Abstract
This study was conducted to evaluate the performance of heavy chisel plow at the end of January during agricultural season ( 2018) In the area of Baweizah of the district of Talkif / Ninavah province which is located north east of the city of Mosul Which is far (13) Km about the city center.Soil texture was silty clay by using two levels of factory of level plowing, the first level was add the tubular rolleron the chisel plow and the second level was without the tubular rollerfrom the chisel plow . also two levels of depth plow .the first was (8-10 cm) and the second was (12-14 cm) and three levels of speed included ( 2.4, 4.3 and 7.1) km/h. to study their effect in some mechanical properties , the experience was factorial with three replication . The differences have been tested by Duncan.the important results are in the following: excelled (add the tubular roller) in the following properties (,Volume of soil disturbed,depth achieved,the appearance tillage), while the level (withput roller reducer) excelled in properties (Draft force ,specific resistance), while does not appear any moral differences in the following properties (Fuel consumption).At same time excelled the speed (2.4)km/h in the following properties (Draft force, specific resistance, Depth actual of plowing), While the speed (7.1)km/h excelled in the following properties (Fuel consumption ,volume of soil disturbed, the appearance tillage). RegisterThe interaction between the first level tillage (add the roller reducer) and the first forward speed (2.4) km/h record moral superiority in the following properties (Depth actual of plowing) while the interaction between the first level tillage and the Third forward speed (7.1) km/h record moral excelled in the properties (Volume of soil disturbed ,The appearance tillage), while the interaction between the Second level tillage (without the tubular roller) and the first forward speed (2.4)km/h moral excelled in the following properties (Draft force, specific resistance), while the interaction between the second level tillage (without the tubular roller) and the third forward speed (7.1) km/h moral excelled in the properties(Fuel consumption)
