Presence-Absence Sequential Sampling for Cabbage Aphid and Green Peach Aphid (Homoptera: Aphididae) on Brussels Sprouts

Abstract

A presence-absence sequential sampling plan, which incorporates the between-plant clumping behavior of cabbage aphid and green peach aphid, was developed for Brussels sprouts. Tentative control decision thresholds are proposed for the respective aphid species. The distribution pattern of cabbage aphid is much more clumped, as indicated by much higher density of insects for a given proportion of infested plants.