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Fire blight control without antibiotics

Lime sulfur and fish oil can help as part of an integrated strategy.

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Bees are driving pesticide decisions

The desire to protect bees is becoming institutionalized.

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How bad things in the environment gang up and kill bees

The synergistic effect of pesticides in hives.

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Pruning demonstrations on stopping postharvest disease

Three Northwest industry groups have organized pruning demonstrations on how to stop postharvest diseases spread by infected Manchurian crabapple trees.

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New pests threaten IPM

Pest management programs have become softer and more stable over the past few decades, but new invasive pests could change that.

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A humble leader (Video)

Throughout his career, WSU entomologist Jay Brunner has turned science into economic reality for Washington State tree fruit growers.

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Attract and kill

Michigan researchers have designed a device for oriental fruit moth.

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Save money by applying pesticides where it’s needed

Perimeter sprays: Growers can save money applying pesticides only where they’re most needed.

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Bird vs. bird

Raptors seem to instill panic and lasting fear in nuisance birds.

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Scare tactics: Bird management

Birds know when fruit is ripe, and it’s hard to convince them to stay away.

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Options for codling moth control

Three years of research found little difference between hand-applied and canister-released pheromone dispensers for disrupting codling moth mating.

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Stinkbug derails IPM

Researchers fine-tune methods to control brown marmorated stinkbug.

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Stinkbug monitoring tools are a high priority

Researchers aren’t yet recommending that growers trap for stinkbug.

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Progress on biological control

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Research to find a natural enemy that suppresses the brown marmorated stinkbug is showing promise, according to Oregon State University entomologists.

Biological control research led by the U.S. Department of Agriculture, in conjunction with several state

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Be aware of residues from late sprays

In the future, growers will find pesticide regulations getting tighter, not looser.

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Stinkbugs march on Washington

Brown marmorated stinkbug found in 20 counties in Washington and Oregon.

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The latest on dealing with spider mites in vineyards

Two-spotted spider mite has the capability to develop tolerance to miticides in wine grapes.

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Mildew wanted in this vineyard

Scientists collect data on fungicide efficacy, best timings, and rates.

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How well do you know your Honeycrisp disorders?

The good, the bad and the ugly

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Managing crab apple diseases

Crab apple disease management starts in the orchard with pruning.

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Know your enemy: Little cherry disease (VIDEO)

Different causal agents are involved in little cherry disease.

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Cherry diseases require action

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The appearance of little cherry diseases calls for aggressive action, says Dr. Ken Eastwell, plant pathologist for Washington State University.

“When it comes to little cherry diseases, inaction is not an answer,” he said, adding that

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Fighting fireblight through acquired resistance

A new product can enhance fireblight control by stimulating the tree’s defenses.

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The plant doctor

Plant diagnostic clinic is a resource for growers.

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Brown rot surprises cherry growers

Tart cherry growers need to watch out for European brown rot as bloom arrives.

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Preventing storage rots

What you find at packing time started in orchards at harvest.

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Pear research never ending

Oregon State University researcher is retiring in May after studying pear diseases for more than 35 years.

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Medford’s pear industry rebounds

Good Fruit Grower visited Medford to see how the region has adjusted to industry changes. The news is good.

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Too hot to handle

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Pyrethroid barrier trunk sprays have proven effective against cutworms in Washington State, but for growers who want to avoid using pyrethroids, an organic alternative is looking pretty “hot” in research trials.

The industrywide adoption of trunk

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Monitoring, managing codling moth clearly and precisely

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A research report from Alan Knight, USDA–Wapato; Loys Hawkins and Kathleen McNamara, Bear Creek Orchards, Oregon; and
Rick Hilton, Oregon State University

Today, growers have a number of tools to effectively manage codling moth, including sex pheromones,

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Alternatives for disease control

Chitosan not only reduces decay but induces resistance in the plant.

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Sustainable organics

Jim Koan wants organic practices to be based on science, not politics.

