دراسة بعض الصفات الفيزيائية لتربة رسوبية في محافظة الانبار للتنبوء بمعدل القطر الموزون

Abstract

This study was conducted at Al-Hamuzia sector, Al-Anbar Governarate to find out the effect of some soil components on its aggregate stability. Twelve pedons were excavated in selected sites in the region which representing different land uses (orchids, vegetable, cereals and bare) with three replicates for every land use. Results showed that the all selected soils under subgroup Typic Torrifluvent and series DW75. Significant decrease in mean weight diameter the (MWD) with depth for all studied soils was showed with higher variation between surface horizons and land use, the same trend was recorded about soil carbon content while no significant variation was showed due to clay separate and calcium carbonate content with a significant increase in soil calcium carbonate content at subsurface horizons. a positive significant correlation between MWD and organic carbon , clay separate was showed while a negative correlation between MWD and soil calcium carbonate content was recorded. The multiple regression showed the possibility of prediction to soil MWD from the relationship of soil organic carbon content, clay separate and soil content of calcium carbonate with high significant correlation coefficient R=0.858.