سرعة الجرار و عمق الحراثة و تقييم أداء متطلبات القدرة و كفاءة السحب لمحراث محور محليا

Abstract EN

An experiment was conducted on a field of the college of Agriculture/University of Baghdad in 2011 to study tractor speed, tillage depth and evaluation of performance power requirements and the pulling efficiency of the locally modified plow with two tractors Massey Ferguson MF 650 and New Howland TD80 as a machine unit till plow silty clay loam soil with depths 10-15 and 15-20 cm.

The advantage of the plow infrastructure offer big implement width from 85 to 150 cm for the one frame.

the advantage of plow also being cut off the roots of plants, stalks and leaves of plants above the ground the previous component of the cover so-called vegetarian coverage plow, and also used to prevent water and wind erosion and called maintenance plow.

In this study, three levels of tillage speeds included 2.458, 5.298 and 6.654 km/h and two levels of tillage depth included 10 and 15 cm.

were study in this experimentincluded: pulling force, drawbar horse power, horse power losses due to slippage and pulling efficiency.

were measured in this study under randomized complete block design with three replications were used in this study.

The results were as following: The interaction between tillage speed 2.458 km/h with depth of plowing 10-15 cm was superior in getting less pulling force 4.794 kn and less drawbar horse power 3.303 kw, and less horse power losses due to slippage 0.236 kw.The interaction between tillage speed 2.458 km/h with depth of plowing 15-20 cm was superior in getting highest pulling efficiency 71.152 % .

conclusion of the research superior using of the tractor speed of 2.458 km / h and depth of tillage 10-15 cm in getting less pulling force, drawbar horse power and horse power losses due to slippage , the interaction between tractor speed 2.458 km / h and the depth of plowing 15-20 cm superior the highest percentage of the pulling efficiency, we recommend to work at speed 2.458 km / h and the depth of tillage 10-15 cm to get less pulling force, drawbar horse power and horse power losses due to slippage.