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A common sense organic approach

Silver Apple Award winner Ray Fuller approaches organic production from a scientific point of view.

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Attack when pest defenses are down

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Research findings at the University of California, Davis, might help growers apply insecticides to control spotted wing drosophila when the insect is the most vulnerable.

The pest, Drosophila suzukii, infests soft-skinned fruits, including cherries, peaches, grapes,

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Pests ­modified with lethal genes

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A  British biotechnology company is developing a novel new way to control insect pests. Called RIDL, which stands for Release of Insects with Dominant Lethality, it works somewhat like sterile insect releases.

Instead of using radiation to

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Little cherry disease is spreading

A new discovery this summer could help explain the growing spread of little cherry disease in the Pacific Northwest, but it will make control more difficult, say researchers.

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Preparing for change

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When Dr. Stefano Musacchi arrived in Washington State in August, he knew the expectations were high.

Musacchi, a world-renowned pomologist from Italy, was appointed to a new position at Washington State University created with funding from

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Michigan growers asked to support research

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The Michigan tree fruit industry is exploring the idea of creating a commission to collect money from growers to strengthen research efforts.

The new Michigan Tree Fruit Commission would be authorized to collect assessments from the

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Citizen scientists needed to count stinkbugs

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The scientists working to conquer brown marmorated stinkbug are looking for homeowner volunteers in the Mid-Atlantic States to count stinkbugs.

They want these citizen scientists to count the number of stinkbugs they see on the exterior

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Grape IPM guide available

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Pacific Northwest extension specialists recently released a new field guide for vineyardists that provides information about general vineyard management and trouble-shooting problems from a systems-wide, integrated pest management (IPM) approach. The guide, Integrated Pest Management

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Peach growers challenges

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Growing peaches is getting easier in some ways, harder in others, a rather normal description of many orchardists’ efforts. Take two steps forward, then one back, and call that progress.

Clemson University professor of horticulture Dr.

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Precise disease management is complicated

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Like insects, diseases develop in predictable ways based on ­growing-degree accumulations, but diseases are driven more by moisture than are insects, which makes management more complicated. For both insects and diseases, predictive models are used,

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Growers need to adjust sprayers for deposition and drift

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Precise application of pesticides in orchards provides growers with better crop protection, less environmental pollution, and better use of resources. It costs less when pesticides are not wasted.

Since coming to Cornell University in 1998, Dr.

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Pest management requires precise tools

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Over the years, fruit growers have traded in their shotgun-like pest control tools for more precise rifle-like tools and bullets capable of hitting moving targets with great accuracy. As they adopt these new weapons, they

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New spray concept proves feasible

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If we had to irrigate orchards by pulling tanks of water down the alleys, would we do it?

We do that now with pesticides and plant growth regulators, hauling loads of water with small amounts of

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Top Five pear research needs

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Although most pears are grown in traditional orchards, the same way they’ve been grown for many decades, there’s not a great momentum for change. Ray Schmitten, a pear grower in Cashmere, Washington, says that innovation

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WSU apple breeder screens for fireblight resistance

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Washington State University’s apple breeding program is now screening seedlings and selections for fireblight resistance.

During WSU’s annual field day at Sunrise Orchard, near Wenatchee, this week, Dr. Kate Evans, pome fruit breeder, described her program’s

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Fire blight concerns ease in Medford, Oregon

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  Concerns that fireblight would cause significant damage to this year’s pear harvest in the Medford, Oregon, region have eased in recent days. Fireblight, the contagious bacteria most commonly found in apple

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California growers worry about fireblight

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The generally arid conditions in the Pacific Northwest limit the threat of the disease, which needs warm and moist conditions to become established. Some areas in the Midwest and eastern United States, which have more

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Performance report

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After a year of work, the team of researchers developing Solid-Set Canopy Delivery Systems has issued its first report—and the results look promising.

Control of codling moth and mildew was “not quite as good” as airblast

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