Design and Manufacture of Chisel Plow Shares and Their Effect on Some Field Performance Indicators

The field experiment was carried out in one of the agricultural fields in Nineveh Governorate for the agricultural season (2019) in the soil texture was a silty loam to study the performance of locally manufactured chisel plow shares at two levels of soil moisture and depths of tillage, the research included studying soil moisture at two levels (13-15%) and (17-19%) and two depths of tillage are (12-14) cm and (15-17) cm and three types of shares are (conventional share, spearhead share and severed share) and there effect on some mechanical characteristics, including (drawbar power, percentage of slippage, fuel consumption) and volume of soil disturbed. The experiment was carried out according to the design of the randomized complete block design (RCBD) under) split-split block design)      with three replication. The results of the statistical analysis showed the outperformed of the moisture content (13-15%) in obtaining the least drawbar power, the least slippage rate, fuel consumption and the highest soil disturbed volume, and outperformed the depth (12-14) cm in obtaining the least drawbar power, the least slippage rate and the least fuel consumption. While the depth outperformed  (15-17) cm in obtaining the highest soil disturbed volume, and the severed share outperformed in obtaining the least drawbar power, the least slippage rate and the least fuel consumption, while the spearhead share outperformed in obtaining the highest soil disturbed volume, and achieved interaction The moisture content (13-15%) and depth (12-14) cm have the least drawbar power, slippage and fuel consumption, while achieving interaction between moisture content (13-15%) and depth (15-17) cm are the highest average soil disturbed volume, and the interaction between moisture content (13-15%), depth (12-14) cm and severed share has the least drawbar power and the least slippage and fuel consumption And achieved the moisture content (13-15%) and depth (15-17) cm with a spearhead share above the soil disturbed volume.