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The effects of varying Al, Mn, and Ca fertilization levels on `Tifblue' and `Brightwell' rabbiteye blueberry (Vaccinium ashei Reade) plant growth, chlorosis symptoms, and leaf elemental content were studied in a sand culture experiment. Increased Al fertilization linearly decreased Ca, Mg, and Mn leaf concentrations and plant vigor. Calcium fertilization did not affect plant growth or leaf concentration of the two cultivars. Increased Mn fertilization increased Al and Mn leaf concentrations and resulted in more chlorosis symptoms. Plants fertilized with the highest rates of Al and Mn had the least amount of growth.
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HortScience