الفهرس 
Introduction
Determination of the major cationsOnly 14 pages are availabe for public view
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Abstract
Phosphorus nutrition of Trigonella foenum graecum was investigated under a set of stress conditions including soil salinity and contamination with heavy metals (lead) and household detergents (Omo and Xtra). In the first experiment plants were grown under different levels of P either as KH2PO4 or detergents. The optimum P level (as KH2PO4 ) for shoot growth was about 0.2 mM at early stages of growth (first harvest), and increased to 0.8 mM P at the second harvest. The optimum P level for root growth was independent on age and averaged around 0.2 mM at both harvests. The internal deficiency-toxicity level for shoot growth was independent on age and was 0.05 - 0.14 mM respectively at both harvests. In roots, the deficiency P level was the same at both harvests (0.18 mM), but the toxicity level was raised from 0.25 mM at the first harvest to about 0.34 mM at the second harvest . The present results suggest a significant beneficial effect of salinity on growth of Trigonella foenum graecum with optimum salinity levels around 50-100 mM NaCl. with little reduction beyond that level. In non-salinized media plants growth was promoted by increasing P level, but in salinized plants, 3 mM P was found to be either excessive (with no further growth promotion over 0.8 mM P) in case of shoot or even toxic in case of root The data suggest that, with the increase in salinity of the medium much more proportion of the Na+ taken up was retained in root and a decreasing proportion was transported to shoot. This was particularly evident at adequate and excessive P levels. Shoot and root growth of Trigonella foenum graecum was stimulated by low levels (≤ 1 ppm) of Pb with a tendency for saturation at higher Pb levels up to 20 ppm. The effect of Pb was more evident at the low level of P, likewise the effect of P was more evident at the low level of P. The effect of treatments (varying levels of P and Pb) was comparable on shoot and root growth, leading to a more or less constant R/Sh ratio of about 0.2 at all treatment combinations. The effect of Pb was more evident at the low level of P and likewise the effect of P was more evident at the low level of Pb.