Brown rot surprises cherry growers

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

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  • Strategies for controlling bacterial spot

Strategies for controlling bacterial spot

  • February 15th, 2012

The O’Henry peach variety is a poster child, highly susceptible to bacterial spot. Symptoms include fruit spots, leaf spots, and twig cankers. Bacterial spot is a serious problem for peach growers in the eastern United States, but no big worry for western growers. This [...]

Growers fear loss of antibiotics

  • February 15th, 2012

The shape of organic apple production in the future could well hinge on decisions made in the next few years about the continued use of antibiotics for control of fireblight.     Two key tenets of organic production are, don’t use synthetic substances and don’t cure a problem [...]

  • Manage resistance at the warehouse

Manage resistance at the warehouse

  • February 15th, 2012

Chang-Lin Xiao recommends that use of Penbotec and Scholar alternate from year to year to preserve their effectiveness against fungal pathogens like this blue mold on a Gala apple. Chang-Lin Xiao Resistance of the blue mold pathogen to the postharvest [...]

New fungicides benefit from lessons of Benlate

  • February 15th, 2012

Fruit growers will have new fungicides this year to help manage diseases as diverse as leaf spot in cherries, scab in apples, and brown rot and scab on peaches.      The new materials are so-called second-­generation succinate dehydrogenase inhibitors (SDHI), similar in action to boscalid, one [...]

Let natural enemies play a role

  • February 1st, 2012

Growers today tend to think that integrated pest management has to do primarily with monitoring pests and scheduling ­pesticide applications.

But that’s not what IPM was envisioned to be at the outset, Dr. Nick Mills, entomologist with the University of California, Berkeley, told growers during the Washington State Horticultural Association’s [...]

  • $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 [...]

  • 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 [...]

  • Research station has organic orchard

Research station has organic orchard

  • December 1st, 2011

Joe Nicholson of New York with a Rubinola tree that shows symptoms of sulfur intolerance.
Geraldine Warner

Britain has only about a dozen serious ­commercial organic growers, estimates Dr. Jerry Cross, who heads the entomology and plant pathology team at East Malling Research.

And East Malling Research is one of them.

The [...]

  • Spray equipment still evolving

Spray equipment still evolving

  • December 1st, 2011

The Raven spray controller has brought major improvements to orchard spraying.
Courtesy Blueline Equipment

A major breakthrough in orchard spray technology in the last decade has been a rate control system that automatically calibrates sprayers during spraying, saving countless gallons of crop protection chemicals. Future spray technologies could include sprayers [...]

  • Precise IPM requires good data

Precise IPM requires good data

  • December 1st, 2011

This Washington State University weather station in Tonasket is part of the AgWeatherNet service, providing growers with detailed environmental data.
courtesy washington state university

More precise integrated pest management practices go hand in hand with accurate weather and environmental data. You can’t have better targeted insect sprays or use predictive [...]

Focusing on tomorrow today

  • December 1st, 2011

Apple, pear, and walnut growers will have several opportunities this winter to learn how to take advantage of natural enemies in their orchards for controlling key pests.

Washington State University entomologist Dr. Vince Jones expects to see a move towards more precise integrated pest management in apples and pears in [...]

  • Research spinoffs result in smarter sprayers

Research spinoffs result in smarter sprayers

  • December 1st, 2011

The variable output nozzles and adjustable louver, developed for this citrus sprayer as part of a specialty crop research project, should soon be available for tree fruit sprayers.

Using autonomous tractors to perform pesticide spraying is possible—and may one day be practical—but given the expense of equipment and liability concerns [...]