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The effects of irrigation water high in soluble salts on the establishment of three species of maple trees in a Southwestern landscape were determined. Thirty Drummond red maple, Caddo sugar maple and bigtooth maple trees were irrigated during a 15-month period with either municipal water (pH 7.9, EC=952–1197 mg/l) or rainwater (pH 6.0, EC = 8.4 mg/l) after planting in containers of sandy clay loam soil. Trees of all species irrigated with rainwater had greater height and caliper increases, and better visual appearances than did those watered with municipal water. The Caddo and bigtooth maples were visually superior to the Drummond red maples. Frequency of irrigation had no effect on any measured plant responses, and no differences in leaf areas due to irrigation source or frequency were found.

Growth and Visual Responses of Three Southwestern Acer Taxa to High-Salt Irrigation Water