Brown rot surprises cherry growers

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

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  • Fungicide tools and resistance management guidelines

Fungicide tools and resistance management guidelines

  • May 15th, 2011

As of spring 2011, growers in eastern Washington have several new fungicides at their disposal for managing powdery mildew.

For cherry growers, new products include Adament ­(tebuconazole + trifloxystrobin), Quash (metconazole), and Unicorn (tebuconazole + sulfur).

Four new materials are available for grape growers: Adament, Inspire Super ­(difenoconazole + cyprodinil), Unicorn, [...]

  • Effective, economical weed control

Effective, economical weed control

  • May 1st, 2011

The Wonder Weeder and similar tools deliver orchard weed control at less cost than chemical controls.

The Holy Grail that organic apple growers are looking for is an organically acceptable herbicide that acts like glyphosate or paraquat, but isn’t. Most chemicals that will do that, like vinegar, are expensive because [...]

  • Cutting costs of IPM

Cutting costs of IPM

  • May 1st, 2011

Vince Jones at Washington State University is testing the new Z-Trap, which zaps insects and records when they were trapped. It might be possible to remotely identify the type of insect, also.

The key to integrated pest management is monitoring—knowing what is going on in your orchard.

“Monitoring is very, very [...]

  • Help needed for invasive stinkbug

Help needed for invasive stinkbug

  • May 1st, 2011

Brown marmorated stinkbugs overwinter in protected areas, emerge in April in the mid-Atlantic area, and lay eggs from May through August.

Entomologists in the mid-Atlantic states are still honing their pesticide recommendations so fruit growers will be prepared to battle the brown marmorated stinkbug this season.

While they think growers will [...]

  • Fumigant regulations keep coming

Fumigant regulations keep coming

  • April 15th, 2011

Soil fumigation, like this broadcast application, now requires that fumigation management plans be developed to include a long list of components.

The soil fumigation landscape has changed ­dramatically in the last few years. Effective postplant nematicides have been lost, use of methyl bromide as a soil fumigant is on the [...]

  • Read the label

Read the label

  • April 15th, 2011

Marestail, or horseweed, has been confirmed to be resistant to glyphosate in California.

Have you read your glyphosate herbicide label lately?

Today’s glyphosate herbicide is not the same as it was when first introduced as Roundup by Monsanto more than 35 years ago. Generic glyphosate is made in many countries around [...]

Tips on how to avoid glyphosate damage

  • April 15th, 2011

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, 2011

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, 2011

Among the newer herbicides that fruit growers should look at are Treevix, Alion, Matrix, Spartan, and Sandea, and there are new formulatons 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, 2011

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 [...]

  • Clean plant center has new manager

Clean plant center has new manager

  • April 1st, 2011

James Susaimuthu inspects plant material in the Fruit Tree Clean Plant Center’s greenhouse.

One of the goals of Dr. James Susaimuthu, new program manager of the Fruit Tree Clean Plant Center, is to use his diagnostic skills to find ways to improve virus testing of plant material.

Susaimuthu, with a background [...]