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- Author or Editor: H. C. Kirkpatrick x
- Journal of the American Society for Horticultural Science x
Abstract
‘Elberta’ (Prunus persica (L.) Batsch) peach seedlings were grown in nutrient solutions for 27 days with aluminum concentrations of 0, 222, 666 and 2000 μ m; the 2000 μ m concentration induced A1 toxicity symptoms in leaves and severely restricted root growth. The early stage of A1 toxicity was characterized by marginal chlorosis that later developed into necrotic areas that extended along the veins toward the midrib. Advanced stages of toxicity were characterized by collapse of the midrib, terminal dieback and defoliation of the seedlings which are typical symptoms of calcium deficiency in peaches. At high A1 concentrations roots died back and new roots developed as irregularly shaped cylinders with constrictions and enlargements at the root apex.