Abstract
Worldwide, Myzus persicae (Sulzer) is considered the key vector of Potato leafroll virus (PLRV). In the northern Great Plains, introduction of PLRV into seed potato fields is coincident with mid-summer dispersal of winged M. persicae from local crop and weed hosts. Initial colonization of potato fields tends to occur at field margins. In 2003, experiments were conducted in 23 seed potato fields to evaluate effectiveness of targeted methamidophos applications for M. persicae control. These applications provided excellent control (>94%) of colonizing aphids in the borders, slowed subsequent within field spread, and necessitated treatment of 95% fewer hectares than would treating entire fields. Across entire fields, control costs averaged $4.22 per ha for border treatments compared to a hypothetical $58.91 per ha for applying methamidophos to entire fields. Thus targeted insecticide applications can provide effective M. persicae control in seed potato fields while greatly lowering insecticide use and application costs overall.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
