Brown rot surprises cherry growers

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

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Soft spray program for pears

  • September 1st, 2012

Though a no-organophosphate codling moth control program is more expensive at first, it’s not long before growers are saving money, says Bruce Kiyokawa, a pest control advisor with Chamberlin Distributing Company in Hood River, Oregon.

Kiyokawa works with several pear growers who are participating in an areawide codling moth program [...]

Cooperative effort defeats pests

  • September 1st, 2012

An areawide effort to control codling moth without organophosphate chemicals has resulted in better control of both codling moth and pear psylla as well as lower pesticide costs for a group of pear growers in Hood River, Oregon.

Many of them are no longer applying pesticides for either pest during [...]

  • Good Stuff

Good Stuff

  • August 1st, 2012

New cherry sorters

Chelan Fruit Cooperative has about 600 year-round employees, but needs an additional 1,000 packing house workers during the cherry season. It installed a new cherry grader at its Brewster plant this season to reduce its labor needs.

After just a week of working with the new equipment, Rick [...]

  • Focus on soil health

Focus on soil health

  • July 1st, 2012

Apple seedlings grown in soil infested with root-lesion nematodes (on the left) and in soil without nematodes (on the right).

Whenever there is evidence of nematode problems in an orchard or vineyard—such as poor growth or yields—pathogens are usually working in concert with the nematodes, says Dr. Tom Forge, researcher [...]

  • Living with plum pox

Living with plum pox

  • July 1st, 2012

Jim Bittner, pictured with a tour group in his New York orchard, pulled out 20 acres of peaches when a plum pox-positive tree was found in his orchard. He is worried about Canada dropping its eradication effort.
PHOTO BY RICHARD LEHNERT

The question of how plum pox should be ­managed [...]

  • Canadians will reduce pressure to eliminate plum pox

Canadians will reduce pressure to eliminate plum pox

  • July 1st, 2012

In the “usual” journalistic process, reporters find expert sources and ask questions, then ask additional questions as the answers dictate. This process did not work in developing this article.

On both sides of the U.S.-Canadian border, phone calls directed to knowledgeable horticulturists involved in the plum pox programs were shunted [...]

  • Spotlight on apple skin problems

Spotlight on apple skin problems

  • May 15th, 2012

Cracks in the fruit cuticle can form soon after bloom (back), exposing the underlying hypodermal cells to air, stimulating a wound response that results in russet (front).

When apples have bad skin, they’re less appealing to customers, so defective fruit has to be sorted out and diverted to the processing [...]

Steps to manage canker

  • May 15th, 2012

Scientists have developed the following ­integrated approach to manage canker in cherries:

Avoid interplanting new with old trees. Rain can splash inoculum from old trees onto the young, healthy trees.
 Do not use sprinkle irrigation on trees for the first three years. In late summer, reduce the amount of water [...]

  • Not just a raincover

Not just a raincover

  • May 15th, 2012

This Dutch cherry orchard has a rain cover and is enclosed on the sides with netting to keep out insects and birds.
Photo by Geraldine Warner

So-called rain covers for cherries provide benefits far beyond just protecting the fruit from damage by rain or hail, says Reinhard Vöhringer, a German [...]

  • Bacterial canker requires an integrated approach

Bacterial canker requires an integrated approach

  • May 15th, 2012

A canker from the bacteria Pseudomonas syringae has developed in this young cherry tree.
Photo by Ken Johnson, OSU

With copper bactericides failing in some areas to control bacterial canker (Pseudomonas syringae) in cherries, growers will have to adopt an integrated approach, says an Oregon State University plant pathologist.

Bacterial canker [...]

Neonicotinoids and bees

  • May 15th, 2012

A spate of new studies came out this spring, all of them seeking to link neonicotinoid insecticides to mortality in honeybees, bumblebees, and several kinds of native bees, and all of the studies getting wide publicity.

Reaction among agricultural entomologists varied. Some criticized the studies as being scientifically flawed. None [...]

Niche product

  • May 1st, 2012

Sevin (carbaryl) will continue to be available for chemical thinning and pest control in tree fruits, says Dr. Jonathan Akins, director of regulatory affairs with the supplier Tessenderlo Kerley, Inc.

Tessenderlo recently bought Sevin from Bayer CropSciences. Akins said the company heard that rumors had been circulating that Sevin would [...]