13805 - Atividade do óleo essencial e extrato aquoso de Tagetes minuta (Asteraceae) sobre o consumo alimentar de Diabrotica speciosa (Germar, 1824) (Coleoptera: Chrysomelidae) em batata, sob condições de laboratório Activity of the essential oil and aqueous extract of Tagetes minuta (Asteraceae) on the food intake of Diabrotica speciosa (Germar, 1824) (Coleoptera: Chrysomelidae) in potato under laboratory conditions

The use of bioactive plants for insect management is an alternative to the use of synthetic products within agricultural production systems that aim at sustainability. The aim of the study was to determine the dietary intake of D. speciosa in potato leaves were treated with different concentrations of oil, and flower and leaf extract of T. minutes, compared to neem to 5% v/v and the witness, distilled water. The experiment was conducted in the laboratory with a completely randomized design, consisting of 10 treatments without chance eight-choice. In the first bioassay, the flower essential oil and leaf caused the death of 94% of the insects at all concentrations used. Then, the flower extract at 5% and 20% v/v, along with neem oil, caused the reduction in consumption when compared to control, suggesting that further tests are performed for better understanding of the bioactivity exerted by the oil, and plant extract on the insect.