Author(s): BARBOSA, D. R. E. S.; OLIVEIRA, J. V. de; SILVA, P. H. S. da; BREDA, M. O.; DUTRA, K. de A.; LOPES, F. S. C.; ARAÚJO, A. M. N. de

Summary: Stored grain insects are controlled with fumigant insecticides which can select resistant insect populations and cause environmental and applicator contamination. Thus, resistant cultivars and chemical constituents of essential oils are an alternative to the almost exclusive use of these insecticides. The effects of the combination of cowpea cultivars Vigna unguiculata (L.) Walp. with chemical constituents of essential oils against Callosobruchus maculatus were determined. Four cowpea cultivars: BRS Tracuateua, BR 17 Gurgueia, Epace 10 and Sempre Verde (insect rearing) untreated were used in the experiments and combined with chemical constituents of essential oil: eugenol, geraniol and trans‐anethole. The biological parameters observed were: total egg number and eggs per grain, egg viability (%), insects emerged and insects per grain, immature stage viability (%), instantaneous rate of growth (ri), insect dry weight (mg), grain weight loss (%) and egg‐adult period.

Publication year: 2020

Types of publication: Journal article

Unit: Embrapa Mid-North

Keywords: Botanical insecticides, Genetic resistance, Gorgulho, Insecticide resistance, Inseticida de Origem Vegetal, Plant pests, Resistência Genética, Vigna Unguiculata