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ARAUJO, O. G.; MENDES, S. M.; ROSA, A. P. S. A. da; MARUCCI, R. C.; SANTOS, C. D. dos; BARBOSOA, T. A. N.; DIAS, A. S.; CARVALHO, S. S. de S.. |
Com intuito de subsidiar estratégias de manejo de pragas usando milho Bt no Rio Grande do Sul, onde são conhecidas e registradas diferentes populações de Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae), o objetivo deste trabalho foi avaliar os aspectos biológicos de populações dessa espécie provenientes de milho e arroz, oriundas de Pelotas- RS, mantidos em arroz e em milho expressando diferentes proteínas Bt. Avaliou-se sobrevivência e biomassa larval eimatura de duas populações de S. frugiperda mantidas em milho expressando proteínas Bt e em arroz. Os maiores valores de sobrevivência larval coincidiram com os maiores valores de biomassa (arroz e milho não Bt). Quanto à sobrevivência na fase imatura verificou-se que as larvas da... |
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Lagarta-do-cartucho; Manejo integrado de praga; Manejo de resistência; Praga de planta; Lagarta; Zea mays; Oryza sativa; Plant pests; Insect larvae; Integrated pest management; Resistance management; Corn; Rice. |
Ano: 2014 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1008563 |
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Sato,Mário E.; Silva,Marcos Z. da; Raga,Adalton; Souza Filho,Miguel F. de. |
Studies on artificial laboratory selections with abamectin, cross-resistance relationships, and stability of resistance were carried out with Tetranychus urticae Koch to provide basic information for an abamectin resistance management program. Selections for resistance and susceptibility to abamectin were performed in a population of T. urticae, collected from a commercial strawberry field in the State of São Paulo, Brazil. After five selections for resistance and five selections for susceptibility, susceptible (S) and resistant (R) strains of T. urticae to abamectin were obtained. The resistance ratio (R/S) at the LC50 reached 342-fold values. The toxicity of eight acaricides was evaluated in the R and S strains, observing significant differences (at... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Two-spotted spider mite; Resistance management; Chemical control. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000600016 |
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Monteiro,Lino Bittencourt; Teixeira,Rosangela; Guiloski,Izonete Cristina; Chappuis,Edson; Assis,Helena Cristina da Silva de. |
Abstract Oriental fruit moth (Grapholita molesta) is the most important pest of apple orchards in Brazil. For many years, insecticides have been the only tool used for its control. The aim of this work was to characterize the management of apple orchards by the system for Assessment of Environment Impact of Agricultural Technology Innovations (AMBITEC-AGRO) and to relate it with the resistance status of G. molesta populations. Insecticide resistance was estimated by toxicology and enzymatic activities of glutathione S-transferase (GST), esterases (a-ß EST), and acetylcholinesterase (AChE). The phytosanitary strategies adopted by the four apple production orchards in southern Brazil were analyzed in: Vacaria (RS population), Fraiburgo (SC1 population), São... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resistance management; Grapholita molesta; Susceptibility; Apple orchard. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000400402 |
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