Evaluation of some technical indicators for new Holland TC 5050 harvester on harvesting losses of rice crop

الملخص EN

This study was conducted in one field of Al-Shamia district in Diwaniyah governorate, Iraq in 2017, for studyingsome technical indicators of New Holland TC 5050 harvester on harvesting losses of rice crop,by using New Holland TC 5050 harvester in various cutting height and threshing cylinder speed.

This study was studied two factors: included three cutting heights 10,15 and 25 cm.

and three threshing cylinder speeds 450,500 and 550 rpm.

The properties which were studied including: percentage of cutting losses, percentage of threshing losses, percentage of separating losses and percentage of cleaning losses.

A factorial experiment was carried out in a Randomized Block Design (R.C.B.D) with four replicates.

The results showed the following: increasing cutting height from 10 to 15 and 25 cm caused a decrease in the percentage of cuttinglosses, the percentage of threshing losses, the percentage of separating losses and the percentage of cleaning losses.

Threshing cylinder speed 450 rpmobtained significant superiority up onthreshing cylinder, speed550rpm achieved lesspercentage of cutting losses and the percentage of threshing losses, while threshing cylinder speed 550 rpmachieved lowerpercentage of separating losses and percentage of cleaning losses.

Increasing threshing cylinder speed from 450 to 500 and 550 rpm caused an increasing in the percentage of cutting losses and percentage of threshing losses, and decreasing in the percentage of separating losses and percentage of cleaning losses.