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Prof. Dr. M.M. Farahat, Agric. & Biol. Res. Div., NRC. ABSTRACT: An experiment was undertaken in the open field at the nursery of Hort. Res. Inst., ARC, Giza, Egypt during 2013 and 2014 seasons to explore the effect of different water qualities (fresh, mixed (50% fresh + 50% sanitary water) and primary treated sanitary water), various concentrations of jasmine oil (0.0, 0.03 and 0.05%) applied as foliar spray, 3 times with 15 days interval and their interactions on growth and chemical composition of one-year-old seedlings of Australian pine (Casuarina equisetifolia L.) and River Red Gum (Eucalyptus rostrata Schlecht.) cultivated in 16-cm-diameter black polyethylene bags filled with about 3.5 kg of clayey soil. The obtained results have shown that all vegetative and root growth parameters of the used two trees were significantly increased in response to the different sole treatments and interactions used in this study. A similar trend was also obtained concerning the leaf content of chlorophyll a, b and carotenoids, as well as total soluble sugars, N, P and K in the stem, leaves and roots, as they were markedly increased by the various employed treatments. On the other hand, content of Pb and Cd in the stem, leaves and roots was increased as the level of sanitary water increased in irrigation water, but they were gradually decreased with increasing jasmine oil concentration in spray solution. In general, content of these two metals in various plant organs was greatly less than their critical levels that induce toxicity. So, no morpho-or physio-logical disorders appear on the plants of the two studied tree species. However, the prevalence in all previous measurements was for the combining between irrigation with mixed water and spraying with 0.05% jasmine oil solution, as this combination gave the best rate of vegetative and root growth and the highest content of pigments, total soluble sugars, N, P and K in plant tissues accompanied with the least content of Pb and Cd elements. Hence, it could be said that primary treated sanitary water can be used after mixing with fresh water at equal parts in irrigation Casuarina equisetifolia L. and Eucalyptus rostrata Schlecht. plants proved spraying them with 0.05% jasmine oil solution, 3 times with 15 days interval to achieve the best growth and highest quality.

REDUCING THE HARMFUL EFFECTS OF SANITARY WATER ON GROWTH AND QUALITY OF SOME ECONOMIC TREES USING JASMINE OIL