Aug 15, 2021

Products with bifenthrin OK’D for use against brown marmorated stink bug

Similarly, as during the last few years, active ingredient bifenthrin belonging to the group of pyrethroids, IRAC Group 3A, received a special Section 18 Emergency Exemption Registration from U.S. EPA on Aug 05, 2021.

Three commercial products with bifenthrin are available for growers to use against brown marmorated stink bug: Brigade WSB (FMC Corp., Philadelphia, Pennsylvania), Bifenture EC (United Phosphorus Inc., King of Prussia, Pennsylvania) and Bifenture 10DF (United Phosphorus Inc.).

According to the product labels Brigade WSB is recommended at the rate of 12.8 to 32.0 oz, Bifenture EC at the rate of 5.12 to 12.8 fl oz, and the Bifenture 10DF at the rate of 12.8 to 32 oz per acre. Bifenthrin can be applied up to two times per season, with at least 30 days interval between applications.

Growers who plan to use products containing bifenthrin need to have the Section 18 label available prior to application. Under Section 18 Registration, products containing bifenthrin can be used on apples, peaches, and nectarines (bifenthrin already has a full registration on pears) up to 14 days before harvest (14 d PHI, 12 h REI).

Please remember, another formulation of bifenthrin, Brigade 2EC is not included in the Section 18 Emergency Registration and this product is not registered for use on fruit (except pears).

The section 18 emergency exemption registration for products containing bifenthrin will expire on Oct. 15, 2021.

– Gregory (Greg) Krawczyk, Penn State University

Brown marmorated stink bug. Photo: Penn State University