Research tackles decay issue

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

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  • 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 [...]

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, [...]

Scab-resistant varieties need protection, too

  • February 15th, 2011

When apple breeders in New Jersey, Indiana, and Illinois came together in 1926 to form the Purdue-Rutgers-Illinois university collaboration called PRI, their ­number-one goal was to create new apple varieties that were scab resistant.

They did it, too, and about 20 resistant varieties have been released. While several varieties have [...]

  • Opportunistic fungi

Opportunistic fungi

  • February 15th, 2011

Disease organisms invade injured tissue and develop cankers that release spores. Some red strains of McIntosh are susceptible, for reasons unknown, to opportunistic diseases that kill branches.
Photos courtesy of george sundin, Michigan State University

Starting in 2006, an epidemic of sorts started in apple orchards in Michigan. It was [...]

Watch for crown gall and vine decline

  • February 15th, 2011

Vineyardists in the Pacific Northwest have been relatively lucky regarding the number of grape diseases they have to worry about. But recent experiences indicate that Washington growers should also watch for diseases associated with vine decline, and crown gall could again be a problem in the state.

In the mid-1990s, [...]

BUYER BEWARE: Certified may not be clean

  • February 15th, 2011

Recent Washington State grower experiences of finding disease in a vineyard planted with certified stock have highlighted the weaknesses of state plant health certification programs and the need for program improvement.

“We thought we had something clean, and we were going down the road thinking we had some nice, clean [...]

  • A program for scab control

A program for scab control

  • February 15th, 2011

Photos courtesy of kerik cox, cornell university

Growers producing apples in the cool, damp northeast quadrant of the United States need to take a step-by-careful-step approach to apple scab control—starting early and being meticulous—or they can be in for a long summer of expensive spraying and still lose part of [...]

Little cherries, little flavor

  • February 15th, 2011

The cool weather of 2010 highlighted a growing concern about little cherries showing up in some orchards. Follow-up testing by Washington State University confirmed that the trees were infected with a dreaded cherry disease that had not been found extensively in Washington before.

“The 2010 spring was very cool, and [...]

Breaking the weed cycle

  • February 1st, 2011

Wapato, Washington, grape grower Mike Sauer has experience with replanting both wine and juice grapes. Wine grapes, when following wine grapes in a vineyard with wide spacing between vine rows, are relatively easy, but Concords following Concords are a ­different problem, he says.

Sauer’s early wine grape vineyards were planted [...]

  • Clean plant material fundamental

Clean plant material fundamental

  • February 1st, 2011

The young vines in grow tubes are replants due to disease-contaminated plant material.

When Tedd Wildman began planting lesser-known red wine grape varieties on Washington State’s Wahluke Slope ten years ago, he was careful to source plant ­material from certified nurseries. But not careful enough.

At the time, certified plant material [...]

  • Spin your weeds away

Spin your weeds away

After years of sitting on a tractor to knock down vineyard weeds with an old grape hoe, only doing about an acre an hour and always causing some vine damage, Dave Kohler finally reached his breaking point. Nearly ten years ago, he’d had enough and was determined to figure [...]

  • Good Stuff

Good Stuff

  • February 1st, 2011

With Come Unglued, there is no need to replace expensive PVC fittings.

Quick PVC pipe fix
Come Unglued is a new tool designed to save time and money when repairing PVC pipes. The tool uses heat to break any PVC cement bond, allowing the user to remove a broken pipe [...]