Abstract
Abstract Chlorotic silver maples (Acer saccharinum L.) were treated during bud break with soil-applied EDDHA (ethylenediaminedi-0-hydroxyphenylacetate) and trunk implants of encapsulated FAC (ferric ammonium citrate), EDTA (ethylenediaminetetracetate) and DTPA (diethylenetriaminepentaacetate). Foliar levels of Ca were higher in chlorotic than green tissue. Chlorophyll levels and twig growth of treated trees were not significantly different from chlorotic controls after treatment. Soil Fe levels were different under chlorotic and green control plants. However, foliar Fe analyses demonstrated that Fe levels were not different in green and chlorotic leaf tissue.
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