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We compared the lethal and sublethal effects of 2 novel Betaproteobacteria-based insecticides (Burkholderia spp. strain A396 as Venerate® XC; Chromobacterium subtsugae strain PRAA4-1 as Grandevo® WDG) for suppression of 2 polyphagous insect pests of world-wide importance: green peach aphid, Myzus persicae (Sulzer) (Hemiptera: Aphididae), and Madeira mealybug, Phenacoccus madeirensis Green (Hemiptera: Pseudococcidae). In laboratory and screenhouse tests, the insects were exposed to residues applied by leaf dipping, or by spraying the insects and foliage. These novel products also were compared to a well-established product, spirotetramat (Movento® 240 SC). Spirotetramat was generally effective for suppression of both species of insects, and Burkholderia (Venerate) induced mortality levels that made it competitive with spirotetramat. Chromobacterium subtsugae (Grandevo) was less satisfactory, inducing only moderate levels of mortality in both species. Reproduction by aphids surviving exposure to Burkholderia was slightly affected, whereas C. subtsugae did not affect reproduction. New Betaproteobacteria-based insecticides show promise for a useful role in suppressing important insect pests such as M. persicae and P. madeirensis.

the florida entomologist

Comparative Effects of Two Novel Betaproteobacteriabased Insecticides on<i>Myzus persicae</i>(Hemiptera: Aphididae) and<i>Phenacoccus madeirensis</i>(Hemiptera: Pseudococcidae)

Comparative Effects of Two Novel Betaproteobacteriabased Insecticides onMyzus persicae(Hemiptera: Aphididae) andPhenacoccus madeirensis(Hemiptera: Pseudococcidae)