242 Redmond and Potter: Acelepryn Control of Horticultural Pests Arboriculture & Urban Forestry 2017. 43(6):242–256 Chlorantraniliprole: Reduced-risk Insecticide for Controlling Insect Pests of Woody Ornamentals with Low Hazard to Bees Carl T. Redmond and Daniel A. Potter Abstract. Landscape professionals need target-selective insecticides for managing insect pests on flowering woody orna- mentals that may be visited by bees and other insect pollinators. Chlorantraniliprole, the first anthranilic diamide insec- ticide registered for use in urban landscapes, selectively targets the receptors that regulate the flow of calcium to control muscle contraction in caterpillars, plant-feeding beetles, and certain other phytophagous insects. Designated a reduced- risk pesticide by the United States Environmental Protection Agency, it has a favorable toxicological and environmental profile, including very low toxicity to bees and most types of predatory and parasitic insects that contribute to pest sup- pression. Chlorantraniliprole has become a mainstay for managing turfgrass pests, but little has been published concern- ing its performance against the pests of woody ornamentals. Researchers evaluated it against pests spanning five different orders: adult Japanese beetles, evergreen bagworm, eastern tent caterpillar, bristly roseslug sawfly, hawthorn lace bug, ole- ander aphid, boxwood psyllid, oak lecanium scale (crawlers), and boxwood leafminer, using real-world exposure scenarios. Chlorantraniliprole’s efficacy, speed of control, and residual activity as a foliar spray for the leaf-chewing pests was as good, or better, than provided by industry standards, but sprays were ineffective against the sucking pests (lace bugs, aphids, or scales). Basal soil drenches in autumn or spring failed to systemically control boxwood psyllids or leafminers, but autumn drenches did suppress roseslug damage and Japanese beetle feeding the following year. This study indicates that chloran- traniliprole can be an effective component of integrated pest and pollinator management programs on woody ornamentals. Key Words. Anthranilic Diamide; Bees; Boxwood Leafminer; Boxwood Psyllid; Bristly Roseslug; Chlorantraniliprole; Eastern Tent Caterpillar; Evergreen Bagworm; Hawthorn Lace Bug; Japanese Beetle; Oak Lecanium Scale; Oleander Aphid; Pollinators. Bees and other insect pollinators face growing threats from the spread of exotic parasites and pathogens, loss of nesting habitat and floral re- sources (pollen and nectar), intensified land use, including use of pesticides, and other fac- tors (Kearns et al. 1998; Goulson et al. 2007; Potts et al. 2010; Goulson et al. 2015). Land care professionals are increasingly expected to incorporate best management practices for safeguarding bees when controlling pests of woody ornamentals and turf (Larson et al. 2014; Smitley et al. 2016). Failure to do so can result in bee kills, negative publicity, fines or license suspension, and calls for further restric- tions on insecticides, whereas “bee-friendly” land care reflects positively on the industry. ©2017 International Society of Arboriculture Most of the synthetic insecticides currently used in urban landscapes are toxic to bees if suf- ficient dosage and exposure levels are met (Besard et al. 2011; Hooven et al. 2013; Tomé et al. 2015; Zhu et al. 2015). Neonicotinoids, especially imi- dacloprid, dinotefuran, clothianidin, and thia- methoxam, are under scientific and regulatory scrutiny because of their potential to translo- cate to pollen and nectar (Blacquière et al. 2012; Goulson 2013; Godfray et al. 2014; Bonmatin et al. 2015; Pisa et al. 2015). Pyrethroids, too, may have both acute and sub-lethal adverse effects on bee health (Inglesfield 1989; Oliver et al. 2015). Landscape professionals need target-selective insecticides for managing insect pests on plants that may be visited by bees. Anthranilic diamides
November 2017
| Title Name |
Pages |
Delete |
Url |
| Empty |
Ai generated response may be inaccurate.
Search Text Block
Page #page_num
#doc_title
Hi $receivername|$receiveremail,
$sendername|$senderemail wrote these comments for you:
$message
$sendername|$senderemail would like for you to view the following digital edition.
Please click on the page below to be directed to the digital edition:
$thumbnail$pagenum
$link$pagenum
Your form submission was a success.
Downloading PDF
Generating your PDF, please wait...
This process might take longer please wait
