Good Fruit Grower

February 15

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www.goodfruit.com GOOD FRUIT GROWER FEBRUARY 15, 2015 13 T R E C E T E C H N O L O G Y ´ ´ 200 - 280 DISPENSERS/ACRE = SUPERIOR MATING DISRUPTION The ONLY Mating Disruption System for both MALE… and FEMALE Codling Moth. CIDETRAK ® CMDA COMBO ™ PP PUZZLE PIECE mating disruption dispensers contain a unique combination of Codling Moth pheromone AND a patented male AND female behavior modifying kairomone called DA. Designed to deliver long-lasting performance with remarkably fast application for apples and pears at 200 - 280 DISPENSERS/ACRE. # Disrupts oviposition, reduces mating, maintains higher virginity and lowers damage. #! Ready-to-use package, ready-to-apply dispensers. # " Long-lasting full season performance. INSEC T PHEROMONE & KAIROMONE SYSTEMS INCORPORATED ® Your Edge – And Ours – Is Knowledge. CIDETRAK ® CMDA COMBO ™ PP PUZZLE PIECE dispenser in use Contact your local supplier and order now. Visit our website: www.trece.com or call 1- 866 -785-1313. ) %**# %(#%% &'%'%"%!&$%# %( WSDA ORGANICALLY APPROVED! N ew findings by Washington State University scientists show why powdery mildew can be so hard to control in cherries. Fruit are susceptible nearly all season long. Powdery mildews are a large group of fungi containing around 850 different species. They affect a wide range of crops, from tree fruit, grapes, and hops to strawberries and small grains. The cherry powdery mildew is Podosphaera clandestine and, like all powdery mildews, it's an extremely needy pathogen, requiring perfect environmen- tal conditions and a living and susceptible host to grow and produce the disease. Scientists have known about powdery mildew for some 250 years, says Dr. Claudia Probst, postdoctorate research associate at WSU. Yet, there are still many unanswered questions. "That's partially because it's so hard to work with obligate biotrophic fungi (that can only reproduce on living cells) in the laboratory. To do lab work, we use small humidity chambers using specific temperature and humidity regimes to create the disease, but much of our work must be done in orchards." Probst, who is working with Dr. Gary Grove, plant pathologist and director of WSU's Irrigated Research and Extension Center in Prosser, presented her research during the annual Cherry Institute meeting held in January in Yakima, Washington. Probst and Grove want to better understand the epidemiology of powdery mildew on sweet cherries so growers can improve pest management strategies. COURTESY OF CLAUDIA PROBST Examples of cherries showing powdery mildew infection at harvest. "Surprisingly, cherries are most resistant to powdery mildew early on and lose their resistance as fruit develop, becoming least resistant near maturity at harvest." —Claudia Probst

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