Report No. 9:SMF010
Grape: Vitis vinifera 'Chardonnay'
Powdery mildew: Erysiphe necator

Fungicide control of grape powdery mildew, trial I and IV, 2014

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First Author: T.T. Nguyen, University of California, Davis

Additional Authors: N.S. Morris, W.D. Gubler

Section: Small Fruits


Geographical location: California, United States

Products Tested: SSS6; OR009; OR114; Microthiol Disperss; Timorex Gold; Quintec; Regalia; Kinetic; Taegro; Purespray Green; Serenade Optimum; GOP-Bran; GOP-Oil; Golden Pest Spray Oil; Rally; QSE-40; QSE-60; K-Phite 7LP; Sysstem Cal; Sysstem SeaCal; Vigor Cal; Cinnerate; Double Nickel 55WDG; Double Nickel LC; Tavano 5% SC; Tactic; Latron B-1956

Active chemical(s): N/A; N/A; N/A; Sulfur; Oil derived from the tea tree, Melaleuca alterniflora; Quinoxyfen; Extract of Reynoutria sachalinensis; blend of polyalkyleneoxide modified polydimethylsiloxane and nonionic surfactants; Bacillus subtilis strain FZB24; low range oil; Bacillus subtilis strain QST 713; N/A; N/A; soybean oil; Myclobutanil; N/A; N/A; potassium phosphate; phosphoric acid, calcium, copper; phosphoric acid, calcium; calcium; Cinnamon oil; Bacillus amyloliquefaciens strain D747; Bacillus amyloliquefaciens strain D747; Polyoxin D zinc salt; synthetic latex, 1,2-propanediol, alcohol ethoxylate, silicone polyether copolymer; Modified phthalic glycerol alkyd resin

Biological Control: 1. Cinnerate, cinnamon oil, Sym-Agro. 2. Double Nickel 55 WDG, Bacillus amyloliquefaciens strain D747, Certis. 3. Double Nickel LC, Bacillus amyloliquefaciens strain D747, Certis. 4. Golden Pest Spray Oil, soybean oil, Stoller Enterprises. 5. JMS Stylet Oil, paraffinic oil, JMS Flower Farms, Inc. 6. K-Phite 7LP, potassium phosphate, Plant Food Systems, Inc. 7. PureSpray Green, low range oil, Petro-Canada. 8. Regalia, extract of Reynoutria sachalinensis, Marrone Bio Innovations. 9. Serenade Optimum, Bacillus subtilis QST 713, Bayer Crop Science. 10. Sysstem Cal, phosphoric acid, calcium, copper, Agro-K. 11. Sysstem SeaCal, phosphoric acid, calcium, Agro-K. 12. Taegro 13 WP, Bacillus subtilis strain FZB24, Syngenta. 13. Tavano 5% SC, polyoxin D zinc salt, Certis. 14. Timorex Gold, oil derived from tea tree Melaleuca alterniflora, Biomor Israel Ltd. 15. Vigor Cal, calcium, Agro-K.

Biorational Product:

Manufacturer(s): N/A; N/A; N/A; United Phosphorus, Inc.; Biomor Israel Ltd.; Dow AgroSciences LLC; Marrone Bio Innovations; Helena Chemical Company; Syngenta; Petro-Canada; Bayer CropScience; N/A; N/A; Stoller Enterprises; Dow AgroSciences LLC; N/A; N/A; Plant Food Systems; Agro-K; Agro-K; Agro-K; Sym-Agro; Certis; Certis; Certis; Loveland Products; Dow AgroSciences LLC Leaf removal

Publication date: March 20, 2015

The American Phytopathological Society