Landscape Contractor / Design Build Maintain

SEP 2018

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

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September 2018 11 Oregon Organization Supports Pollinators Insecticide Efficiency in Turf Study at Penn State NJNLA Warns of Spotted Lanternfly Infestation UConn Study on Pollinator Activity MNLA Offers Pesticide Clinics The Oregon Bee Project, a collaboration between the Oregon Department of Agriculture, the Oregon State University Extension Service, the Oregon Department of Forestry and other stakeholders, will partner with the Or - egon Association of Nurseries in the next three years in order to support the growth and installation of pollinator- friendly plants in Oregon. The group is releasing several initiatives to advocate for bee health in their state, which has national ramifications as many professionals from other states find their plantings in Oregon. Andrew Huling, a master's degree candidate in turfgrass entomology from Penn State University, is working with Ben McGraw, associate pro - fessor of turfgrass science, on a two-year long study to determine how successful the residual effects of imidacloprid, a certain insecticide, are in fighting against subterranean white grubs. The results will help develop recommendations on application timing, concentrations, proper soil com - position and watering methods to counteract potential insecticide break- down. So far, the duo has found that imidacloprid concentrations dramati- cally declined in soils collected from sites that used the active ingredient year after year. They are also trying to explain this. The New Jersey counties of Mercer, Warren and Hunt - erton have all been quarantined to help combat the spread of the Spotted Lan - ternfly; a threat to several plants. Fe - males lay eggs on many different objects, includ- ing cars, whose drivers then unwittingly scatter the eggs to the different locations they travel to. The New Jersey Nursery and Landscape Associa - tion recently posted a public service announce- ment video alerting New Jersey residents to an infestation of the pest. To help settle the debate of what attracts more pollinating insects: native plants or cultivated plants, Dr. Jessica Lubell-Brand and Jacob Ricker from the University of Connecticut have been researching pol - linator activity for five native plant species and their cultivars. A sample of their results: • There was no significant differ - ence in insect visitation between A. melanocarpa and its cultivars and C. alnifolia and its cultivars. • Overall, D. fruticosa and its cul - tivar 'Goldfinger,' both of which have yellow flowers, attracted more insects than D. fruticosa 'Pink Beauty,' which has pink flowers. • H. arborescens and P. opulifolius attracted more total insect pol - linators than their respective cultivars. The Michigan Nursery Landscape Association is offering pesti- cide credit clinics starting mid-October and continuing through the beginning of November. There will be two days of sessions at five locations around the state. MNLA members can register at . Nonmembers can register at PHOTO CREDIT: AMY DUKE

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