RT Journal Article
SR Electronic
T1 Copper Toxicity in Woody Ornamentals
JF Arboriculture & Urban Forestry (AUF)
FD International Society of Arboriculture
SP 68
OP 72
DO 10.48044/jauf.1976.015
VO 2
IS 4
A1 Kuhns, Larry J.
A1 Sydnor, T. Davis
YR 1976
UL http://auf.isa-arbor.com/content/2/4/68.abstract
AB Rhododendron obtusum Planch. ‘Delaware Valley’ (Delaware Valley Azalea), Buxus sempervirens L. (common boxwood) and Cotoneaster divaricata Rehd. and Wils, (spreading cotoneaster) grown in sand culture received a complete nutrient solution containing Cu concns ranging from 0.032 ppm to 100 ppm. Development of Cu toxicity symptoms were recorded for 8 weeks, then Cu, Fe, and Mn levels in roots, stems, and leaves were determined. Chronic Cu toxicity symptoms were interveinal chlorosis and stunted growth. Acute Cu toxicity caused wilting, desiccation, and death of all affected plants. Tissue Fe and Mn levels were not consistently correlated to the Cu concn of the treatment solution. Only tissue Cu levels proved useful as an index of Cu toxicity.