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Clinic can diagnose crop ailments

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Karen Ward runs WSU’s Plant Pest Diagnostic Clinic.

If you find strange rots or spots on your fruit trees or some mysterious ailment, Washington State University’s Plant Pest Diagnostic Clinic is ready to help out.

Karen Ward,

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Pests sneak into U.K.

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Two new pests—the brown marmorated stinkbug and spotted wing drosophila—have snuck into the United Kingdom but are not yet established there.

Two adult brown marmorated stinkbugs were intercepted at a U.K. airport in 2010 in passenger

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Stinkbug watch

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Entomologists in New York State developed a clever way of keeping an eye out for inroads by the brown marmorated stinkbug. It’s been found across the state. So far, however, numbers have stayed small, and,

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Organic control for flea weevil

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Damage by apple flea weevil.
Matt Grieshop­­­

Organic apple growers in the Midwest appear to have a relatively simple solution to their problems with apple flea weevil, which appeared suddenly as a problem in Michigan two years

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New pests threaten Washington grapes

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Doug Walsh, holding a mealybug pheromone trap, says that such traps have been used throughout the state to look for vine mealybug. Thus far, the destructive pest that’s prevalent throughout California grape regions, has not

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Trapping for grape mealybug

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Brian Bahder transfers a first-instar grape mealybug from a grapevine leafroll-diseased Concord vine to a healthy Concord vine to assess mealybug competency as a vector.
Melissa Hansen

With the insidious spread of grapevine leafroll disease in Washington

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New pesticide safety guide released

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Many practical ideas to solve everyday problems with pesticide handling have been invented and used by growers throughout Washington State. The Pacific Northwest Agricultural Safety and Health Center, known as PNASH, studied these farm-bred and

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New options for fireblight control

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Fireblight in apple.

New products could be registered in the United States this season to manage fireblight in apples and pears.

One is Blossom Protect whose active ingredient is the yeast Aureobasidium pullulans. It was developed by

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Reduced risk?

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A three-year study just completed in Michigan apple orchards showed that reduced-risk pesticides—which growers are now adopting—are more damaging to the functional ecology of the orchards than the products they are replacing.

Orchards using these reduced-risk

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Stinkbug poses BIG THREAT

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The dreaded brown marmorated stinkbug is gradually making its way towards major tree fruit and grape growing regions in ­Oregon and Washington where $4 billion in crops are at risk.

This stinkbug species, which originated in

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Stinkbugs found in sweet cherries

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Stinkbugs are likely to move into cherry orchards by mid- to late July.
Photo courtesy of washington state University

Stinkbugs in the past haven’t been of much concern for Pacific Northwest cherry growers. But with later varieties

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New pest keeps industry guessing

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A female spotted wing drosophila is about to enter a Contech apple cider vinegar trap. WSU scientists will be trapping for the pest during the coming season and will send out e-mail alerts.
ELIZABETH BEERS, WSU

Will

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How to conserve beneficials while fighting stinkbug

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Penn State University entomologist Dr. David Biddinger provided some rules of thumb growers can apply so as not to destroy all natural enemies and the integrity of integrated pest management programs as they go about

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Biocontrol is fragile

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These four creatures have survived pesticide treatments to become the most important biocontrol agents in eastern apple orchards. There are two species of predatory mites (far left and far right pictures); the “mite destroyer” ladybeetle

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Bunch rot, a different beast

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Michelle Moyer reminds growers who had powdery mildew problems last year to prepare for disease carryover this year. Botrytis bunch rot is a different beast than grape powdery mildew, says

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Strategies for controlling bacterial spot

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The O’Henry peach variety is a poster child, highly susceptible to bacterial spot. Symptoms include fruit spots, leaf spots, and twig cankers. Bacterial spot is a serious problem for peach

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Growers fear loss of antibiotics

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The shape of organic apple production in the future could well hinge on decisions made in the next few years about the continued use of antibiotics for control of fireblight.     Two key

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Manage resistance at the warehouse

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Chang-Lin Xiao recommends that use of Penbotec and Scholar alternate from year to year to preserve their effectiveness against fungal pathogens like this blue mold on a Gala apple. Chang-Lin

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New fungicides benefit from lessons of Benlate

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Fruit growers will have new fungicides this year to help manage diseases as diverse as leaf spot in cherries, scab in apples, and brown rot and scab on peaches.      The new

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Let natural enemies play a role

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Growers today tend to think that integrated pest management has to do primarily with monitoring pests and scheduling ­pesticide applications.

But that’s not what IPM was envisioned to be at the outset, Dr. Nick Mills, entomologist

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Good Stuff

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Ty Snyder promoted
C & O Nursery of Wenatchee, Washington, has promoted Ty Snyder to the position of orchard manager. Snyder has worked at the nursery since 2006 and earned an associate degree in agriculture from

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Mildew resistance quest continues

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Next year, Nnadozie Oraguzie will begin field testing a new generation of mildew-resistant sweet cherry selections as he works to combine disease resistance with high fruit quality traits.
Courtesy of Washington State University

While there is keen

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Research station has organic orchard

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Joe Nicholson of New York with a Rubinola tree that shows symptoms of sulfur intolerance.
Geraldine Warner

Britain has only about a dozen serious ­commercial organic growers, estimates Dr. Jerry Cross, who heads the entomology and plant

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Spray equipment still evolving

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The Raven spray controller has brought major improvements to orchard spraying.
Courtesy Blueline Equipment

A major breakthrough in orchard spray technology in the last decade has been a rate control system that automatically calibrates sprayers during spraying,

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Precise IPM requires good data

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This Washington State University weather station in Tonasket is part of the AgWeatherNet service, providing growers with detailed environmental data.
courtesy washington state university

More precise integrated pest management practices go hand in hand with accurate weather

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Focusing on tomorrow today

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Apple, pear, and walnut growers will have several opportunities this winter to learn how to take advantage of natural enemies in their orchards for controlling key pests.

