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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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