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Controlling the stinkers

Strides have been made against brown marmorated stinkbug.

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Multi-row sprayers offer great improvements in timeliness

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As more growers move toward modern, high-density planting systems to improve yield and orchard management, the sprayer output needs to be matched to the modern canopy. The closely planted trees of today’s modern orchard require

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Prune out dead crab apple tissue

Reduce disease risk by pruning crab apple trees.

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Research tackles decay issue

A new project will focus on controlling decay and finding pollinizers that are not disease hosts.

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Chose plant material wisely

Ste. Michelle Wine Estates will plant nematode-resistant rootstocks for the first time in Washington on a small scale.

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Trunk diseases are a growing problem

Dirty plant material blamed for vine decline in Canada and California.

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Inmates help with grape research

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Most spider mite research projects involve the tedious work of counting spider mites—peering down a microscope to count tiny specks on leaves.

Some would even call it cruel and unusual punishment. But a Washington State University

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New spider mite found in Washington

Willamette spider mite has been detected for the first time in Washington grapes.

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OSU hopes to fill David Sugar’s research position

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Growers and other stakeholders will meet on September 9 at Oregon State University’s Southern Oregon Research and Extension Center near Medford to discuss how a plant pathology research position might be filled.

Dr. David Sugar, who

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Eastern growers plant new pear

Canadians are planting fire blight-resistant Harovin Sundown at high densities using biaxis trees.

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Native plants attract beneficial insects

David James hopes to expand his research to more vineyards.

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The increasing problem of yellow jackets and hornets

If yellow jackets and hornets seem more of a problem these days, it’s not your imagination.

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Washington apple producers hope to resume exports to China

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After being shut out of China for two seasons, some Washington apple producers will likely try to comply with a new, more onerous export protocol in an attempt to ship some Red and Golden Delicious

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What makes peach trees tick?

Ted DeJong has spent a career finding answers to that question.

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Fresh Cab repels rodents

for indoor use to control mice and rats without poisons

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Scientists work on paper-wasp lure

Though often confused with yellowjackets, paper wasps do not respond to the same bait.

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Fourth cherry residue test results are available

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For the fourth consecutive year, the Washington Tree Fruit Research Commission has conducted a trial to provide the Northwest cherry industry basic information about residues of commonly used pesticides.

These studies are intended to help growers

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WSDA resumes traps to watch for moths that harm grape fields

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The Washington State Department of Agriculture has resumed setting traps to detect any presence of four species of moths destructive to grape fields, according to the Washington Association of Wine Grape Growers (WAWGG).

The statewide watch

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Leafroll virus is costly

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Grapevine leafroll virus is very costly to growers, studies in major wine-grape-growing regions show.

Economists in New York, California, and New Zealand have looked at the costs of leafroll virus in recent years and all found

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The lure of a better fly trap

USDA researchers identified specific volatiles that attract spotted wing drosophila.

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Drosophila is here to stay

Better traps should help growers determine when to spray for spotted wing drosophila.

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Season-long mildew control?

A build-up of spores after harvest can increase disease pressure the next year.

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SWD bugs California growers

In California’s climate, spotted wing drosophila thrives during the winter.

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Michigan growers wary of spotted wing drosophila

A trapping program is vital so growers know where the spotted wing drosophila is and when.

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Merivon labeled in New York

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Merivon fungicide has been registered for use on pome and stone fruit in New York. In field trials, it has controlled diseases such as apple scab and powdery mildew in pome fruit and brown rot

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New pest has racing stripes

The African fig fly, a relative of the spotted wing drosophila, is bigger and more competitive.

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New grape virus in Washington

Don’t assume that red leaves mean grapevine leafroll virus — they could be symptoms of a new disease.

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Pear growers have a strategy for pest management

A new pear pest management plan underlines the need for smaller trees and more efficient systems.

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Destined for export: Understanding pesticide residue policy

It is a large international regulatory body with inherent inertia.

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How much pheromone for codling moth?

Researcher finds codling moths need much less perfume to disrupt their mating.

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Growers advised to prune crab apples (VIDEOS)

Dealing with Manchurian crab apple postharvest storage diseases

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Nematode management strategies

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Preplant soil fumigation has long been an effective way to control nematodes, but fumigation in the future may be limited, says Dr. Inga Zasada, U.S. Department of Agriculture scientist.

She offers the following suggestions to help

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Nematode-resistant rootstocks available

Improved rootstocks are available, though more field testing is needed.

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New approach needed for nematodes

Avoid white varieties if planting in a site with root knot nematodes.

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Cornell asks growers for info on stinkbugs affecting crops

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Cornell University, New York, is asking growers to complete an online survey of how stinkbugs are affecting crops.

The university is surveying growers to assess the impact of the brown marmorated stinkbug on crops and is

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New clothing material may better protect workers

Study looks at lightweight, Teflon-like material might have potential for protective clothing for pesticide applicators.

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Prevention is best strategy

Mites continue to develop resistance to new miticides.

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New biofumigant registered

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A soil biofumigant developed for both conventional and organic farms offers a new tool in what is becoming an increasingly restrictive practice.

Soil fumigation helps eliminate soil-borne diseases, replant problems, nematodes, and weeds, and gets perennial

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New herbicide — resistant crops

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Both Dow Agrosciences and Monsanto Company expect to have new herbicide-resistant crops and new herbicides available in 2015.

Dow is developing Enlist corn, which is resistant to both 2,4-D and aryloxyfenoxyproprionic acid herbicides used to control

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Four reasons to manage the orchard floor

Several forces at work suggest that orchardists should look more closely at how they manage the floors of their orchards and vineyards.

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DriftWatch grows

pecialty crops growers, especially those who grow grapes, will have new cause for concern in 2015 when new genetically modified field crops are expected to come to fields near their orchards and vineyards.

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Managing orchard weeds

Fruit growers are always looking for better, cheaper ways of controlling vegetation under the trees in their orchards, but, in general, weed control gets more expensive and more complicated.

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Chlorosis in Concords

Dr. Joan Davenport is looking for cost effective treatments for chlorosis in Concord grapes.

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Herbicide-resistance raises concerns

Specialty crops growers, especially those who grow grapes, will have new cause for concern in 2015 when new genetically modified field crops are expected to come to fields near their orchards and vineyards.

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Managing Honeycrisp nutrition

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Balancing the crop load is particularly important with Honeycrisp, which is more susceptible than other apple varieties to problems involving mineral nutrition.

The fruit disorder bitter pit, which is associated with low calcium levels, can be

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Wine grape yields not affected by early leaf removal

Early leaf removal in white grape varieties has several benefits.

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Control psylla early

Returning winterforms are more susceptible to pesticides than they were in the fall.

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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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