Tag Archives: management

Additional contributors to this article include: Dr. Rodrigo Diaz, Dr. Yan Chen, Dr. Blake Wilson, and Dr. Vinson Doyle. Current crapemyrtle bark scale management methods depend heavily on pesticides, which can have a negative impact on beneficial insects. Biopesticides, insecticides that are developed from live organisms, have shown potential for managing several pests and have low impact on non-target insects and other organisms. The objectives of this research were to determine (1) if biopesticides can be used as a management tool to suppress crapemyrtle bark scale in different seasons, and (2) effects towards beneficial lady beetles known to attack crapemyrtle bark scale. For those interested, here as some details as to how we designed our trial. Treatments were applied as a bark spray to potted plants or full-grown trees infested with crapemyrtle bark scale during winter, spring, and fall 2019. The fungal biopesticides Ancora┬« (Isaria fumosorosea strain PFR97) and BioCeres┬«…

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In Overton, Texas, we’re about done tying up crapemyrtles, getting them on drip irrigation, and starting pre-assessments. We have a total of 100 standard (Queen’s Lace) and 100 dwarf (Pocomoke) cultivars, all highly infested with crapemyrtle bark scale, for our research trial. Before deciding what insecticides and timing of applications we would try, we had to summarize some of our past results. All of our past work on crapemyrtle bark scale insecticide trials are available through Arthropod Management Tests (https://academic.oup.com/amt and search for “crapemyrtle bark scale”). If you’re feeling a bit intimidated by the papers in Arthropod Management Tests, I made a short video tutorial walking through some of the jargon used in insecticide efficacy work. The following table is based on data from our Overton Center: Table last update July 8, 2020. We’re going to be testing some of the products that were considered “inconclusive” in our past trials,…

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