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URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3352
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Item In vivo compatibility between Beauveria bassiana (Bals.) Vuillemin and castor oil on Hypothenemus hampei (Ferrari)(Editora UFLA, 2020) Celestino, Flávio Neves; Pratissoli, Dirceu; Santos Junior, Hugo José Gonçalves dos; Machado, Lorena ContariniThe degree of in vivo compatibility between the entomopathogenic fungi Beauveria bassiana (Bals.) Vuillemin (Ascomycota: Hypocreales) and castor oil is important, as the interaction can be additive, synergistic or antagonistic. Thus, the objective of this study was to evaluate the in vivo compatibility between castor oil and B. bassiana on the coffee berry borer. The CCA-UFES/Bb-4 isolate of B. bassiana was used in concentrations of 0.0 (control), 1 x 104, 1 x 105, 1 x 106 and 1 x 107 conidia mL-1. The concentrations of castor oil were: 0.0 (control), 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0% v v-1. The total and confirmed mortality were evaluated, and data submitted to variance analysis. To verify the effect of B. bassiana and castor oil concentrations, the data were submitted to regression analysis at 5% probability. Castor oil had an antagonistic effect on B. bassiana reducing the mortality of coffee berry borer. The mortality of H. hampei reduced caused by interaction between B. bassiana and castor oil, due to increasing concentration of castor oil. Lower interference of castor oil was observed for high concentrations of B. bassiana. Based on the results, management of H. hampei cannot be normally performed using the association between castor bean oil and B. bassiana, except if the economic viability of the higher concentrations justified.Item Control of coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae: Scolytinae) with botanical insecticides and mineral oils(Editora da Universidade Estadual de Maringá - EDUEM, 2016-01) Celestino, Flávio Neves; Pratissoli, Dirceu; Machado, Lorena Contarini; Santos Junior, Hugo José Gonçalves dos; Queiroz, Vagner Tebaldi de; Mardgan, LeonardoThe objective of this study was to evaluate botanical oils, mineral oils and an insecticide that contained azadirachtin (ICA) for the control of Hypothenemus hampei, in addition to the effects of residual castor oil. We evaluated the effectiveness of the vegetable oils of canola, sunflower, corn, soybean and castor, two mineral oils (assist ® and naturol ® ), and the ICA for the control of H. hampei. The compounds were tested at a concentration of 3.0% (v v-1 ). The median lethal concentration (LC 50 ) was estimated with Probit analysis. The oil of castor bean and extract of castor bean cake were also evaluated at concentrations of 3.0% (v v -1 ) and 3.0% (m v-1 ), respectively. The mortality rates for H. hampei caused by the ICA and the castor oil were 40.8 and 53.7%, with LC 50 values of 6.71 and 3.49% (v v-1 ), respectively. In the castor oil, the methyl esters of the fatty acids were palmitic (1.10%), linoleic (4.50%), oleic (4.02%), stearic (0.50%) and ricinoleic acids (88.04%). The extract of the castor bean cake was not toxic to H. hampei. The persistence of the castor oil in the environment was low, and the cause of mortality for H. hampei was most likely the blockage of the spiracles, which prevented the insects from breathing.Item Toxicidade do óleo de mamona à broca-do-café [Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae: Scolytinae)](Editora UFLA, 2015-07) Celestino, Flávio Neves; Pratissoli, Dirceu; Machado, Lorena Contarini; Costa, Adilson Vidal; Santos Junior, Hugo José Gonçalves dos; Zinger, Fernando DomingoO óleo extraído da semente da mamoneira tem demonstrado ser muito promissor ao controle de insetos-praga. Objetivou-se, neste trabalho, avaliar a eficiência do óleo de duas cultivares de mamona, sob duas formas de aplicação e em sete concentrações para o controle de Hypothenemus hampei (Ferrari). O óleo obtido das cultivares de mamona, IAC 80 e Paraguaçu, foram utilizadas nas concentrações de 0,5; 1,0; 1,5; 2,0; 2,5 e 3,0% (v/v) e o controle (0,0%), em aplicação direta e indireta sobre a broca-do-café. As cultivares de mamona não apresentaram diferença significativa quanto à mortalidade de H. hampei. A aplicação direta do óleo de mamona sobre a broca-do-café provocou maior mortalidade que a aplicação indireta, exceto para a concentração de 0,5% (v/v). O óleo de mamona na concentração de 3,0% (v/v) causou 34,21 e 63,20% de mortalidade para as aplicações indireta e direta, respectivamente. A mortalidade provocada pela aplicação indireta e direta sobre a broca-do-café aumentou em função do aumento da concentração do óleo de mamona. A aplicação direta do óleo de mamona sobre a broca-do-café apresentou CL 50 de 2,05% (v/v).