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ARS Home » Southeast Area » Byron, Georgia » Fruit and Tree Nut Research » Research » Publications at this Location » Publication #392671

Research Project: Novel Approaches for Managing Key Pests of Peach and Pecan

Location: Fruit and Tree Nut Research

Title: Control of Pecan Weevil using reduced rates of Grandevo®, a Microbial Biopesticide

item Shapiro Ilan, David
item WELLS, LENNY - University Of Georgia

Submitted to: Pecan South
Publication Type: Trade Journal
Publication Acceptance Date: 3/17/2022
Publication Date: 4/2/2022
Citation: Shapiro Ilan, D.I., Wells, L. 2022. Control of Pecan Weevil using reduced rates of Grandevo®, a Microbial Biopesticide. Pecan South. 55(2), 38-45.

Interpretive Summary:

Technical Abstract: Pecan weevil is an important pest in pecan, Broad spectrum chemical insecticides used to control pecan weevil (Curculio caryae) can harm the environment and cause flare-up of pecan aphids. Grandevo is a natural bacteria-based bio-insecticide based on Chromobacterium subtsugae. The bacterial bio-insecticide (Grandevo) is safet to the envirnoment and nontarget organisms including aphid natural enemies. In this study we showed that a reduced rate of Grandevo can provide high levels of pecan weevil control (>90%) when applied to the tree canopy. Thus, organic and conventional pecan growers can use Grandevo to control pecan weevil without substantial harm to natural enemies.