Atividade inseticida de meliáceas sobre Diabrotica speciosa (Col., Chrysomelidae)

Seffrin, Rita de Cássia Andrade dos Santos; Costa, Ervandil Corrêa; Domingues, Lucas da Silva; Dequech, Sônia Thereza Bastos; Sausen, Carla Daniele

doi:10.1590/s0103-84782008000700001

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…these effects in different host plants. Seffrin et al (2008a) observed that aqueous extracts of different M. azedarach plant structures successfully controlled D. speciosa adults in cucumber and snap beans; however, extract-treated plants did not have their height and yield affected. Furthermore, Seffrin et al (2008b) reported that M. azedarach leaflet extract caused stronger antifeeding effect on D. speciosa adults than the petiole + stem extract.…”

Section: Larvaementioning

confidence: 99%

Formulations of Melia azedarach to Control Diabrotica speciosa (Germar) (Coleoptera: Chrysomelidae) Larvae in Corn and Plant Enhancement

et al. 2015

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We evaluated oil and powder formulations of Melia azedarach for controlling larvae of Diabrotica speciosa (Germar) in corn and plant enhancement. Five concentrations of each formulation were evaluated and compared to fipronil (negative control) and distilled water (positive control). After treatment, the number of surviving insects (larvae, pupae, and adults), the adult body weight, the sex ratio, and the longevity were recorded, while the height, dry weight of aerial part and roots, and number of leaves of plants were measured. The oil formulation at 4.0 mL reduced the larvae population of D. speciosa similarly to the insecticide fipronil, which resulted in greater height, dry weight of the root system, and number of leaves. Powder formulation at concentrations of 40, 80, and 160 mg caused larval mortality above 80%; however, these concentrations did not prevent reduction of plant height and dry weight of aerial part. Further studies assessing the residual period of M. azedarach control against D. speciosa larvae and its phytotoxicity, which are common traits associated with azadirachtin application, are necessary to subsidize the next steps of this alternative control strategy.

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Section: Larvaementioning

confidence: 99%

Formulations of Melia azedarach to Control Diabrotica speciosa (Germar) (Coleoptera: Chrysomelidae) Larvae in Corn and Plant Enhancement

et al. 2015

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“…Métodos de controle alternativo de insetos-praga sem que haja aplicação de agrotóxicos têm sido testados em consequência da crescente utilização de alimentos orgânicos, e também com a preocupação com o meio ambiente e a saúde humana (vendraMiM & CaStiGlioni 2000). Em termos de agricultura orgânica são empregados produtos alternativos, como raiz de taiuiá (StüPP et al 2006), óleo de nim (Seffrin et al 2008), extratos aquosos de fumo, pitangueira, cinamomo e alho (MaChado et al 2007). Sedorko et al (2010) ao realizarem testes com oito atrativos preparados a partir de óleos essenciais comerciais, com intuito de propor uma alternativa para o controle de moscas-da-fruta (Diptera: Tephritidae) notaram que, dos 422 insetos capturados no experimento, 21% eram da espécie D. speciosa, atraídas por citronela (Cymbopogon sp).…”

Section: E-issn 1983-0572unclassified

Óleo essencial de citronela (Poaceae) e seus componentes para controle do brasileirinho (Coleoptera: Chrysomelidae) em olerícolas

