Grape Disease Control TM
Fungicide for Grape Disease Control fungicide is a mixture of two complementary active ingredients that provide excellent protection against Botrytis bunch rot and sour rot on grapes. The two different modes of action provide growers with built-in resistance management that adds to the grower s peace of mind that will provide effective disease control while utilizing sound Integrated Pest Management techniques. Conveniently premixed, combines cyprodinil, the systemic component, and fludioxonil, the contact component. attacks the pathogen at four different stages in the pathogen life-cycle, providing longlasting control and protecting both the leaves and fruit by controlling disease on the plant surface and within the plant. University trials demonstrate that the superior disease control provided by on grapes extends into postharvest benefits (see graph titled Effect of Fungicides on NBSS 91 Days After Cold Storage ). Not only can grape growers trust for superior disease control, but extensive research trial results indicate that when using there is no delay in grape ripening and no negative effect on alcoholic and malolactic fermentation. Also, has no effects on wine color or taste. Serious Grape Diseases Botrytis Bunch Rot (Gray Mold) and Sour Rot Botrytis bunch rot (gray mold) symptoms on grapes (photo courtesy of American Phytopathological Society) Sour rot symptoms on grapes Botrytis bunch rot (gray mold) (Botrytis cinerea) Botrytis bunch rot overwinters as dormant mycelium in buds or on bark, spurs and cordons, or as sclerotia in berry mummies. It favors cool, damp weather conditions. Spore germination and infection require at least 9 percent humidity or free moisture on the plant surface. In the spring, spores produced from overwintering fungus are water-splashed and windblown to newly emerging leaves, and infections that occur during bloom often become dormant until later in the season when sugar concentration increases in the infected berry. Spores from infected fruit may infect ripe berries as harvest approaches. Prior to bloom, large reddish brown necrotic lesions occur on leaves (usually on the leaf edge). Infected inflorescences often rot and dry out. Pedicel or rachis infection forms small brown patches that turn black, and portions of the cluster wither and drop off. Fruit infection causes clusters to rot and berries to turn brown or a reddish color, and a brownish-gray mold may envelop infected berries. Sour rot (Aspergillus niger, Alternaria tenuis, Botrytis cinerea, Cladosporium herbarum, Rhizopus arrhizus, Penicillium spp., and others) As berries ripen and sugar content passes 8 percent, injured fruit becomes susceptible to invasions by many fungi. The fungi may enter at any injury point caused by insects, birds or mechanical damage, or through lesions resulting from powdery mildew or other diseases. Many sour rot fungi produce massive numbers of spores that are disseminated by wind and splashing water. Summer bunch rot favors high relative humidity, rain and sprinkler irrigation while berries are maturing. With longer wet periods, the greater the rot will be. Injury or damage to the fruit may pre-dispose the bunch to infection. Penicillium infection on grapes typically leads to sour rot that shows bluish sporulation, and Rhizopus rot infection typically leads to sour rot that shows black sporulation. Affected berries often drip juice and smell like vinegar.
Technical Overview Spectrum of Activity Botrytis bunch rot (gray mold) (Botrytis cinerea) Sour rot (Aspergillus niger, Alternaria tenuis, Botrytis cinerea, Cladosporium herbarum, Rhizopus arrhizus, Penicillium spp., and others) Technical Profile Chemistry Formulation Packaging Precautions/Safety Tank Mix Cyprodinil [methionine biosynthesis inhibitor (FRAC Group 9)] and fludioxonil [protein kinase inhibitor (FRAC Group 12)] is formulated as a water-dispersible granule composed of 25 percent fludioxonil and 37.5 percent cyprodinil 28-ounce poly bottles Caution, Standard PPE, 12 hour Re-entry Interval (REI) is compatible with many tank mix partners. However, always consult the product label for complete use directions and precautions. at a Glance* Grapes Rate Maximum Amount Per Growing Season Application Methods Minimum Gallons Per Acre (GPA) Preharvest Interval (PHI) Adjuvants REI Rotation Crop Restrictions 11 14 oz/a 56 oz/a of (1.4 lbs a.i./a of cyprodinil-containing products and.9 lb a.i./a of fludioxonil-containing products year) Application may be made by ground. Aerial application in California only. Make no more than one application by air. Aerial applications in California: 2 GPA of water; for ground applications, use sufficient water volume to provide thorough coverage Do not apply within seven days of harvest (seven-day PHI) Do not use an adjuvant 12 hours Please address the product label for specific rotational crop restrictions. *Always consult the product label for complete use directions and application information. For a complete list of registered crops, consult the product label.
