Brown rot surprises cherry growers

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

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  • Good Stuff

Good Stuff

  • February 15th, 2013

Hydroponic irrigation
New technology combining hydroponics and drip irrigation is being used to grow fruit trees, offering benefits to orchardists in water-starved regions. The Hydroponic Irrigation Adaption System or HIAS, has been patented by Jorge Labrador Agustin of Jormar Fruits, a Spanish company with 30 years of tree fruit [...]

  • 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 [...]

  • Identifying grape shrivels

Identifying grape shrivels

  • February 15th, 2013

In the past, grape growers have mistaken any shrivel in their fruit for grape berry shrivel, also known as sour shrivel, says Washington State University’s Dr. Bhaskar Bondada. In a panic, some were needlessly thinning clusters to remove what they thought were berries afflicted with sour shrivel.

It’s important to [...]

  • Fireblight is native to North America

Fireblight is native to North America

  • February 15th, 2013

Fireblight is a plant disease of apples and pears caused by the bacterium Erwinia amylovora. It is native to North America where it resides in wild hosts such as crab apple and hawthorn. Over the decades, it has spread to other pome fruit producing regions in Europe, the Middle [...]

  • Enhancing biocontrol

Enhancing biocontrol

  • February 1st, 2013

Knowing when and where natural enemies, such as the green lacewing, are active is critical in order to conserve them. Large inset: Garden orb web spider in apple orchard. Small inset: Adult ladybug feeding on aphids.

This is the first article in an eight-part series highlighting results of a five-year [...]

  • Last Bite

Last Bite

  • January 15th, 2013

1.    Which of the following is not a tree fruit disease?
a.    Black rot
b.    Blue mold
c.    White rot
d.    Pink rot
e.    Coral rot
f.    Gray mold
2.    Which of the following is not a fungicide?
a.    Topguard
b.    Centaur
c.    Nordox
d.    Regalia
3. [...]

  • Eradication not likely

Eradication not likely

  • December 1st, 2012

The light brown apple moth is about a quarter of an inch long.
PHOTO BY R. ANSON EAGLIN, USDA APHIS

State and federal officials, and growers and homeowners, in California have settled in for a long, contentious battle with light brown apple moth, an invasive leaf-rolling insect found there since [...]

  • Sterile insects get a boost

Sterile insects get a boost

  • November 1st, 2012

In 1959, the very nasty flesh-invading screwworm fly was eradicated from Florida using a new kind of technology called SIT—Sterile Insect Technique.

Since then, the technology has been widely used. It is effective against fruit flies. It’s also being tested against malaria-carrying mosquitoes and against tsetse flies that cause sleeping [...]

  • Research project tackles trunk diseases

Research project tackles trunk diseases

  • November 1st, 2012

Researchers will use nearly $1.8 million in grant money to develop new detection, extension, and research tools for managing wood-canker diseases of grapes and nut crops. Wood-canker diseases are a leading cause of vineyard and orchard removal in many parts of the country.

The research project was one of 14 [...]

  • Yeast tested as lure

Yeast tested as lure

  • November 1st, 2012

A species of yeast that University of California scientists have found in cherries and raspberries infested by the spotted wing drosophila could play a role in developing better lures to detect the pest.
The spotted wing drosophila, a pest that originated in Asia, first invaded ­California in 2008. If [...]

B.C.’s Sterile Insect Release program evolves

  • November 1st, 2012

In sterile insect release, male insects made sterile by exposure to gamma radiation are released in huge numbers to compete with normal wild males. When the sterile males win the mating game, females lay infertile eggs.

In mating disruption, female sex hormones are released in such volume that males can’t [...]

  • Seaweeds tested for pest control

Seaweeds tested for pest control

  • November 1st, 2012

Seaweed extracts are typically used by growers with the aim of improving tree growth and enhancing fruit yields and quality. Although the extracts are regulated and marketed as plant growth regulators, entomologists have been studying whether the products could also have benefits in terms of pest control.

Results of a [...]