Author/Authors :
awaad, m. s. agric. res. center - soils, water environment res. inst., Egypt , farag, f. a. agric. res. center - soils, water environment res. inst., Egypt , ismail, a. o. a. agric. res. center - soils, water environment res. inst., Egypt , bayoumi, m. a. agric. res. center - soils, water environment res. inst., Egypt
