Hermetic storage for control of common bean weevil, Acanthoscelides obtectus (Say)

Abstract

Keywords: Bruchid Modified atmosphere Phaseolus vulgaris Plastic bottle Silo bag a b s t r a c tThis study evaluated hermetic storage as a method of controlling Acanthoscelides obtectus (Coleoptera: Chrysomelidae: Bruchinae) in stored beans. Recently harvested "vermelhinho" cultivar of the common red bean was used, which had already been infested by A. obtectus in the field. Beans with a moisture content of 15.0% wet basis were stored in silo bags (3 kg), plastic bottles (1.5 L), or non-hermetic glass containers (3 L) (control) for 120 days. The packages were stored in an acclimatized chamber at 25 C with a relative humidity of 70 ± 5%. At time intervals of 0, 30, 60, 90, and 120 days, three packages of each treatment were opened, and analyses were performed to assess the infestation percentage by insect pests, moisture content, density, electrical conductivity, germination percentage, and cooking time. There was no increase in infestation by A. obtectus in the grains stored in the silo bags and plastic bottles during the 120 days of storage; however, there was a significant increase in infestation in the grains in nonhermetic storage (control). The quality of the beans correlated with infestation; it was not altered in the hermetic storage systems and decreased in the control sample. Hermetic storage of common beans is an effective tool in the control of A. obtectus.

Plant‐Derived Substances Used Against Beetles–Pests of Stored Crops and Food–and Their Mode of Action: A Review

“…Next, an alternative technique for storing and protecting grains is hermetic storage combined with vacuum and gas hermetic fumigation (Freitas, Faroni, & Sousa, ). This method, in which polyethylene silo bags and polyethylene terephthalate (PET) bottles are used, was successfully utilized for A. obtectus .…”

“…This method, in which polyethylene silo bags and polyethylene terephthalate (PET) bottles are used, was successfully utilized for A. obtectus . The success of this method is correlated with the creation of different environmental conditions such as decreased levels of oxygen and increased levels of carbon dioxide, causing inhibition of feeding in insects, which then become inactive, and consequently, die from asphyxiation or desiccation (Freitas et al., ; Moreno‐Martinez, Jiménez, & Vázquez, ; Murdock, Margam, Baoua, Balfe, & Shade, ). Mbata and Payton () tested the combination of hermetic storage and usage of safe fumigants of botanical derivatives such as monoterpenoids on adults of T. castaneum , which caused 100% mortality.…”

Potential of diatomaceous earth as a management tool against Acanthoscelides obtectus infestations

“…Because of these backlashes, the investigation of new products that are less persistent in the environmental and less harmful to other organisms is of extreme importance. Among these alternatives, mechanical control, essential oils, inert dusts or combinations of them have been demonstrated to be effective to control the weevils that attack bean grains (Papachristos and Stamopoulos, 2004;Badii et al, 2014;González Armijos et al, 2019;Rodríguez-González et al, 2019), including A. obtectus (Bohinc et al, 2013;Freitas et al, 2016;Viteri Jumbo et al, 2018).…”

Isolation and identification of floral attractants from a nectar plant for the dried bean beetle, Acanthoscelides obtectus (Coleoptera: Chrysomelidae, Bruchinae)

“…8 It can have several generations a year and can multiply both in the field and in granaries. 9,10 The control of A. obtectus using various chemical, biological, mechanical and cultural methods has met with varied success, 4,[11][12][13][14][15][16][17][18] and is still lacking a sensitive tool for the detection and monitoring of infestations. Also, the recent ban of methyl bromide, a broad-spectrum fumigant, 19 facilitated the search for alternatives in stored product pest management.…”