Aluminum-induced Calcium Deficiency in Peach Seedlings1

in Journal of the American Society for Horticultural Science
Authors:
J. H. EdwardsSoutheastern Fruit and Tree Nut Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Byron, GA 31008

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B. D. HortonSoutheastern Fruit and Tree Nut Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Byron, GA 31008

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Abstract

Total nutrient content, uptake rates, and distribution were determined for seedlings of peach [Prunus persica (L.) Batsch] grown in nutrient solutions containing 0, 222, 666, and 2000 µm Al. Generally, total nutrient content decreased in the peach seedling organs as Al concentration increased. The responses obtained with increased Al concentration were linear with some nutrients and curvilinear with others and varied with plant organ. As Al concentration increased, the uptake rates for P, Ca, Mg, Zn, and Mn decreased but those for K and Fe increased. Aluminum did not alter the translocation of most nutrients; however, a greater percentage of the absorbed Ca accumulated in the leaves than in the roots or stems. Thus, aluminum toxicity in peaches may be related to a reduction in Ca uptake rate and not to inhibition in translocation of Ca.

Contributor Notes

Received for publication January 22, 1977.

Soil Scientist.

Research Plant Physiologist.

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