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11 trees cut after falling victim to pests that slurp sap

first_imgVALENCIA – Eleven eucalyptus trees lining McBean Parkway were axed Monday because city arborists were no match for a tiny but vigilant pest that had attacked them. The bugs have hastened the demise of hundreds of eucalyptus trees around Santa Clarita, including three mature trees in this stand. “These are mature beautiful trees. We’re as heartbroken as the residents who enjoy them,” said Dennis Luppens, a management analyst for the city. Luppens said 10 of the trees will be replaced with eucalyptus. Arborists were unable to save the sick trees. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREWalnut’s Malik Khouzam voted Southern California Boys Athlete of the Week “They’re very heavy and they pose a threat to motorists, residents and nearby homes,” Luppens said. “They can lose a heavy branch with no warning.” Redgum lerp psyllids suck the sap from eucalyptus leaves through mouths that resemble straws, causing the leaves to fall. Young members of the aphid-like species live under small scaly white shells they secrete of wax and honeydew, called lerps. Substantial shedding can threaten the health of infested eucalyptus trees and may increase their vulnerability to other pest invasions or diseases. Some eucalyptus species are preferred by the insects, others are shunned. Mature insects are light green with orange and yellow splotches, and grow to about one-eighth of an inch long. Since the redgum lerp psyllid was first detected in Los Angeles in 1998, the species has afflicted trees across the state. The pests, which originated in Australia, have taken up residence in Florida and Mexico. A systemic insecticide called Merit had been sprayed on the trees in an attempt to control the pests, said Chris Palmieri, a project development coordinator with the city. He said it has been mostly successful when used annually to boost the trees’ immunity. Palmieri said eucalyptus trees are not protected and residents can opt to down them rather than opting for treatments, which can be expensive. “The city has the funds to treat the trees and save them,” he said. Scientists suggest there are other alternatives. A University of California at Berkeley professor introduced a small wasp that has been very helpful in reducing the lerp population up and down the state, said Timothy Paine, an entomologist at the University of California, Riverside. “It only attacks the redgum lerp psyllid and stays in its environment,” he said. “It has been successful in many places in Southern California. It surprises me the city is in the process of taking out eucalyptus.” He said the wasps establish themselves in the environment, and their populations rise and fall with that of their prey. “It’s management for free now,” he said of the biological control. His colleague at the University of California, Davis concurred. “Merit is not a bad strategy, but it may be a costly one,” said Rick Roush, the director of UC Davis’ Integrated Pest Management Program. He said Merit is pretty effective and seems to be fairly benign. “They may save money using biological control agents,” he said. Roush has lived in Australia, the lerps home base. He said the pests are not very common there, where they are controlled by their natural enemies. Aborigines and kids there often snacked on the insects – he said he sometimes eats the honeydew-sweet insects in Davis. He said the predator wasps do not sting people. “They have sort of a laser bright specificity. They’re very effective,” he said. The city has used “good” bugs to go after bad in other cases, but Palmieri said officials were satisfied with the pesticide being applied. Judy O’Rourke, (661) 257-5255 [email protected] 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!last_img read more

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Forrester Predicts One-Third of U.S. Consumers Will Be Tablet Users by 2015

first_imgaudrey watters In tweaking its prediction, Forrester says it has changed some of its assumptions around replacements rates that “we think will be closer to that of MP3 players or iPhones than to that of PCs.” Calling these “lifestyle devices,” Forrester says it thinks people will more readily purchase replacements and upgrades than they would for a “utilitarian device” like a PC.Do you agree with Forrester’s new figures? Still too conservative? Or has Forrester overestimated the tablet’s future success? Tags:#news#NYT#web Related Posts Why Tech Companies Need Simpler Terms of Servic… Forrester Research has published a revised forecast for the U.S. consumer tablet market today, noting that its initial predictions from last year were “too conservative.” Indeed, Apple’s introduction of the iPad changed the game, so to speak, for tablet adoption, and many people are predicting 2011 – or least CES – to be replete with tablet-related announcements.Forrester has revised its forecast upward to 10.3 million units for 2010 and says that it expects sales to more than double in 2011 to 24.1 million units. Of these sales, most will be iPads, as Forrester predicts Apple’s dominance over the tablet market will continue through 2012. Top Reasons to Go With Managed WordPress Hosting A Web Developer’s New Best Friend is the AI Wai… 8 Best WordPress Hosting Solutions on the Marketlast_img read more

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