Brown rot surprises cherry growers

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

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  • Bunch rot,  a different beast

Bunch rot, a different beast

  • February 15th, 2012

Michelle Moyer reminds growers who had powdery mildew problems last year to prepare for disease carryover this year. Botrytis bunch rot is a different beast than grape powdery mildew, says Dr. Michelle Moyer, Washington State University viticulture extension specialist. While it’s not a problem [...]

  • 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 [...]

  • 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 [...]

Good Stuff

  • December 1st, 2011

Ty Snyder promoted
C & O Nursery of Wenatchee, Washington, has promoted Ty Snyder to the position of orchard manager. Snyder has worked at the nursery since 2006 and earned an associate degree in agriculture from Wenatchee Valley College. He is managing the company’s Rocky Reach and Grant Road [...]

  • 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 [...]