Good Fruit Grower

Management One last GUTHION SPRAY F ruit growers in Michigan can use existing stocks of the insecticide azinphos-methyl (Guthion) one more time before it is phased out at the end of September this year. When should they use it? Michigan State University tree fruit entomologist Dr. Larry Gut suggests they target flies���the apple maggot in the case of apple growers, the cherry fruit fly if they grow tart cherries. For several years, Gut has been working with growers helping them shift to newer ���reduced risk��� insecticides as the U.S. Environmental Protection Agency put Guthion on a phaseout program that gradually reduced the number of applications they could make and the amount of active material they could use in a season. The phaseout was supposed to end with the 2012 season, but in Michigan, both the apple and cherry crops were decimated by spring freezes. The EPA was persuaded to allow one more season of use���so growers could use by Richard Lehnert up stocks they had on hand. So growers can use up to three-fourths of a pound of active material��� about one spray���this year. In the announcement last August 29, the EPA made it clear it has not changed its views about the 2008 cancellation order that was to Growers should target it toward cherry fruit fly and apple maggot. photos CoURtEsY oF MIChIGAN stAtE UNIVERsItY Pest Cherry fruit flies and apple maggots are hard to control with newer insecticides that must be ingested because they don���t feed much before laying their eggs. phase out azinphos-methyl over six years because of ���high worker and ecological risks.��� ���As a result of this year���s abnormal weather events, however, growers have been left with unused stocks that cannot be used unless EPA modifies the existing Larry Gut Prevent Replant Disease and Nematode Infestation Schedul your e applicat ion TODAY! the ving Ser west orth ���c N Paci with Telone* C-17 soil fungicide and nematicide (includes chloropicrin) CUSTOM ORCHARD FUMIGATION Chris Ford/Dale England/Len England 509 687-9572 Chris, cell/text: 509 366-5180 Dale, cell/text: 509-860-9058 Len, cell: 509-679-7124 E-mail: customorchardfumigation@live.com Visit us at customorchardfumigation.com 28 MARCH 1, 2013 GOOD FRUIT GROWER ! " www.goodfruit.com

• Cover
• FEATURE: For the birds: Project seeks to document bird damage to fruit and develop solutions.
• FEATURE: Five things to consider when buying a new orchard sprayer
• COVER STORY: Stinkbug is Strong Flier- New research shows that the brown marmorated stinkbug can move long distances independently.
• FEATURE: Bug pheromone studied- Brown marmorated stinkbug males emit pheromone to attract females.
• FEATURE: Be on the lookout for brown marmorated stinkbug
• FEATURE: One last Guthion spray- Growers should target cherry fruit fly and apple maggot.
• FEATURE: Part III: Enhancing biocontrol - Use of natural enemy models is a new tool for IPM.
• Extension leader Des Layne has ambitious goals
• U.S. pears head to China: Fruit must meet several requirements concerning pests and diseases.
• Food Safety Committee guides research
• Certification not unique to produce
• Speak out: FDA needs to hear how proposed food safety rule will impact growers.
• Bacterial canker: Freezes last spring set stage for epidemic of the disease in cherries.
• Shorten laterals to cut thinning costs: Shortening laterals of peach and nectarine trees in winter cuts fruit thinning costs and renews fruiting wood.
• Enveloping vines in warmth: Wrapping vines in plastic during spring yielded more growing degree-days and an advanced harvest.
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• Last Bite: Do you know your pests?
• Good to know: New traps and lures for tree fruit pests
• Good Point: Forecasting future Asian import demand
• In My View: Optimistic about pears