Abstract A laboratory experiment was carried out at the College of Agriculture, University Anbar, located 43°20‘09.7“E longitude, 33°25‘36.7“N latitude for period from 1/10/2021 to 1/10/2022, study effect date residues, organic acids, and wetting / drying cycles on some physical properties gypsiferous soil. The soil selected site Fallujah palm station that longitude 43º51'. 05. 36 E. 33º17'. 46...

Abstract Laboratory experiments were carried out to study the effect of biochar addition and gypsum content on some hydrophysical properties soil quality index. Soil samples with (G2) 100, (G3) 150, (G4) 200, (G5) 250 (G6) 350 g kg -1 , prepared by mixing a surface sample for depth 0-10 cm (G1) 60 subsurface from 60-100 (G7) 443 at research station College Agriculture / Tikrit University. was i...

1. Soil Formation is a Global Natural Process 2. Factors of Soil Formation 3. Stages of Soil Formation 4. Processes of Soil Formation 5. Genesis of Soils under Different Ecologic Conditions 5.1. Genesis of Soils under Conditions of Cryogenesis 5.2. Genesis of Soils of Forest Landscapes in a Zone of Moderate Climate 5.3. Genesis of Soils in Landscapes of Steppes and Prairies 5.4. Genesis of Soil...

An intensive investigation was conducted to study the distribution of trace metals in surface soils of Hong Kong and to assess the soil environmental quality. From results of cluster analysis, and comparisons among soil types and areas, it is clearly shown that increases in trace metal concentrations in the soils were generally extensive and obvious in urban and orchard soils, less so in vegeta...