Research tackles decay issue

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

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  • Will the new pest go after grapes?

Will the new pest go after grapes?

  • March 1st, 2011

Grape growers learn to identify spotted wing drosophila at a Washington State Grape Society meeting.
Photo by Melissa Hansen

Preliminary tests conducted last fall indicate that Washington State grapes might not be attractive to the spotted wing drosophila, an invasive new pest that has popped up across much of U.S. [...]

  • Cougarblight model updated

Cougarblight model updated

  • March 1st, 2011

Washington State University is working to help growers be better prepared to fight fireblight.

Washington State University’s Cougarblight model is being updated to improve its ability to predict when conditions are conducive to fireblight.

The model uses information on temperature, wetness, and presence of fireblight bacteria to predict infections and was [...]

  • Sap beetles attacked Michigan cherries

Sap beetles attacked Michigan cherries

  • March 1st, 2011

The strawberry sap beetle was one of three species identified in cherry orchards. The other two were dusky and picnic sap beetles.
Photo by Stephen Luk

Cherry growers around Traverse City, Michigan, were plagued last season by an unusual attack of sap beetles. Three species of them were found, all [...]

  • Obliquebanded leafroller bugs tart cherry growers

Obliquebanded leafroller bugs tart cherry growers

  • March 1st, 2011

Leafroller larvae form webs and use them to curl leaves into protective structures.
Photo Courtesy Of Washington State University

Obliquebanded leafroller has been increasing as a problem in tart cherries in recent years, where the black-headed green larvae are a highly undesirable contaminant at harvest time in July.

Entomologist Dr. Nikki [...]

  • Stinkbugs on the move

Stinkbugs on the move

  • March 1st, 2011

Adult brown marmorated stinkbugs feed on ripe peaches, a preferred fruit.

A monitoring trap in a commercial apple orchard drew large numbers of bugs. Some traps attracted 2,000 bugs.

The brown marmorated stinkbug, Halyomorpha halys, is rapidly becoming more than a nuisance, a curiosity, and a bug with a funny name. [...]

  • Researchers tackle apple weevil

Researchers tackle apple weevil

  • March 1st, 2011

Small and black, the apple flea weevil looks a bit like its larger snout beetle relative, the plum curculio.
Photo by matt grieshop, michigan state university

A coalition of partners in four Midwestern states has applied for grant funding to respond to three new insect threats—spotted wing drosophila, brown marmorated [...]

  • Defense strategies

Defense strategies

  • March 1st, 2011

Brown marmorated stinkbug nymphs develop through five instars, all feeding on fruit. Nymphs and adults cause both external and internal injury.
Photo by Tracy Leskey

One of the easier ways of monitoring the brown marmorated stinkbug’s invasion status is by listening to homeowner complaints, says Dr. Tracy Leskey, the U.S. [...]

  • Rainfastness of pesticides varies

Rainfastness of pesticides varies

  • March 1st, 2011

John Wise carries out his rainfastness work on grapes and apples at Michigan State University’s Trevor Nichols Research Complex, where he is coordinator of research.

Folklore says that after a heavy rainfall, you might as well get your sprayer out and reapply your insecticides. For those old twentieth century ­wettable [...]

  • Grower battles bug

Grower battles bug

  • March 1st, 2011

PHOTO BY TRACY LESKEY

Gerrardstown, West Virginia, apple grower George Behling is one very concerned grower. He first saw this stinkbug two years ago, but didn’t distinguish it at first from ordinary stinkbugs, which have been a pest on his York apples over the years. This last year, the distinction [...]

Buffers would make orchards vulnerable

  • March 1st, 2011

If no-spray buffers proposed by the U.S. Environmental Protection Agency go into effect, orchardists will be unable to use critical pesticides on a large proportion of their acreage, including products that will be necessary to control new, invasive pests.

The agency is proposing a 500-foot buffer alongside all flowing water [...]

  • Ready for drosophila

Ready for drosophila

  • March 1st, 2011

Spotted wing drosophila larvae that hatch from eggs inside the fruit sometimes pop out and walk around on the surface. The spotted wing drosophila can pupate inside the cherry, outside the cherry, or halfway out.
PHOTOS BY ELIZABETH BEERS, WASHIHINGTON STATE UNIVERSITY

The Washington tree fruit industry should be better [...]

Tackling scab resistance

  • February 15th, 2011

Apple growers in the Midwest who stuck by the “old ways” of applying fungicides have not faced the problem of apple scab becoming resistant to fungicides. The old ways employed protectant fungicides like captan and ­mancozeb; the new ways used curative chemistries.

Now what should growers do? Dr. Janna Beckerman, [...]