Foliar accumulation of zinc in tree species grown in pine bark media amended with crumb rubber

Document Type

Article

Publication Date

1-1-2001

Abstract

Incorporated crumb rubber (CR) increased Zn tissue levels up to nine times the normal range in tree species. There was a linear increase in Zn tissue accumulation with increasing percentages of crumb rubber for river birch (Betula nigra L.), lacebark elm (Ulmus parvifolia Jacq.), and pecan [Carya illinoinensis (Wangenh.) C. Koch]. Pecan leaves containing high levels of Zn exhibited no visual symptoms, unlike the remaining tree species exhibiting leaf chlorosis. Results suggest that crumb rubber incorporated at rates greater than 25% may cause abnormally high concentrations of Zn to accumulate in plant tissue.

Publication Source (Journal or Book title)

Journal of Plant Nutrition

First Page

503

Last Page

510

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