Brown rot surprises cherry growers

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

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  • Does ARM still work in modern orchards?

Does ARM still work in modern orchards?

  • April 1st, 2011

Penn State entomologist Dr. Larry Hull has spent much of his 35-plus-year career perfecting and advocating a technique called alternate row middle (ARM) spraying for insect control. The technique started in New York, came to Pennsylvania in the 1960s, and quickly caught on and became widely used by growers [...]

  • Drosophila parasitoid found

Drosophila parasitoid found

  • March 15th, 2011

A female wasp attacks a spotted wing drosophila pupa
PhotoS COURTESY OF PETER SHEARER AND PRESTON BROWN, OSU

Scientists at Oregon State University have identified a parasitoid of the spotted wing drosophila, raising hopes that in the future this natural enemy might help control the pest.

It’s a small wasp from [...]

Good Stuff

  • March 15th, 2011

Sweet success
A new series of scab-resistant apples called “Sweet Resistants” developed by the Consorzio Italiano Vivaisti (CIV) in Italy was among the ten finalists for the Fruit Logistica Innovation Award during the Fruit Logistica trade fair in February. The five varieties in the series are Gaia, Gemini, Renoir, [...]

  • Watch out for the good guys

Watch out for the good guys

  • March 15th, 2011

Researchers have been testing different types and colors of traps for monitoring beneficial insects. This white sticky trap, placed next to an insect attractant, caught many lacewings.
Photo by Geraldine Warner

New monitoring tools are providing a window into the biological control taking place in orchards, and it looks like [...]

  • Beekeepers fear loss of forage

Beekeepers fear loss of forage

  • March 15th, 2011

The purple spotted knapweed flower is attractive to bees and a good nectar producer: However, once it gains a foothold, spotted knapweed kills competing vegetation and creates conditions for its own spread.
Photo by James H. Miller, USDA Forest Service, Bugwood.org photo Inset by Marisa Williams, University of Arkansas, [...]

  • Bunch rot strategy for 2011

Bunch rot strategy for 2011

  • March 1st, 2011

PHOTO COURTESY OF CORNELL UNIVERSITY

For Washington grape growers who had a bunch rot problem in 2010, efforts to get rid of any carryover crop are worthwhile, says a New York plant pathologist. Growers should also be prepared to spray a botrytis-specific fungicide during bloom, if weather conditions are favorable [...]

  • Botrytis comes to dry Washington

Botrytis comes to dry Washington

  • March 1st, 2011

Latent infections inside a cluster can take over the bunch by harvest time.
PHOTO COURTESY OF CORNELL UNIVERSITY

Last year’s cool season not only challenged growers and winemakers with slow fruit ripening, it also brought bunch rot to some vineyards, causing significant damage from a lack of disease awareness.

The 2010 [...]

  • 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 [...]

  • 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 [...]