Timing is everything when it comes to effective pest management. Knowing when a pest is susceptible to which kind of pesticide is the key for successful control. Coupled with OBLR phenology, Dr. Jones identified four windows in time when OBLR control is effective: 1) 90 degree-days (DD) – larvicide application, when overwintering larvae are becoming active in spring, 2) 720 DD – ovicide application (e.g. oil), when eggs of the first summer generation are being deposited, 3) 900 DD – larvicide + oil application, when eggs and young OBLR larvae are abundant, and 4) 1800 DD – larvicide + oil application, when eggs and young OBLR larvae of the second summer generation are abundant.

See full article Most Effective Strategies for Control of Oblique Banded Leafroller

Contact

Ute (Kührt) Chambers, DAS Manager/EducatorTree Fruit Research and Extension Center
1100 N Western Ave. Wenatchee, WA
Phone: 509-663-8181 ext. 290
Fax: 509-663-8714
E-mail: uchambers@wsu.edu

Additional information