تأثير نوع المحراث الحفار و عمق الحراثة و سرعتها في متطلبات الطاقة و بعض صفات الأداء الحقلي في تربة غرينيه طينية

Abstract EN

A filed experiment was conducted in silty clay soil to evaluate the effect of two Chesil plow types (traditional Chesil plow and Modified Chesil plow), two operating depths (10 and 20 cm) and three forward speeds (0.51, 0.72 and 0.99 m/sec) on draft energy, specific energy, practical productivity and soil volume distribution.

The results were showed significant superiority for modified Chesil plow in higher soil volume distribution and practical productivity, but the traditional chisel plow was indicated significant superiority in lower draft energy and lower specific energy.

The results also showed increase soil volume distribution and draft energy, and decrease specific energy and practical productivity when increasing operating depth from 10 to 20 cm.

The increase forward speed from 0.99 m/sec leaded to increase soil volume distribution and draft energy and decrease specific energy and practical productivity.

Therefor, recommended using modified Chesil plow on forward speed 0.99 m/sec in operating depth 20 cm to arrival higher soil volume distribution and higher practical productivity, while to arrival lower draft energy recommended using traditional Chesil plow on forward speed 0.51m/sec in operating depth 10 cm.

and to arrival lower specific draft energy recommended using traditional Chesil plow on 0.51 m/sec in operating depth 20 cm.