Research tackles decay issue

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

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Tips on how to avoid glyphosate damage

  • April 15th, 2012

As you approach weed control this spring, remember the word SUPPLY.

That’s the acronym Dr. Hannah Mathers developed to help orchardists and nurserymen prevent injury to their trees as they go about the process of controlling weeds with herbicides, especially with glyphosate.

The Ohio State University nursery and landscape extension horticulturist, [...]

Tree safety is key issue with herbicides

  • April 15th, 2012

Choosing a herbicide program for an orchard is not so simple as choosing which herbicide kills what weeds and when. A careful reading of the label of any herbicide reveals a host of warnings, most of which deal with tree safety.

Wayne Mitchem, a weed control specialist from North Carolina [...]

Newer herbicides join the arsenal

  • April 15th, 2012

Among the newer herbicides that fruit growers should look at are Treevix, Alion, Matrix, Spartan, and Sandea, and there are new formulations of Sinbar and Rely, says Michigan State University weed control specialist Dr. Bernie Zandstra.

Treevix (saflufenacil) was new last year, introduced by BASF. It has both foliar and [...]

Who’s eating codling moth?

  • April 15th, 2012

This article is part of a series on the multistate project “Enhancing Biological Control in Western Orchards.”

How big a role can predators play in controlling codling moth in fruit orchards? That’s a question that Dr. Thomas Unruh, geneticist with the U.S. Department of Agriculture in Yakima, Washington, wants to [...]

  • Leafroller challenges cherry growers

Leafroller challenges cherry growers

  • April 1st, 2012

Obliquebanded leafroller larva
Ontario Ministry of Agriculture

Tart cherry growers need to use a modern, effective insecticide to control obliquebanded leafroller about two weeks before ­harvest—or risk delivering a contaminated crop that may be rejected by the processor.

That’s the advice of Dr. Nikki Rothwell, the entomologist who coordinates activities at [...]

  • New York apple growers on alert for strep-resistant fireblight

New York apple growers on alert for strep-resistant fireblight

  • April 1st, 2012

Dead terminal shoots on apple trees caused by infection by fireblight bacteria.
COURTESY OF KERIK COX

Apple growers in New York State were not granted the Section 18 emergency use permit they requested from the U.S. Environmental Protection Agency. That would have allowed them to use the antibiotic kasugamycin (Kasumin) [...]

Pests sneak into U.K.

  • April 1st, 2012

Two new pests—the brown marmorated stinkbug and spotted wing drosophila—have snuck into the United Kingdom but are not yet established there.

Two adult brown marmorated stinkbugs were intercepted at a U.K. airport in 2010 in passenger luggage on a flight from the United States, according to a report in the [...]

  • Clinic can diagnose crop ailments

Clinic can diagnose crop ailments

  • April 1st, 2012

Karen Ward runs WSU’s Plant Pest Diagnostic Clinic.

If you find strange rots or spots on your fruit trees or some mysterious ailment, Washington State University’s Plant Pest Diagnostic Clinic is ready to help out.

Karen Ward, clinic coordinator, accepts plant samples for diagnosis of diseases and disorders. The clinic, based [...]

Stinkbug watch

  • April 1st, 2012

Entomologists in New York State developed a clever way of keeping an eye out for inroads by the brown marmorated stinkbug. It’s been found across the state. So far, however, numbers have stayed small, and, as far as is known, no fruit growers have needed to spray to suppress [...]

  • Organic control for flea weevil

Organic control for flea weevil

  • March 15th, 2012

Damage by apple flea weevil.
Matt Grieshop­­­

Organic apple growers in the Midwest appear to have a relatively simple solution to their problems with apple flea weevil, which appeared suddenly as a problem in Michigan two years ago and took out 90 percent of the fruit in some orchards.

The best [...]

  • New pests threaten Washington grapes

New pests threaten Washington grapes

  • March 1st, 2012

Doug Walsh, holding a mealybug pheromone trap, says that such traps have been used throughout the state to look for vine mealybug. Thus far, the destructive pest that’s prevalent throughout California grape regions, has not been found in Washington.
Melissa Hansen

While exotic and invasive pests threaten grape industries in [...]

  • Trapping for grape mealybug

Trapping for grape mealybug

  • March 1st, 2012

Brian Bahder transfers a first-instar grape mealybug from a grapevine leafroll-diseased Concord vine to a healthy Concord vine to assess mealybug competency as a vector.
Melissa Hansen

With the insidious spread of grapevine leafroll disease in Washington State vineyards, Washington State University scientists have worked to help growers better detect [...]