COPPER TOXICITY IN VINEYARDS
Keywords:
grape, viticultura, titis, copper, Cu, toxicity, soil, phytossanitary applicationsAbstract
The use of copper based phytossanitary products in viticultura is being done for long years. In Rio Grande doSul the Bordeaux mixture (with 1% CuSO4 ) is, always, part of the production system for grapes. High leveis of soil and leafcopper are being detected in vineyards where it is used. Up to now, no symptoms of copper toxicity on vines have beenreported, except for vineyard replanting. Aiming to avoid future damage to vines, soils and subterrancan water, new forms ofapplication of the product sbould be adopted, like low volume application and with lower concentration. Liming and massivemanure applications are practices that might be used to minimize the problem. In some cases, quit or reduce applications ofcopper based products might be necessary.
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