2006
DOI: 10.1590/s0006-87052006000300011
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Efeito de extratos aquosos de Azadirachta indica, Melia azedarach e Aspidosperma pyrifolium no desenvolvimento e oviposição de Plutella xylostella

Abstract: RESUMOForam avaliados a CL 50 e o efeito de extratos aquosos de plantas na biologia, oviposição e período embrionário de Plutella xylostella L. (Lepidoptera: Plutellidae). Para determinação da CL 50 foram utilizadas concentrações entre 0,03 e 0,8 % para amêndoas de Azadirachta indica (A. Juss.) 0,5 e 7,0 % para casca de Aspidosperma pyrifolium (Mart.) e 0,5 e 12,5 % para frutos de Melia azedarach (L.), obtendo-se as CL 50 de 0,06; 2,17 e 2,90%, respectivamente. Verificou-se que os extratos aquosos de todas as … Show more

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Cited by 46 publications
(32 citation statements)
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“…Plant powders can control insects by eroding the cuticle layer and causing dehydration (Kedia et al 2013); blocking the spiracles and causing asphyxiation (Denloye 2010); or impairing physiological processes by penetrating the insect body via the respiratory or alimentary system (Ofuya & Dawodu 2002). Plant powders of S. occidentalis caused significant mortality in C. maculatus (Adesina et al 2011), and insecticidal properties of A. pyrifolium (Torres et al 2006), C. sonderianus Lima et al 2006Lima et al , 2013, A. cearensis (Farias et al 2010;Souza et al 2011), and Z. joazeiro (Souza et al 2011) have been documented in different insect species. The repellent activities of Caatinga plant powders need further study although the repellency of many other plant powders against stored pests has been reported (Elhag 2000;Kéita et al 2001;Mazzonetto & Vendramin 2003;Silva-Aguayo et al 2005;Sanon et al 2006;Kabir & Muhammad 2010).…”
Section: Repellent Activitiesmentioning
confidence: 99%
“…Plant powders can control insects by eroding the cuticle layer and causing dehydration (Kedia et al 2013); blocking the spiracles and causing asphyxiation (Denloye 2010); or impairing physiological processes by penetrating the insect body via the respiratory or alimentary system (Ofuya & Dawodu 2002). Plant powders of S. occidentalis caused significant mortality in C. maculatus (Adesina et al 2011), and insecticidal properties of A. pyrifolium (Torres et al 2006), C. sonderianus Lima et al 2006Lima et al , 2013, A. cearensis (Farias et al 2010;Souza et al 2011), and Z. joazeiro (Souza et al 2011) have been documented in different insect species. The repellent activities of Caatinga plant powders need further study although the repellency of many other plant powders against stored pests has been reported (Elhag 2000;Kéita et al 2001;Mazzonetto & Vendramin 2003;Silva-Aguayo et al 2005;Sanon et al 2006;Kabir & Muhammad 2010).…”
Section: Repellent Activitiesmentioning
confidence: 99%
“…Different results are usually reported in studies with plant insecticides, as they show a tendency to extend the larval stage (TORRES et al, 2006;SILVA et al, 2007;SOUZA et al, 2011;JESUS et al, 2011) by inhibiting or deterring feeding and other actions (MORDUE (LUNTZ); MORGAN; NISBET, 2005). Another hypothesis, reported by Rodrigues et al (2008), is that the reduction of this phase could be a form used by the pest to compensate inadequate food supply, passing to the next stage in a shorter time.…”
Section: Effect Of Lc 50 Of Extracts Of Soursop Seeds On the Biology mentioning
confidence: 83%
“…As pupas foram coletadas e acondicionadas em tubos de vidro para obtenção dos adultos. O método de condução da criação-estoque da traça-das-crucíferas foi semelhante ao relatado por Torres et al (2006). Biologia de P. xylostella por duas gerações sucessivas, criadas em folhas de cultivares de couve-fl or.…”
Section: Methodsunclassified