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VCRB :: Contents of Volume 50/1999 :: Detailed information


CHEMICAL CONTROL OF WHITE RUST (ALBUGO CANDIDA) ON HORSERADISH (AKMORACIA RUSTICANA)

Władysław MACIAS and Józef ROBAK
Research Institute of Vegetable Crops Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland


Summary

Studies were conducted to evaluate the efficacy of nine fungicides, their rates and methods of application for controlling white rust (Albugo Candida) on horseradish cultivars Piotrkowska and Krenox. Trials were carried out in 1996 and 1997 at experimental field at Skierniewice. Fungicides were applied as foliar sprays. Additionally azoxystrobin was used as dipping treatment of root sets. When symptoms of white rust became to be visible on leaves, the plants were sprayed first time with the chemical tested. Azoxystrobin and methalaxyl + mancozeb applied as foliar sprays were the most efficient fungicides. A satisfactory control of the pathogen was also obtained when the root set of horseradish was dipped into a 0.025% solution of azoxystrobin. Chlorothalonil and mancozeb may be useful for controlling white rust, too.

keywords:horseradish, white rust, fungicides

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