Ethephon has mixed effects on table grapes

Ethephon has mixed effects on table grapes

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The growth regulator ethephon (Ethrel) has been shown to improve coloring of the table grape varieties, Red Malaga, Queen, Tokay, and Emperor if applied after some of the berries have begun to show color.Preliminary bostik mvp trials with Cardinals showed slight color benefits, of dubious commercial significance.Trials with Ribier have never shown benefit.

More detailed trials were established at the Kearney Horticultural Field Station near Parlier in hiboost 4k smart link Fresno County during the 1976 season.