (490), 20.89 (570) m/s (r.p.m). c) The same above mentioned four different levels of grain and straw moisture contents.