Studies on the Improvemant of some Characters Soil

1- Effect of amendments application on soil chemical properties: ¿ A great reduction in soil salinity values were recorded after the application of soil amendments being 54.3% under (G+S+FYM+d) treatment after wheat compared to the control. 2- Effect of amendments application on soil fertility (available NPK): ¿ In general, application of soil amendments enhanced soil fertility i.e. available N, P and K, particularly the treatments including organic matter (FYM). This increase was significantly observed after maize and slightly decreased after wheat. 3- Effect of amendments application on soil physical properties: ¿ All used amendments had a favorable effect to decrease soil bulk density especially that contains organic matter (FYM) and sand, and consequences and increase in the total porosity was obtained. Bulk density values were decreased by 6.5% under (G+S+d) and (G+FYM+d) after maize, and then sharply decreased after wheat by 25.5% under (G+S+FYM+d) as compared with the control treatment.