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Grape: Vitis labrusca ‘Concord’
Black rot; Powdery mildew: Guignardia bidwellii; Uncinula necator

Evaluation of organic fungicides for control of black rot and powdery mildew of Concord grapes, 2007.

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First Author: Bryan Hed, Penn State University.

Additional Authors: J.W. Travis

Section: Small Fruits

Keyword(s): plant extracts; biological control; biorational

Geographical location: Pennsylvania, United States

Products Tested: Lime; Lime Sulfur; Champion WP; Kocide 3000; Cueva

Active chemical(s): Calcium hydroxide; Calcium polysulfide; Copper hydroxide; Copper hydroxide; Copper octanoate

Biological Control: 1. Armicarb O; potassium bicarbonate; Helena Chemical Co. 2. Citrex 100; ascorbic and other organic acids; Citrex, Inc. 3. Milstop; potassium bicarbonate; BioWorks, Inc. 4. EF400; various plant extracts and oils; USAgritech, Inc. 5. Serenade ASO; QST 713 strain of Bacillus subtilis; AgraQuest, Inc. 6. NuFilm P; poly-1-p-menthene; Miller Chemical and Fertilizer Corp. 7. pH Plus; polyols-wetter, spreaders, penetrants, acididulants, and spray water buffers; Marketing ARM International 8. Xenic; polyethylene glycol; Marketing ARM International

Biorational Product:

Manufacturer(s): Graymont, Inc.; Miller Chemical and Fertilizer Corp.; Nufarm Americas Inc. (formerly Agtrol International); E. I. duPont de Nemours and Company, Inc.; W. Neudorff GmbH KG

Publication date: March 25, 2008

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