Thesis (Ph.D.) - Ain Shams University - Faculty of Agriculture - Department of Soil Science

Greenhouse experiments were conducted to study the soil plant systems in relation to nutrients availability included two kinds of crops (mono and dicotyledon) through two successive seasons grown on different soil types. The abtained results can be summarized as follows: The highest values of corn shoots and ears were obtained for loamy soil. P, Fe and Zn applications increased the concentration and uptake of P by corn parts, while Zn level and uptake were reduced in shoots. On the other hand, Zn application at different rates increased proportionlly Zn content and uptake by both shoots and ears of corn