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Toxicity of oil from Anacardium humile Saint Hill (Anacardiaceae), on Bemisia tuberculata (Bondar, 1923) (Hemipttera: Aleyrodidae) on cassava plants.

Andrade Filho, Nézio Neri; Roel, Antonia Railda; Yano, Mami; Cardoso, Claudia Andreia Lima and Matias, Rosemary (2013) Toxicity of oil from Anacardium humile Saint Hill (Anacardiaceae), on Bemisia tuberculata (Bondar, 1923) (Hemipttera: Aleyrodidae) on cassava plants. [Toxicidade do óleo de Anacardium humile Saint Hill (Anacardiaceae) em Bemisia tuberculata (Bondar, 1923) (Hemiptera: Aleyrodidae) em plantas de mandioca.] Revista Brasileira de Agroecologia, 8 (2), pp. 185-190.

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Document available online at: http://www.aba-agroecologia.org.br/revistas/index.php/rbagroecologia/article/view/12898/8907


Summary

The aim was to evaluate the toxic effects of essential oil of Anacardium humile, in different concentrations, on survival and development of the whitefly Bemisia tuberculata on the cassava plants, Manihot esculenta Crantz. The experiment was carried out in a greenhouse at a temperature of 26±4º C. Twenty adults were confined in cages, which contained a leaf of cassava plant and removed after 24 hours. The oil was sprayed in the concentrations of the 0.006%, 0.05%, 0.8% and 2%, when the nymphs were attached to the leaves. Data was collected daily by counting nymphs, pseudopupae and adults and the passages of each stage. All treatments increased the juvenile phase. The mortality in the nymphal stage decreased with the oil concentration, respectively, 79.81 (2%), 77.89 (0.8%), 79.98 (0.05%) and 67.14% (0.006%). The total mortality of pseudopupae followed the same tendency. The essential oil from the leaves of A. humile is a supplier of molecule(s) insecticide(s) and causes a deleterious effect on B. tuberculata with increased of the the juvenile phase, nymphal and total mortality of pseudopupae.


Summary translation

Objetivou-se avaliar o efeito tóxico do óleo essencial de Anacardium humile, em diferentes concentrações, na sobrevivência e desenvolvimento da mosca branca Bemisia tuberculata, principal praga da cultura de mandioca, Mahihot esculenta Crantz. O experimento foi conduzido em casa-de-vegetação em temperatura de 26±4ºC. Vinte indivíduos adultos foram confinados em gaiolas, que encerrava uma folha de mandioca e retirados após 24 horas. O óleo foi pulverizado nas concentrações de 0,006%; 0,05%; 0,8% e 2,0%, quando as ninfas estavam fixas nas folhas. Os dados foram coletados diariamente com a contagem de ninfas, pupas e adultos e nas datas em que ocorreram as passagens de cada fase. Todos os tratamentos aumentaram a duração da fase jovem. A mortalidade decresceu com a concentração do óleo na fase de ninfa, respectivamente, 79,81% (2%), 77,89% (0,8%), 79,98% (0,05%) e 67,14% (0,006%). A mortalidade total de pseudopupas seguiu o mesmo padrão em relação à concentração do óleo essencial. O óleo essencial das folhas de A. humile é fornecedor de molécula(s) inseticida(s) e causam efeitos deletérios em B. tuberculata com aumento da duração da fase jovem, mortalidade de ninfas e do total de pseudopupas.

EPrint Type:Journal paper
Keywords:Pesticide plants, Sesquiterpenes, Cassava pests control, Whitefly. Plantas inseticidas, Sesquiterpenos, Controle de pragas da mandioca, Mosca branca.
Agrovoc keywords:
Language
Value
URI
English
agroecology
http://aims.fao.org/aos/agrovoc/c_92381
English
Anacardiaceae
http://aims.fao.org/aos/agrovoc/c_376
English
Aleyrodidae
http://aims.fao.org/aos/agrovoc/c_8381
Subjects: Farming Systems
Farming Systems > Social aspects
Research affiliation: Brazil > Other organizations
ISSN:1980-9735
Related Links:http://www.aba-agroecologia.org.br/revistas/index.php/rbagroecologia/index
Deposited By: Pinto, Gabriela Franco
ID Code:25296
Deposited On:23 Jul 2014 18:16
Last Modified:23 Jul 2014 18:16
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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