(2010). The Field experiment conducted in al- za’afaranea city. Whose three type of plows was choused: The moldboard plow, The chisel plow and disk plow with anter 81 to mold two type of soils: soil without plant residue and soil with wheat residue, as well as using three speeds 2.5, 2.8 and 3.9 km/hr. The objective of the experiment was to study the effect of plant residue, tillage tools and ground speed of tractor some physical properties of soil: bulk density, total porosity, penetrability, soil resistance force to cut and consistency, saturated hydraulic conductivity, water infiltration. The study was carried out in a Split-split plot with completely randomized block design in three replicates.. , 2(2), 131-150.

. "The Field experiment conducted in al- za’afaranea city. Whose three type of plows was choused: The moldboard plow, The chisel plow and disk plow with anter 81 to mold two type of soils: soil without plant residue and soil with wheat residue, as well as using three speeds 2.5, 2.8 and 3.9 km/hr. The objective of the experiment was to study the effect of plant residue, tillage tools and ground speed of tractor some physical properties of soil: bulk density, total porosity, penetrability, soil resistance force to cut and consistency, saturated hydraulic conductivity, water infiltration. The study was carried out in a Split-split plot with completely randomized block design in three replicates.". , 2, 2, 2010, 131-150.

(2010). 'The Field experiment conducted in al- za’afaranea city. Whose three type of plows was choused: The moldboard plow, The chisel plow and disk plow with anter 81 to mold two type of soils: soil without plant residue and soil with wheat residue, as well as using three speeds 2.5, 2.8 and 3.9 km/hr. The objective of the experiment was to study the effect of plant residue, tillage tools and ground speed of tractor some physical properties of soil: bulk density, total porosity, penetrability, soil resistance force to cut and consistency, saturated hydraulic conductivity, water infiltration. The study was carried out in a Split-split plot with completely randomized block design in three replicates.', , 2(2), pp. 131-150.

The Field experiment conducted in al- za’afaranea city. Whose three type of plows was choused: The moldboard plow, The chisel plow and disk plow with anter 81 to mold two type of soils: soil without plant residue and soil with wheat residue, as well as using three speeds 2.5, 2.8 and 3.9 km/hr. The objective of the experiment was to study the effect of plant residue, tillage tools and ground speed of tractor some physical properties of soil: bulk density, total porosity, penetrability, soil resistance force to cut and consistency, saturated hydraulic conductivity, water infiltration. The study was carried out in a Split-split plot with completely randomized block design in three replicates.. , 2010; 2(2): 131-150.