بعض الخواص الفيزيائية للتربة تحت تأثير محاريث مختلفة

Abstract EN

This study was conducted at Tel - Adas village / Ninavah province during agricultural season 2012.

Three different types of plows have been used (Moldboard , Vertical disc and Chisel) under three levels of forward speeds 3.628 , 5.039 and 6.745 Km/ h with two tillage depths 10 – 12 , 15 – 17 cm to study their effect on some soil physical properties.

A complete randomized block design has been used with split split plot method.

The vertical disc plow recorded lowest significant values for the penetration resistance of the surface layer at the end of the season and at the bottom of the tillage layer, while it recorded heighest significant value of the moisture content at the bottom of the tillage layer.

The chisel plow recorded heighest significant values of the moisture content for both surface and subsurface layer in the middle of the season and at the end of the season, also the seem significant was found for the wet mean weight diameter at the middle.

The third speed recorded heighest significant values of the moisture content at the surface layer in the middle season and at the subsurface layer in the end of the season, while it recoded lowest significant values for the penetration resistance for both surface and subsurface layer, at both middle season and at the end of the season and also it recorded lowest values at the bottom of the tillage layer.

The first speed recorded heighest significant values of the wet mean weight diameter at both middle and end season.

The second speeds showed significant value of the moisture content at the bottom of the tillage layer.

The second tillage depth recorded lowest significant values of the penetration resistance at the surface layer in the end of the season and at the subsurface in middle season, while it recorded heighest significant value of the moisture content at both surface and subsurface layers in the middle season and also at the bottom of the tillage layer.

The first tillage depth gave heighest significant value of the moisture content at the surface layer in the end of the season, while it recorded lowest significant value of the penetration resistance at the bottom of the tillage layer.