Tolerance of Several Grape Cultivars to Injury from Atmospheric Contaminations of 2, 4-D
DOI:
https://doi.org/10.71318/apom.1969.23.3.53Abstract
Grapes grown in Northeastern Kansas are regularly and seriously injured by 2,4-D, which drifts as vapors from widescale use on crop and non-cropland areas. During late June 2,4-D injury usually becomes apparent in the Kansas Agricultural Experiment station vineyard in Doniphan county. Thereafter, all new growth on sensitive cultivars typically has distorted leaves and shoots associated with exposure to phenoxy compounds. In July and August, the older leaves turn brown and fall. With that foliage gone, the fruit does not ripen properly. Much of the fruit on vines most severely affected is worthless and must be discarded.
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