Effect of continuous cultivation and soil texture on some soil properties

The effects of soil continuous cultivation and texture on some its properties, electrical conductivity, total porosity, calcium carbonate content penetration resistance. Six samples material for a layer 0-30 cm were collected from three different sites are Clay, Loam Loamy Sand in Basra Governorate Abi al-Khasib, Karma Zubair. Three these represented the treatment cultivation, planted with alfalfa crop (Medicago sativa) 7 consecutive years, other same uncultivated replications each sample. results showed decrease values carbonate, resistance, an increase porosity cultivated soils. lowest EC 4.1, 5.3 6.2 dS. m-1 soils textures sand, respectively, CaCO3 182.3 g. kg-1 266.7 310 Clay soils, resistance to 550 KN.m-1 clay While it was 620 KN.m-1, 714 loam loamy sand soil, compared soil. increased 43%, 48.53% 53.4%, And average weighted diameter 0.2537 mm, 0.2817 0.3640 respectively.