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Grape: Vitis vinifera 'Chardonnay'
Powdery mildew: Uncinula necator

Fungicide control of powdery mildew, trials IV and V, 2009.

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First Author: I.S. Bay, University of California, Davis

Additional Authors: C.N. Janousek, W.D. Gubler

Section: Small Fruits


Geographical location: California, United States

Products Tested: BAS56 003F; Cueva; Flint; Kumulus; LEM 17 SC; Mettle; Polyoxin-D; Pristine; Quintec; Sovran; Sylgard 309; Viticure; YT699

Active chemical(s): Metrafenone; Copper octanoate; Trifloxystrobin; Sulfur; Penthiopyrad; Tetraconazole; Polyoxin-D; Pyraclostrobin + boscalid; Quinoxyfen; Kresoxim-methyl; Polysiloxane; Triflumizole; Unknown

Biological Control: 1) Timorex Gold; oil derived from the tea tree Melaleuca alterniflora; Biomor Israel LTD.

Biorational Product:

Manufacturer(s): Nufarm Americas Inc. (formerly Agtrol International); Neudorff; Bayer CropScience; BASF Corporation; DuPont; Isagro-USA; Arysta; BASF Corporation; Dow AgroSciences LLC; BASF Corporation; Dow Corning Corporation; Chemtura Corporation; DuPont

Publication date: March 26, 2010

The American Phytopathological Society