تأثير نوع المعدة في تكاليف تشغيل الجرار TD-80)‎New Holland)‎

الملخص EN

A study was conducted on a farm at the college of Agriculture – university of Baghdad during 2012 in Silty clay loam Soil.

New Holland tractor with the following equipment ( Disc plow, stubble – mulch plow, chisel plow, rotary harrow, spring spike tooth Harrow, Disc harrow, disc ridger, ditcher, land plane) was used as a machinery unit.

studied treatments were laid out using Split – spilt with a randomized complete block design with three replicates .

The experiment consist of three factors, the first was tillage equipment: disc plow, stubble – mulch plow and chisel plow which represented main plots.

Second factor was harrowing equipment: rotary harrow, spring spike tooth harrow and disc harrow which represented subplots.

third factor was special equipment: disc ridger , ditcher and land plane which represented sub – sub plots.

Tractor operation cost (Fixed , variable , Management and total ) was determined in this experiment.

Results obtained indicated that lower Tractor operation costs (Fixed, variable , management and total ) was recorded with chisel plow ( 3746.1 , 24742.3 , 2851.2 , 31365.8 ) ID / ha and with the rotary harrow (3764.7 , 24836.3 , 2856.4 , 31461.9) ID / ha and lower costs as well as with the land plane (2244.7, 14765.1, 1702.1, 18730.3) ID / ha Mean while Tractor indicated higher operation costs (Fixed, variable, management and total ) with disc plow (3910.6, 25799.0, 2970.6, 32684.7) ID/ha and with spring spike tooth harrow (3910.7, 25799.7, 2970.6 , 32682.2)ID/ha as well as with ditcher (4852.0, 32012.6, 3685.8, 40552.5) ID/ ha It can be concluded that Tractor recorded lower operation costs per Area with chisel plow, rotary Harrow and Land plane comparing with the other equipment from the same type.