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16 November 2023 Effects of mixtures of arrestants, dislodgers, and phagostimulants with synthetic insecticides on green-belly stink bug: walking behavior assessments, physicochemical interactions, and laboratory and field trials
Maíra Chagas Morais, Matheus Rakes, Fabricio Balzan, Anderson Dionei Grützmacher, Daniel Bernardi, Leandro do Prado Ribeiro
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Abstract

The green-belly stink bug (Diceraeus melacanthus Dallas (Hemiptera: Pentatomidae)) is a key pest of corn-soybean crop systems and the management of this pest is difficult due to behavioral characteristics. However, products that alter its behavior, such as arrestants, dislodgers, and phagostimulants, have been used in an attempt to improve the effectiveness of chemical control. In this study, the effect of these products on the walking behavior of nymphs and adults of D. melacanthus was initially evaluated through computational behavioral tracking (Ethovision system). Adults of D. melacanthus exposed to the dislodgers Creolin Pearson and Quimifol S450 (sulfur) significantly increased the distance covered and the walking speed. On the other hand, the only treatment that significantly affected the walking behavior of nymphs was the treatment with soy milk (phagostimulant). The physical–chemical analyses indicated considerable changes in the pH and electrical conductivity of mixtures of such products with insecticides from different chemical groups, as well as lack of homogeneity (physical incompatibility). Nevertheless, none of the products tested improved the control efficacy of an insecticide based on imidacloprid + beta-cyfluthrin, either in laboratory tests (contact bioassay) or in tests conducted in corn crops during 2 crop harvests. Thus, the association of these products in a tank mixture does not increase the control levels of D. melacanthus in post-emergence of maize and may have an antagonistic effect in some associations.

Maíra Chagas Morais, Matheus Rakes, Fabricio Balzan, Anderson Dionei Grützmacher, Daniel Bernardi, and Leandro do Prado Ribeiro "Effects of mixtures of arrestants, dislodgers, and phagostimulants with synthetic insecticides on green-belly stink bug: walking behavior assessments, physicochemical interactions, and laboratory and field trials," Journal of Economic Entomology 117(1), 167-177, (16 November 2023). https://doi.org/10.1093/jee/toad215
Received: 2 July 2023; Accepted: 2 November 2023; Published: 16 November 2023
JOURNAL ARTICLE
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KEYWORDS
chemical control
Diceraeus melacanthus
tank mixture
walking behavior
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