Role of Leaching requirement and tillage depth in reducing the irrigation water salinity effect and improvement some of soil properties on wheat plant growth (Triticum aestivum L.) i-Some physical properties of soil and total grain product

Field experiment was conduction in agriculture college researches station/ Basrah university on silty clay soil for planting of wheat crop(Triticum aestivum L.). The experiment was included, effect of irrigation water salinity levels(2,4 and 8)dS m-1, leaching requirement(0,10,20 and 30)% and tillage depth(0-25) and(0-50)cm. and their interaction on bulk density,total porosity and soil moisture to both depth of sample collection(0-15) and(15-30)cm. also total grain product.Result showed,irrigation water salinity 2 dS m-1 caused stitical decrease for bulk density comparision with treatments 4 and 8 dS m-1, 0,10% leaching requirement comparision with another ratio and tillage depth (0-50)cm. comparision with (0-25)cm. However, moisture content of the soil,the salinity of irrigation water 8 dS m-1 gave the highest values compared to other salinity levels and 30 % leaching requirement compared to other ratios, and the tillage depth was 0-50 cm. the total porosity of the soil and the leaching requirement 0% compared to the other ratios, and the tillage depth 0-50 cm compared to the 0-25 cm. while the salinity of irrigation water 2 dS m-1 , the leaching requirement 20% and tillage depth 0-50cm were statical increased in the total grain product.