Insecticidal effect of graphene against three stored-product beetle species on wheat. (September 2022)

• Record Type: Journal Article
• Authors: Moisidis, Ioannis Charalambos; Sakka, Maria K.; Karunagaran, Ramesh; Losic, Dusan; Athanassiou, Christos G.
• Is Part Of: Journal of stored products research. Volume 98(2022)
• Publication Date: 2022-09
• Subjects: Nanotechnology -- Graphene -- Graphene insecticide -- Wheat -- Stored-product pests; Food -- Storage -- Periodicals; Farm produce -- Storage -- Diseases and injuries -- Periodicals; Entomology -- Periodicals; Food Contamination -- Periodicals; Food Preservation -- Periodicals; Insect Control -- Periodicals; Aliments -- Entreposage -- Périodiques; Produits agricoles -- Entreposage -- Maladies et dommages -- Périodiques; Electronic journals; 631.568
• DOI: 10.1016/j.jspr.2022.101999
• Languages: English
• ISSNs: 0022-474X

Abstract

Abstract: The efficacy of two formulations of graphene powders against Rhyzopertha dominica (F.), Sitophilus oryzae (L.) and Tribolium castaneum (Herbst) was tested on wheat. The graphene formulations using two different graphene materials were tested at different concentrations, i.e. 0, 250, 500 and 1000 ppm. Adult mortality was recorded after 7, 14 and 21 days of exposure and progeny production was recorded after 65 days. Our results indicate that the increase of concentration increased adult mortality and decreased progeny production. Both graphene formulations showed similar results. Rhyzopertha dominica and S. oryzae were found to be the most susceptible species with 100% mortality after 21 days of exposure to 250 ppm. Application of 500 and 1000 ppm caused 100% mortality after 7 days of exposure. In contrast, for T. castaneum some survival was recorded after 7 days of exposure at 500 and 1000 ppm, but mortality was 100% at the 21-day exposure interval. For both formulations, progeny production was negligibly reduced at the two highest graphene concentrations. The findings of the present research showed that the graphene materials showed high efficacy, especially at 500 and 1000 ppm, and could be used to control the species tested and indicated graphene insecticidal properties most likely are based on a physical mode of action. Highlights: Increase in concentration increased adult mortality of R. dominica, S. oryzae and T. castaneum. Progeny production was low for all treatments. Rhyzopertha dominica and S. oryzae were found to be the most susceptible species. Some survival was recorded at 500 and 1000 ppm for T. castaneum. Formulating graphene can effectively protect wheat against stored product insects.