Research tackles decay issue

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

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  • A new tool for IPM

A new tool for IPM

  • March 1st, 2013

In recent years, the use of insect models has become an important tool in pest management. Current models help predict key seasonal events in a pest’s life history, such as adult emergence or egg hatch. Pest managers can use this information to better time monitoring activities or the application [...]

  • One last Guthion spray

One last Guthion spray

  • March 1st, 2013

Fruit growers in Michigan can use existing stocks of the insecticide azinphos-methyl (Guthion) one more time before it is phased out at the end of September this year. When should they use it?

Michigan State University tree fruit entomologist Dr. Larry Gut suggests they target flies—the apple maggot in the [...]

  • For the birds

For the birds

  • March 1st, 2013

Preliminary estimates of bird damage to fruit crops made during 2012 show what fruit growers already know: Fruit production can be for the birds—at least a good part of it.

The estimates were made in the Pacific Northwest, New York, and Michigan as part of a $2 million project funded [...]

  • Stinkbug is strong flier

Stinkbug is strong flier

  • March 1st, 2013

The stinkbug injects saliva into the fruit and then sucks out the juice, causing brown areas in the flesh that can resemble bitter pit.
PHOTOS BY NIK WIMAN, OREGON STATE UNIVERSITY

The brown marmorated stinkbug continues to spread, coming alarmingly close to commercial fruit-producing regions of the Pacific Northwest, and [...]

  • Good to Know: New traps and lures for tree fruit pests

Good to Know: New traps and lures for tree fruit pests

  • March 1st, 2013

Generations of growers have monitored the key pests in their orchards. Over the years, traps and lures available to growers have evolved. Yet, the goal has always been to develop easy-to-use, sensitive, and selective trapping systems. Sorting through pails baited with fermenting fruit juice filled with a writhing mass [...]

Last Bite: Do you know your pests?

  • March 1st, 2013

1    In which plant has the brown marmorated stinkbug been most commonly found in Oregon?
a.    Tree of heaven
b.    Hop
c.    Cherry
d.    Holly
e.    Grape

2    Which of the following features cannot be used to distinguish spotted wing drosophila from the common fruit fly?
a.    Dark bands on [...]

Bug pheromone studied

  • March 1st, 2013

In tree fruit pest management, most monitoring and mating disruption technologies are based on phero­mones that female insects release to attract males. For example, sex pheromones are used to lure male codling moths to traps or in order to mimic females and confuse the males to reduce their chances [...]

  • Bacterial canker

Bacterial canker

  • March 1st, 2013

The weather turned hot and dry—­conditions conducive to healing the cuts without making the canker situation worse. Then, the recommended approach was to make two fall sprays of copper, with two more copper sprays recommended before bud break this spring.
12 STEPS TO MANAGE BACTERIAL CANKER
In Oregon, bacterial [...]

  • Turning on a plant’s defenses

Turning on a plant’s defenses

  • February 15th, 2013

New technology is coming to the apple and pear industry to help control fireblight. Actigard is a systemic compound with a unique mode of action that mimics the natural systemic-activated resistance response found in many plants. When applied preventatively, much like vaccinations are given to humans to ward off [...]

  • Last Bite

Last Bite

  • February 15th, 2013

1  Which of the following is not a fruit symptom of little cherry disease?
a.    Small size
b.    Poor color
c.    High acids
d.    Poor shape

2    Which of the following rootstocks is not resistant to fireblight?
a.    Geneva 41
b.    Budagovsky 9
c.    PiAu-56-83
d.    Malling 26

3     What [...]

  • Coppers are a fit for organics

Coppers are a fit for organics

  • February 15th, 2013

Before the 1960s, there were no antibiotics to help orchardists control fireblight, one of the most destructive diseases of pears and apples. Copper materials were the mainstay back then.

But coppers are returning as fireblight control products, particularly for organic orchardists. Oxytetracycline, an effective antibiotic, could lose its place on [...]

  • An expensive disorder

An expensive disorder

  • February 15th, 2013

Photos courtesy of Bhaskar Bondada

A shrivel is not just a shrivel.

Of the various types of shrivel impacting grape quality, sour shrivel is especially unwanted because it renders the fruit unsuitable for winemaking.

The disorder, found in vineyards around the world, is known by several names. In California, researchers have begun [...]