Directions for Use Thorough coverage of on grapes is necessary to provide good disease control. Applications using sufficient water volume to provide thorough and uniform coverage generally provide the most effective disease control. For ground application equipment, apply in a minimum water volume of 2 gallons per acre. Best Use Guidelines Begin applications of at early bloom. Up to three additional applications may be made at berry touch, veraison or preharvest. Botrytis bunch rot is most effectively controlled by ground application using sufficient water volume to provide thorough coverage. Thorough coverage of bunches is essential. For sour rot, make an application at veraison followed by one to two additional applications. Do not apply closer than a 21-day interval. Resistance management: After two applications of, alternate with another fungicide with a different mode of action for two applications. Always consult the product label for complete use directions and application information. Suggested Program for Disease Control on Grapes Grapes Sour rot Make an application of at early veraison and repeat 21 days later if necessary. Reduce berry wounding by insects (feeding damage) or mechanical damage at and after early veraison. TM
Performance Results Effect of Fungicide Control on Sour Rot Botrytis Bunch Rot Percent Bunch Area Infected 3 1 5 Disease Incidence (%) 25 2 15 1 5 25..68 19.6.48 1..2.8.6.4.2 Disease Severity (%) Percent Bunch Area Infected (%) 4 3 2 1 41.3 7.9 6.2 11.7 8.8 Incidence Severity Pristine Source: RG31, Mettler, 28 Gubler, UC Davis Inspire Super 2 oz 14 oz Vangard 1 oz Pristine 18.5 oz Source: USWCF17, California, 29 Hurstak. Variety: Zinfandel The data above reflects three applications: 6/11 inflorescences fully developed; 7/21 berry touch; 8/3 veraison rated 1/2 Botrytis Bunch Rot Percent Incidence Effect of Fungicides on NBSS 91 Days After Cold Storage Percent Incidence (%) 4 35 3 25 2 15 1 5 38. 1. 9. 8. 7. 7. # of NBSS Berries/5 Boxes 15 125 1 75 5 25 1339.8 37.8 763. 433.8 385.8 155. Pristine 18.5 oz Elevate 16 oz Inspire Super 2 oz Vangard 1 oz Source: USWCF26, California, 29 Bettiga Variety: Johannesburg The data above reflects three applications: 5/28 early flower; 6/3 berry touch; 8/27 veraison rated 1/2 14 oz Trim wet Trim dry Pristine Source: RG31, 28 Gubler, UC Davis NBSS = Non-botrytis slip skin = yeast = a postharvest disease Trim wet = rotted berries trimmed out Trim dry = no rotted berries
For more information, visit www.syngentacropprotection.com, www.farmassist.com or call the Syngenta Customer Center at 1-866-SYNGENT(A) (796-4368). 21 Syngenta Crop Protection, Inc., 41 Swing Road, Greensboro, NC 2749. Important: Always read and follow label instructions before buying or using Syngenta products. The instructions contain important conditions of sale, including limitations of warranty and remedy. Inspire Super is not currently registered for use or sale in all states. Please check with your state or local extension service before buying or using this product. Inspire Super,, Vangard and the Syngenta logo are trademarks of a Syngenta Group Company. Elevate is a registered trademark of Arysta LifeScience North America, LLC. Pristine is a registered trademark of BASF Corporation. G&S 4.6418 (7/1) SCP 638-34-A