@Article{, title={Effect of Moldboard Plow Types on Soil Physical Properties Under Different Soil Moisture Content and Tractor Speed}, author={Aqeel J. Nassir عقيل جوني ناصر}, journal={Basrah Journal of Agricultural Sciences مجلة البصرة للعلوم الزراعية}, volume={31}, number={1}, pages={48-58}, year={2018}, abstract={An experiment was conducted in fields of Agriculture college, Universityof Basrah. The experiment was designed with split-spilt plots in Complete RandomizedBlocks Design Treatments included three types of moldboard plows: helical, semidigger and general –purpose, three soil moisture content levels (10.23,16.47 and24.68%), and four tractor speed of 0.41, 0.56, 0.86 and 1.21 m sec -1 . The soil physicalproperties were determined after plowing soil by using three types of moldboard plow.The results showed that there was significant effect of moldboard plow types, soilmoisture content and tractor speed on soil physical properties including bulk density,soil porosity, soil penetration resistance and pulverization ratio. Results also indicatedthat the effect of interaction among plow types, soil moisture content and tractor speedwas significantly on soil penetration resistance and pulverization ratios while it had notsignificantly effect on bulk density, soil porosity. In general, soil physical properties,had been improved when using high tractor speed and moderate soil moisture contentwhereas optimal operation was obtained when using general-purpose plow type andhigh tractor speed of 1.12 m sec -1 and soil moisture content of 16.47% where thiscombination gives low bulk density (0.96Mg m-3), high soil porosity (63.90%) high soilpulverization ratio (74%) and low soil penetration resistance (623.47 kN m-2)

} }