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Posts Tagged: goldspotted oak borer

More trees infested with goldspotted oak borer

When GSOB emerges from underneath bark, they leave "D"-shaped exit holes.
Two more trees in Idyllwild are infested with goldspotted oak borer, reported the Riverside Press-Enterprise yesterday. The announcement came at a community meeting over the weekend, in which Tom Scott, UC Cooperative Extension specialist in the Department of Natural Resources at UC Riverside, and Kevin Turner, UC Cooperative Extension goldspotted oak borer program coordinator, joined fire and forestry officials to brief local residents about the new pest threat in the area.

Residents learned how to examine oak firewood this winter and how watch their black oaks and coast live oaks this spring for signs that they may harbor the insect. Firewood or trees suspected of being infested should be reported to (951) 659-3850, the story said. More information is available at the UC Cooperative Extension GSOB website.

Posted on Thursday, January 24, 2013 at 9:09 AM

Officials enlist mountain residents to battle goldspotted oak borer

Cal Fire, UC Cooperative Extension and other officials will be meeting with residents of Idyllwild tomorrow to enlist their help in stopping the goldspotted oak borers' tree destruction in the picturesque mountain community, reported the Riverside Press-Enterprise.

GSOB appears to have spread to Idyllwild by hitchhiking on firewood from San Diego, where it has killed some 80,000 oak trees. It has been found in only one tree in Idyllwild so far.

Tom Scott, UC Cooperative Extension specialist in the Department of Environmental Sciences at UC Riverside, and Kevin Turner, UCCE goldspotted oak borer program coordinator, will be among the speakers.

Meanwhile, ABC Eyewitness News in Los Angeles interviewed UC Riverside entomologist Vanessa Lopez about an effort to bring in GSOB predators to California from Arizona.

"What we're hoping to do is go to Arizona and find those insects that are specialized to only feed on goldspotted oak borer and they're efficient at controlling the population," Lopez said.

Small size but big destruction, the goldspotted oak borer. (Photo: UC Riverside)
Small size but big destruction, the goldspotted oak borer. (Photo: UC Riverside)

Posted on Friday, January 18, 2013 at 8:34 AM

UC researchers discuss oak health in LA

The goldspotted oak borer continues to threaten oak trees, Tom Scott, area natural resource specialist located at UC Riverside, told participants at conference on sustaining native oak woodlands in Los Angeles, the Monrovia Patch reported.

Scott said there is still a quarantine on moving firewood out of San Diego County to prevent the spread of the damaging insect. 

Reporter Sandy Gillis wrote that Larry Costello, UC Cooperative Extension environmental horticulture advisor emeritus, described the power of oaks to access water deep in the soil.

UC adds 4,584 acres of forest to its research lands

The Los Angeles Times and San Francisco Chronicle reported on UC's acquisition of 4,584 acres of Northern California mixed-conifer forest as part of a PG&E bankruptcy settlement. 

Debra Levi Holtz, who wrote the article for the Chronicle, quoted Keith Gilless, dean of the UC Berkeley College of Natural Resources, which houses the UC Center for Forestry, as saying, "For us, this is a dream come true to have a network of research sites on a north-south transection through the Sierra Nevada and Cascade ranges that will dramatically improve our capacity to do work on forest ecosystems that is responsive to the questions we all have about the impacts of climate change on those regions."

Posted on Monday, November 21, 2011 at 12:07 PM

More sweet potatoes growing in California

Sweet potatoes are extremely heat tolerant, so they can handle Merced County's hot summer days and moderate nights.
Over the last decade, Americans have more than doubled their sweet potato consumption, reports P.J. Huffstutter in the Los Angeles Times. Growth in U.S. per capita consumption, about 6.2 pounds per year, is being driven by the popularity of sweet potato fries. UC Cooperative Extension farm advisor Scott Stoddard told the reporter that most of California's sweet potato farming takes place in Merced County. The crop dates to the 19th century, when Portuguese and Japanese immigrants brought the plant with them. "I've heard about people ripping out grapevines to plant sweet potatoes," Stoddard said. "You have to remember that, at least right now, this is still a specialty niche crop."

A hungry pest is devouring San Diego County oak trees
Tony Perry, Los Angeles Times

The goldspotted oak borer is devouring enormous numbers of oak trees in San Diego County and its devastation could spread to trees throughout California, according to researchers at UC Riverside. "This may be the biggest oak mortality event since the Pleistocene [epoch] 12,000 years ago," UC Riverside natural resource specialist Tom Scott said in a report issued last week. The Times story was prompted by a UC Riverside news release.

Posted on Tuesday, September 6, 2011 at 11:12 AM

UCR scientists battle oak borer with new tactic

Scientists at UC Riverside plan to quarantine goldspotted oak borers and raise them with parasitic insects from Arizona and Mexico in an effort to find an insect that will reduce the oak-killing pest's population in Southern California, according to a San Diego Union Tribune blog.

Writer Lily Leung spoke to UC Cooperative Extension horticulture advisor Vince Lazaneo about the threat the imported pest poses to San Diego area oak trees. Eradication of the goldspotted oak borer beetle, he told her, "will take nothing short of a miracle." The challenge for scientists is trapping the beetle, which is the size of a rice grain and tough for even veteran researchers to find.

GSOB, a native of Arizona and Mexico, was first identified in California in 2004. It has already killed 20,000 trees and is contributing to on-going oak tree mortality on federal, state, private and Native American lands in rural and suburban San Diego County.

For more on the goldspotted oak borer, see the UC Cooperative Extension GSOB website and the UCR Center for Invasive Species Research web page.

GSOB is threating native California oaks.
GSOB is threating native California oaks.

Posted on Thursday, September 23, 2010 at 10:00 AM

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