• Mildew resistance quest continues

Mildew resistance quest continues

  • December 1st, 2011

Next year, Nnadozie Oraguzie will begin field testing a new generation of mildew-resistant sweet cherry selections as he works to combine disease resistance with high fruit quality traits.
Courtesy of Washington State University

While there is keen grower interest in development of cherry varieties resistant to powdery mildew, the resulting [...]

  • Pest help at your fingertips

Pest help at your fingertips

  • December 1st, 2011

Andy Kahn can use his iPhone to access WSU’s Decision Aid System, which automatically uploads weather data from the AgWeatherNet and provides pest predictions and control recommendations.

Washington State University’s online Decision Aid System has made life easier for integrated pest management consultant Andy Kahn of Wenatchee. He can log [...]

  • $60-million boost

$60-million boost

  • December 1st, 2011

A mechanical harvester is part of a major research project relating to production and marketing of stem-free sweet cherries.

More than $60 million dollars in grants have been awarded so far through the Specialty Crop Research Initiative specifically for research ­projects in tree fruit and grapes.

This is the fourth year [...]

  • Grape industry goes after viruses

Grape industry goes after viruses

  • December 1st, 2011

Grapevine leafroll disease is easy to diagnose in red varieties, like this Cabernet Sauvignon vine, but more difficult in white varieties where the only symptom might be downward curling of leaves.

The Washington grape industry has put a bull’s-eye on grape viruses and diseases and is going after its target [...]

  • Sticking with pears

Sticking with pears

  • September 1st, 2011

Rood built this platform especially for removing fireblight strikes. Controls let him steer, brake, clutch, shift gears, and control acceleration. Shears or saw on a long pole are powered by air.
Richard Lehnert

There was a time when Michigan rivaled Oregon for third place in U.S. pear production, but a [...]

  • Good Stuff

Good Stuff

  • August 1st, 2011

Jack Everhart, left, New Holland, Inc., congratulates John Riel, right, of Burrows Tractor.

Recognition for Burrows
The New Holland dealership Burrows Tractor, Inc., in Yakima, Washington, has earned membership to New Holland’s President’s Club in recognition of outstanding achievement in business facilities, management, sales, parts and service support, and customer [...]

Fast, easy test reveals fungicide resistance

  • July 1st, 2011

When disease organisms become resistant to a fungicide, spraying is like hitting them with rainwater—expensive rainwater.

In the last three years, Georgia and South Carolina peach growers have saved money from what would have been wasted sprays and lost fruit caused by fungicide-resistant brown rot—thanks to a Profile kit developed [...]

  • Virus-free peach trees

Virus-free peach trees

  • July 1st, 2011

Simon Scott moves plants at the Musser Fruit Research Farm’s greenhouse, where about 300 trees of a hundred low-chill cultivars will be grown.
Richard Lehnert

Until plum pox virus (PPV) appeared in Pennsylvania peach orchards in 1999, many peach growers took a pretty casual view of viruses—living with them and [...]

  • Peaches on ridges

Peaches on ridges

  • July 1st, 2011

Impressed by early research results, Titan Farms planted 200 acres of peaches on ridges to try out this new approach to Armillaria root rot.
Richard Lehnert

Since coming to Clemson University in 2000, Dr. Guido Schnabel has been taking on the two big disease problems that plague peach growers in [...]

  • 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, [...]

  • 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 [...]