عنوان المقالة:تأثیر زاویة القرص وسرع الحراثة الأمامیة في بعض صفات التربة الفیزیاویة وأداء المحراث القرصي العمودي EFFECT OF DISK ANGLE AND PLOWING SPEEDS IN SOME PHYSICAL PROPERTIES OF SOIL AND IN THE PERFORMANCE OF VERTICAL DISK PLOW
The research was carried out at Hummaidat township 15km west of Mosul
city to investigate the effect of disk angle (35 ◌,42 ◌,and 48 ◌) of the vertical disk
plow with three plowing speeds (4.86,7.24 and 9.30)km/hr on number of masses
exceeded 10 cm/m2, bulk density, porosity, effective plowing depth, coefficient of
working width, slippage percentage, field efficiency, effective field capacity,pulling force, drawbar power and the power lost due to slippage. Results showed
that the effect of interaction between disk angle and plowing speeds was significant
in bulk density and power lost due to slippage while there were no significant
differences concerning other studied characteristics. The disk angle 42o showed
higher significance in the effective plowing depth, coefficient of working width,
bulk density and porosity .
مثنى عبد المالك نوري الجراح | Mothana Abed AlMalik Noori Al jarrah | 7185