Brown rot surprises cherry growers

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

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  • 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 [...]

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 [...]

  • 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 [...]

  • 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 [...]

  • How to manage scab and mildew

How to manage scab and mildew

  • April 1st, 2011

Powdery mildew appears as superficial, white powdery growth on leaves and shoots that results in the stunting and distortion of young growth. Right: ruit like this Jonathan apple, when infected with powdery mildew, are stunted and russetted, and fruit set may be reduced.
BRITISH COLUMBIA MINISTRY OF AGRICULTURE

A good [...]

ARM studied in cherries

  • April 1st, 2011

In the cherry orchards of northwest Michigan around Traverse City, growers use a mixture of methods to control their archenemies: cherry fruit fly, plum curculio, and cherry leaf spot.

Some growers use airblast sprayers while others use air-curtain sprayers. Some run their sprayers down the middle of every tree row [...]

  • 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 [...]