et al. 2019

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Resumo. Este estudo teve como objetivo obter uma formulação atrativa à base de óleo de citronela e seus componentes voláteis para captura de Diabrotica speciosa (Germar). Três experimentos sequenciais foram realizados em culturas de abobrinha ou pepino. Os insetos foram coletados por armadilhas de garrafa PET com três aberturas laterais, contendo um volume de 200 ml de cada formulação, suspensas a 10 cm do nível do solo numa área experimental de 30 m2. No primeiro experimento foram testados óleo de citronela em 1, 2 e 4%. No segundo investigou-se também a ação de citronelal, citronelol e geraniol a 1%. E, o citronelol a 0,5, 1 e 2% foi testado no terceiro experimento. Como resultado observou-se que a formulação contendo citronelol a 0,5% foi estatisticamente superior às demais. Outros insetos foram capturados pelas armadilhas como coleópteros Diabrotica viridula (Fabricius)e Astylus variegatus (Germar), e também exemplares de Diptera, Hemiptera e Hymenoptera. Considerando a alta demanda por alimentos orgânicos e da preocupação com o ambiente e a saúde, a emulsão a base de citronelol em 0,5% cumpre adequadamente o seu objetivo, garantindo uma boa capacidade atrativa para D. speciosa. Esta formulação pode ser usada paralelamente com outros métodos alternativos para reduzir a presença desse inseto nas culturas.Citronella (Poaceae) essential oil and its components for the control of brasileirinho (Coleoptera: Chrysomelidae) in vegetable cropsAbstract. The present study aimed to get an attractive formulation of oil-based citronella and its volatile components to capture Diabrotica speciosa (Germar). Three sequential experiments were performed in zucchini or cucumber crops. The insects were collected in PET bottle traps with three lateral apertures, containing a volume of 200 ml of each formulation, suspended 10 cm above the ground level in an experimental area of 30 m2. In the first experiment citronella essential oil was tested at 1, 2 and 4%. In the second experiment the action of citronellal, citronellol and geraniol at 1% were investigated. Furthermore, citronellol at 0.5, 1 and 2% has been tested in the third experiment. As a result it was observed that the formulation containing 0.5% citronellol was statistically higher than the other tested formulations. Other insects were captured by the traps as the beetles of Diabrotica viridula (Fabricius)and Astylus variegates (Germar), and also copies of Diptera, Hemiptera and Hymenoptera. Considering the high demand for organic food, and concern for the environment and health, the citronellol emulsion at 0.5% adequately fulfilled its goal, ensuring a good attractive capacity for D. speciosa. This formulation can be used simultaneously with other alternative methods to reduce the presence of such insects in crops.

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Controle alternativo do míldio da videira com extrato aquoso de cinamomo e óleo vegetal

et al. 2012

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RESUMOEste trabalho teve como objetivo avaliar o efeito do extrato aquoso de cinamomo (Melia azederach) no controle de Plasmopara viticola. Para o teste de germinação de esporângios do oomiceto foram utilizadas as concentrações de 0, 5, 10, 15, 20 PALAVRAS-CHAVES:Vitis vinifera, lírio-da-índia, agroecologia, Plasmopara viticola, Melia azederach. ABSTRACT ALTERNATIVE CONTROL OF DOWNY MILDEW WITH AQUEOUS EXTRACTS OF CHINA-BERRY AND VEGETABLE OIL.The aim of the present study was to evaluate the effect of aqueous extract of chinaberry (Melia azedarach) in the control of Plasmopara viticola. For the germination test of sporangia of the oomycete, concentrations of 0, 5, 10, 15, 20 and 25 mL L -1 of aqueous extract of chinaberry (EC) were used, as well as treatments with mancozeb and bordeaux mixture. The experiment in the greenhouse and field involved concentrations of 0, 30, 40 and 50 mL L -1 of EC (1:10 w/v) and a treatment with bordeaux mixture (1:1:100 ). In the second experiment in the field the treatments were: 0, 10, 20, 30, 40 and 50 mL L -1 of EC with an added 2.5 mL L -1 of vegetable oil, the bordeaux mixture and an absolute control. In the germination test, there was highest inhibition of P. viticola at 2 hours after incubation at 20° C, for the 20 and 25 mL L -1 concentrations of the EC, with a reduction of 66.5 and 62.0%, respectively. In the greenhouse conditions, the EC at a concentration of 40 and 50 mL L -1 showed a reduction of 70.0% and 86.0% of the disease, respectively, while the same concentrations in the first cycle of the field experiment showed a decrease of 34.0% and 31.0%, respectively. However, in the second cycle, the use of vegetable oil as an adjunct masked the effect of the EC, and the isolated application of vegetable oil decreased the area under the disease progress curve (ADPC) by 76.3%, similar to results obtained with all concentrations of EC and with the bordeaux mixture.

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Atividade inseticida de meliáceas sobre Diabrotica speciosa (Col., Chrysomelidae)

Cited by 3 publications

References 3 publications

Formulations of Melia azedarach to Control Diabrotica speciosa (Germar) (Coleoptera: Chrysomelidae) Larvae in Corn and Plant Enhancement

Formulations of Melia azedarach to Control Diabrotica speciosa (Germar) (Coleoptera: Chrysomelidae) Larvae in Corn and Plant Enhancement

Óleo essencial de citronela (Poaceae) e seus componentes para controle do brasileirinho (Coleoptera: Chrysomelidae) em olerícolas

Controle alternativo do míldio da videira com extrato aquoso de cinamomo e óleo vegetal

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