Managing insect and plant pathogen pests with organic and conventional pesticides in onions.

ABSTRACT: Onion thrips (Thrips tabaci Lindeman, Thysanoptera: Thripidae) is a significant insect pest of onions (Allium cepa L., Asparagales: Amaryllidaceae). In addition to feeding on onion foliage, they may spread plant pathogens. Currently, onion thrips and pathogens are managed as separate pests with insecticides and fungicides. It may be beneficial to manage these pests simultaneously as limiting onion thrips may reduce pathogen damage. We tested combinations of bio- and conventional pesticides in a season-long management program in Michigan onion fields. From 2020 to 2022, we counted onion thrips weekly and visually estimated plant foliage necrotic damage (%) in experimental plots each year. In 2020, we tested 6 treatment programs including: azadirachtin, spinosad, a copper-based fungicide, az

SUBMITTER: Constancio N 

PROVIDER: S-EPMC10711546 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature