Leafhopper Deterrence Linked to X Disease Management
WSU entomologists and industry partners learn about X disease vectors to help the cherry industry optimize management. Work by the Nottingham lab on insecticide efficacy (“catching lots of wild leafhoppers and trying to keep them alive long enough to kill them”) and systemic insecticides applied via soil drench is highlighted.
Codling moth has been the key pest of pome fruits across the growing regions of Washington and Oregon for over 100 years. During that time, pest management programs regularly evolved as key pesticides were phased out and new technology was incorporated. As we continue to adapt new tools and tactics, there is a need to synthesize and evaluate past and current codling moth research and management recommendations, and to communicate that information to stakeholders. The Codling Moth Task Force was created to take the lead in this issue.
On Thursday, February 18, 2021 as part of an OSU/WSU webinar, Stijn van Laer gave a talk on pear psylla management in northern European pear orchards. Stijn is a crop consultant that works for company called FruitConsult based in Belgium. They are a private consulting firm that does not sell products (i.e., chemicals), just management recommendations. Stijn discussed management of pear psylla in European orchards with conservation biological control (i.e., only using soft insecticides and at economic thresholds) and by augmentation of earwigs. He also discussed the importance of proper sprayer calibration and how this can make or break effective management.
Pear psylla and honeydew marking to fruit cause significant economic damage to pears in Washington, a key pear growing region of the United States. The goal of this project is to compare an integrated pest management (IPM) program using materials which selectively target pests and relies on large natural enemy populations to grower standard conventional and organic pear pest management.
Pear Psylla IPM: Strategies and New Research (2021 Pear Day)
Miss the virtual 2021 WSU Tree Fruit Days in January? No worries, Louie Nottingham’s webinar on Pear IPM is available any time. Here, Louie discusses key components to successful pear IPM programs and his latest research results.
Nottingham and Orpet wrote an article in the February 2021 edition of ‘Tree Fruit News’ reminding growers to start preparing dormant sprays of kaolin clay (Surround) to deter pear psylla colonization in the orchard. A dormant Surround spray will provide the first line of defense to keep psylla from entering your orchard. The optimal time to make this first Surround application depends on weather, but here is a good rule of thumb: if it is warm and dry enough for you to safely spray, go for it – psylla are probably colonizing your orchard!
Nottingham Interviews Dr. Angelita (Angel) Acebes-Doria in Entomology Today.
Read my interview with an incredibly inspirational entomologist, Dr. Angel Acebes-Doria; someone I’m proud to call a colleague and friend.
Angel discussed topics that many early career scientists face, such impostor syndrome and running a research lab during COVID, but also some that are more specific to people who came to the US from other countries for their education and careers.
Pear psylla, Cacopsylla pyricola (Förster), has remained the most challenging pest of commercial pears in Washington and Oregon, the top producers of pears in the United States. The lack of effective integrated pest management tactics for this pest has been a major barrier to effective management. In this study, we examined the potential for reflective plastic mulch affixed beneath pear trees to suppress pear psylla. In 2017 and 2018, single pear tree (cv. Bartlett) plots of reflective plastic mulch, black plastic mulch, and no mulch (check) were established in a research orchard to compare their effects on pear psylla.
Orpet and Nottingham article in ‘Fruit Matter’s Newsletter’ about potential for Surround applied in the fall for pear psylla management.
Kaolin clay (Surround WP) is a white sprayable powder that discourages pear psylla from laying eggs on pear trees by creating a physical barrier over the tree’s surface. If sprayed early in the season, the white coating could also deter psylla from colonizing orchards, possibly due to repellency of reflected UV light to insects. Kaolin is more persistent on trees than most insecticides, especially when used with a spreader-sticker (check labels for compatibility and mixing instructions), and it has low risk of harming natural enemies because it is non-toxic.