Research tackles decay issue

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

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  • 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, [...]

  • 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 [...]

Rootstock effects on wine are minor

  • February 1st, 2011

Despite the discovery near Kennewick in 1894 of the destructive grapevine root pest phylloxera, the vast majority of Washington State’s vineyards continue to be planted to wine and juice grapes grown on their own roots. While juice grapes are relatively tolerant of the insect, European wine grapes can succumb [...]

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 [...]

  • Small orchards, but big impact

Small orchards, but big impact

  • January 15th, 2011

South Tyrol extension advisor Bernhard Botzner shows the concrete poles used for trellis supports.

Published January 15, 2011
Don’t let the small size fool you. Individual apple orchards near Merano, in Italy’s Vinschgau Valley, may only be a few acres in size, but the valley has trees planted wall to [...]

Italian extension service is well funded

  • January 15th, 2011

Published January 15, 2011
The South Tyrol Advisory Service performs many of the same services that Cooperative Extension does in the United States—educating growers about integrated pest management, irrigation, fertility, and nutrition. The biggest difference is funding.

The budgets of Cooperative Extension in the United States are often squeezed when [...]

  • Electric vehicle has power

Electric vehicle has power

  • December 1st, 2010

Karen Lewis and Gwen Hoheisel (standing) demonstrate how an electric utility vehicle can be used for herbicide spraying with the WeedSeeker technology.

Karen Lewis and Gwen Hoheisel, Washington State University Extension educators, say an electric all-terrain vehicle that they’re evaluating has met or exceeded all their expectations in research plots.

The [...]

  • Tree IVs?

Tree IVs?

  • December 1st, 2010

This injector was tested with apple trees.

Might the airblast sprayer in the future be replaced by IV tubes jabbed in fruit trees?

Michigan State University entomologist Dr. John Wise decided to see if he could control apple insects by injecting insecticides into the tree trunk—much as landscapers now do with [...]

  • Is drosophila a Washington State resident?

Is drosophila a Washington State resident?

  • October 1st, 2010

Entomologists in the Pacific Northwest intend to find out how well the spotted wing drosophila can survive the region’s cold winters.

The pest, a native of Asia, was first seen in ­California in 2008. It was found in Oregon and British Columbia in 2009, and turned up in eastern ­Washington [...]