Washington State University entomologist Dr. Vince Jones expects to

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Research spinoffs result in smarter sprayers

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The variable output nozzles and adjustable louver, developed for this citrus sprayer as part of a specialty crop research project, should soon be available for tree fruit sprayers.

Using autonomous tractors to perform pesticide spraying is

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Spraying with sprinklers

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On a cold rainy day with apple scab threatening, wouldn’t it be nice to push a button labeled “Fungicide” and let the orchard spray itself?

Spraying is one of those things all orchardists have to do.

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$60-million boost

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A mechanical harvester is part of a major research project relating to production and marketing of stem-free sweet cherries.

More than $60 million dollars in grants have been awarded so far through the Specialty Crop Research

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Pest help at your fingertips

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Andy Kahn can use his iPhone to access WSU’s Decision Aid System, which automatically uploads weather data from the AgWeatherNet and provides pest predictions and control recommendations.

Washington State University’s online Decision Aid System has made

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Grape industry goes after viruses

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Grapevine leafroll disease is easy to diagnose in red varieties, like this Cabernet Sauvignon vine, but more difficult in white varieties where the only symptom might be downward curling of leaves.

The Washington grape industry has

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The Tangler

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Brett Bunker shows off the launcher he uses to dispense pheromone-containing capsules in apple trees. The clip in the magazine holds 25 capsules. Left: When the Tangler is launched, the capsule splits and the string

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Electronic trap saves labor

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Johnny Park, engineer of the Z-Trap, was in Washington State recently to demonstrate a new codling moth trap that counts insects, sending trap data to a computer.
Melissa Hansen

An electronic trap for monitoring insect pests will

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Growers battle stinkbug

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Eastern peach growers report having greater success in controlling the brown marmorated stinkbug this year than they did in 2010.

Rice Fruit Company installed new defect sorting equipment in its apple packing operation earlier this year—making

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Sticking with pears

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Rood built this platform especially for removing fireblight strikes. Controls let him steer, brake, clutch, shift gears, and control acceleration. Shears or saw on a long pole are powered by air.
Richard Lehnert

There was a time

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Put us to work for you

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I am fortunate to travel the country meeting with apple growers, packers, and other USApple members, and hear firsthand the issues and challenges they are facing daily. I am often asked, “What are the important

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Good Stuff

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Jack Everhart, left, New Holland, Inc., congratulates John Riel, right, of Burrows Tractor.

Recognition for Burrows
The New Holland dealership Burrows Tractor, Inc., in Yakima, Washington, has earned membership to New Holland’s President’s Club in recognition of

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Building a better fly trap

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The spotted wing drosophila is easy to catch using cheap and readily available baits.

Apple cider vinegar is being recommended for homemade traps in the Pacific Northwest. A cheap red wine can be used, also.

But what

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Virus-free peach trees

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Simon Scott moves plants at the Musser Fruit Research Farm’s greenhouse, where about 300 trees of a hundred low-chill cultivars will be grown.
Richard Lehnert

Until plum pox virus (PPV) appeared in Pennsylvania peach orchards in 1999,

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Fast, easy test reveals fungicide resistance

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When disease organisms become resistant to a fungicide, spraying is like hitting them with rainwater—expensive rainwater.

In the last three years, Georgia and South Carolina peach growers have saved money from what would have been wasted

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Peaches on ridges

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Impressed by early research results, Titan Farms planted 200 acres of peaches on ridges to try out this new approach to Armillaria root rot.
Richard Lehnert

Since coming to Clemson University in 2000, Dr. Guido Schnabel has

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Pear psylla pheromone discovered

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The newly discovered pear psylla pheromone is being tested in the field to find out how attractive it is to males. This mesh sticky trap has a septa of the chemical in the middle.
CHRISTELLE GUÉDOT,

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Good Stuff

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New spraying book
Dr. Andrew Landers’ new book Effective Vineyard Spraying is now available for purchase from Cornell University. Landers, who directs the application technology program at Cornell, has conducted sprayer workshops for growers from coast

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Fungicide tools and resistance management guidelines

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As of spring 2011, growers in eastern Washington have several new fungicides at their disposal for managing powdery mildew.

For cherry growers, new products include Adament ­(tebuconazole + trifloxystrobin), Quash (metconazole), and Unicorn (tebuconazole + sulfur).

Four

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Stinkbug spreads in Pacific Northwest

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Wasps that parasitize brown marmorated stinkbug eggs are being screened in quarantine.
Bugwood

Apple growers in the Mid-Atlantic region figure they suffered $37 million in crop damage last year caused by the brown marmorated stinkbug, and that’s

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IPM in peril

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For nearly 40 years, integrated pest management  has been the hallmark of progressive thinking in fruit production and agriculture generally. If you used IPM, you were on the cutting edge.

So imagine how surprised New York

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Who’s making the decisions?

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A thousand pear growers in Washington and Oregon received a survey this spring asking about their pest management ­practices.

Dr. Jessica Goldberger at Washington State University’s Department of Crop and Soil Sciences in Pullman, is conducting

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Counting the benefits of biocontrol

A more expensive pesticide might be more economical if it lets natural enemies do their work.

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Effective, economical weed control

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The Wonder Weeder and similar tools deliver orchard weed control at less cost than chemical controls.

The Holy Grail that organic apple growers are looking for is an organically acceptable herbicide that acts like glyphosate or

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Cutting costs of IPM

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Vince Jones at Washington State University is testing the new Z-Trap, which zaps insects and records when they were trapped. It might be possible to remotely identify the type of insect, also.

The key to integrated

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