A STUDY OF COMBINE HARVESTER PERFORMANCE FOR TWO TYPES OF WHEAT ON THE LOSSES QUANTITY PERCENTAGE
Mesopotamia Journal of Agriculture,
2012, Volume 40, Issue 0, Pages 1-8
A field experiment was conducted under sprinkler irrigation system at AL-Eatha location Ninaveh governorate. Three factors were selected for this study in determine the yield losses in wheat crop , 1st factor two types of wheat (durum & vulgare ) , 2nd three concave to threshing cylinder adjustment rear font (14-7,26-8,18-9 ) mm and three threshing cylinder speeds (750, 850 ,950 ) rpm . The experiment was set out as factorial with in split plot design; the most important results could be concluded as follows: The vulgare wheat significant increased with total losses for harvester but with less performance efficiency as compared with durum triticum . The 1st distance (14-7) mm gave a best result in decreasing losses percentage comparing with 0ther treatment. The thresher speed (750) rpm achieved best result in reducing losses % , the best relationship was obtained between durum wheat and distance (14-7) mm in which it was gave the lower losses percentage compare with all other treatment, there for the relationship was given less significant losses between durum wheat and thresher speed (750) rpm as compared with other treatment, while the best relationship gave between the distance (14-7) mm and thresher speed (850) rpm in decreasing losses percentage and high for performance efficiency and The interaction between three factors was significant in which it was gave the best relationship between distance (18-9) mm and (850) rpm with the durum wheat in determining the losses for harvester. Where as the distance (16-8) mm with the same thresher speed (850) rpm had the best relationship with vulgure wheat in reducing the losses in the yield for harvester with high performance efficiency compare with other treatments. For this research it was estimated the material loss in which it was recorded (14400) ton quantity losses in the planted wheat field under Ninaveh governorate in which the losses up to 7200000 Dollars.
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