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Report No. 1:V067
Onion: Allium cepa ‘Infinity’
Purple blotch: Alternaria porri

Evaluation of fungicides for control of purple blotch of onion, 2006.

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First Author: M.K. Hausbeck.

Additional Authors: B.D. Cortright

Section: Citrus, Tropical, Vegetable, and Misc. Crops


Geographical location: Michigan, United States

Products Tested: Tanos; Manzate DF; Kocide 2000; Mankocide; DPX-GFJ52; Ridomil Gold MZ; Bravo WeatherStik; A12946; Kinetic; Dyne-Amic; Ridomil Gold Flo; A14576; Cabrio; Reason; Actigard

Active chemical(s): Famoxadone + cymoxanil; Mancozeb; Copper hydroxide; Mancozeb + copper hydroxide; Copper hydroxide; Mefenoxam + mancozeb; Chlorothalonil; Mandipropamid; Unknown; Unknown; Mefenoxam + chlorothalonil; mandipropamid + difenoconazole; Pyraclostrobin; Fenamidone; Acibenzolar-S-methyl

Biological Control:

Biorational Product:

Manufacturer(s): DuPont; DuPont; DuPont; DuPont; DuPont; Syngenta; Syngenta; Syngenta; Syngenta; Syngenta; Syngenta; Syngenta; BASF Corporation; Bayer CropScience; Syngenta

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