Research tackles decay issue

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

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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 [...]

  • 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 [...]

  • Watch out for the good guys

Watch out for the good guys

  • March 15th, 2011

Researchers have been testing different types and colors of traps for monitoring beneficial insects. This white sticky trap, placed next to an insect attractant, caught many lacewings.
Photo by Geraldine Warner

New monitoring tools are providing a window into the biological control taking place in orchards, and it looks like [...]

  • Beekeepers fear loss of forage

Beekeepers fear loss of forage

  • March 15th, 2011

The purple spotted knapweed flower is attractive to bees and a good nectar producer: However, once it gains a foothold, spotted knapweed kills competing vegetation and creates conditions for its own spread.
Photo by James H. Miller, USDA Forest Service, Bugwood.org photo Inset by Marisa Williams, University of Arkansas, [...]

  • 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 [...]

Good Stuff

  • March 15th, 2011

Sweet success
A new series of scab-resistant apples called “Sweet Resistants” developed by the Consorzio Italiano Vivaisti (CIV) in Italy was among the ten finalists for the Fruit Logistica Innovation Award during the Fruit Logistica trade fair in February. The five varieties in the series are Gaia, Gemini, Renoir, [...]

  • Bunch rot strategy for 2011

Bunch rot strategy for 2011

  • March 1st, 2011

PHOTO COURTESY OF CORNELL UNIVERSITY

For Washington grape growers who had a bunch rot problem in 2010, efforts to get rid of any carryover crop are worthwhile, says a New York plant pathologist. Growers should also be prepared to spray a botrytis-specific fungicide during bloom, if weather conditions are favorable [...]