Research tackles decay issue

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

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  • Natural enemy inventory

Natural enemy inventory

  • February 15th, 2013

Herbivore-induced plant volatile (HIPV) lure to attract natural enemies in orchards.

Monitoring is one of the key components of any successful integrated pest management program, because it provides a window into what is going on in an orchard. This is true not only for pests but also for natural enemies. [...]

  • Behind the scenes at the NOSB

Behind the scenes at the NOSB

  • February 15th, 2013

Harold Austin

In April, the National Organic Standards Board will decide whether organic apple and pear growers in the United States will be allowed to use the antibiotic oxytetracycline beyond the next two seasons. Tetracycline antibiotics are produced synthetically, but have an organic exemption that will expire in October 2014, [...]

  • Fireblight-resistant apple

Fireblight-resistant apple

  • February 15th, 2013

Ladina, a new high-quality apple variety with low susceptibility to fireblight and mildew, has been developed by a Swiss research station. The variety is also scab resistant. Ladina, bred at the Swiss federal research institute Agroscope­ ­Changins-Wädenswil, comes from a cross of Topaz and Fuji made in 1999. The [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • Growers have several choices in fireblight control

Growers have several choices in fireblight control

  • February 15th, 2013

Pear and apple orchardists have a fairly broad field of products to use in controlling fireblight—and it should get even more crowded in the coming year with new registrations anticipated, says an Oregon State University plant pathologist.

Several new products have registrations pending and could be registered in 2013, said [...]

  • 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 [...]

  • Fireblight, antibiotics, and the NOSB

Fireblight, antibiotics, and the NOSB

  • February 15th, 2013

Antibiotics have long been key disease control materials for fireblight, one of the few uses of antibiotics in plant agriculture. These materials are natural compounds produced by naturally occurring soil microorganisms. For the past several decades, the most common control for fireblight has been the use of antibiotic sprays [...]

  • 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 [...]

  • 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 [...]