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EFFECT OF SOME AMINO ACIDS ON THE PHYSIOLOGICAL CHARACTERISTICS OF
                       MAIZE PLANT UNDER SOIL SALT STRESS CONDITIONS IN EGYPT AND TUNISIA
              (K+), phosphorus (P), boron (B), copper (Cu), iron (Fe), manganese
              (Mn) and zinc (Zn), contents in plant samples were determined by

              Inductively Coupled Plasma Spectrometry (ICP).


                  2.2.4. Statistical analysis

                  The experimental design used in this study was a complete Ran-
              domized Design with four proline treatments (0, 15, 30 and 45 mgL-

              1) applied on four replications. Statistical analysis for the different
              determined  parameters  and  crop  production  was evaluated  using

              ANOVA as well as the least significant difference (LSD) tested at
              0.05 signifance level (Snedicor and Cochran, 1980).

              3. Results and discussion


                  3.1. Soil characteristics

                  Some soil physical and chemical properties of the studied area

              are shown in Table (1). Particle size distribution of the investigated
              surface and subsurface soils at the different depths gave a texture

              class a sandy soil with very low percentage of silt and clay. Par-
              ticle size distribution was mainly sand soils of the investigated soil

              layers which contained poor content amount of calcium carbonate
              (CaCO3).
















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