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Registros recuperados: 13
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Abamectin resistance in Tetranychus urticae Koch (Acari: Tetranychidae): selection, cross-resistance and stability of resistance Neotropical Entomology
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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Adoption of Best Management Practices to Control Weed Resistance By Cotton, Corn, and Soybean Growers AgEcon
Frisvold, George B.; Hurley, Terrance M.; Mitchell, Paul D..
This study examined adoption of ten best management practices (BMPs) to control weed resistance to herbicides. Using data from a survey of 1,205 U.S. cotton, corn, and soybean growers, count data models were estimated to explain the total number of practices frequently adopted. Ordered probit regressions were used to explain the frequency of individual BMP adoption. Growers practicing a greater number of BMPs frequently (a) had more education, but less farming experience; (b) grew cotton, (c) expected higher yields relative to the county average; and (d) farmed in counties with a lower coefficient of variation (CV) for yield of their primary crop. Yield expectations and variability were significant predictors of the frequency of adoption of individual...
Tipo: Conference Paper or Presentation Palavras-chave: Weeds; Herbicide; Resistance management; Corn; Cotton; Soybeans; Adoption; Crop Production/Industries; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q12; Q16.
Ano: 2009 URL: http://purl.umn.edu/49432
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Aplicación localizada de spirotetramat y spiromesifen en Capsicum chinense (Jacq) y su efecto en la oviposición de Bactericera cockerelli (Sulc) (Hemíptera: Triozidae). Colegio de Postgraduados
Tucuch Haas, Jorge Ismael.
El psílido del tomate/papa Bactericera cockerelli (Sulc) (Hemiptera: Triozidae) es una de las plagas más importantes del cultivo de solanáceas en el mundo. Spirotetramat y spiromesifen ambos insecticidas son del grupo de los inhibidores de la síntesis de lípidos que se usan para combatir esta plaga y para optimizar su eficacia biológica es importante conocer sus propiedades entomotóxicas. Por tanto, se determinó el efecto de la aplicación de los dos insecticidas en la oviposición de B. cockerelli en áreas tratadas y no tratadas del follaje de plantas de chile habanero (Capsicum chinense (Jacq)). El follaje de cada planta se dividió en tres estratos: superior (21 a 30 cm distales del sustrato de la planta), medio (11 a 20 cm abajo del estrato superior) e...
Palavras-chave: Acidos tetrónicos; Inhibidores de lípidos; Paratrioza; Solanáceas; Manejo de la resistencia; Tetronic acids; Zebra chip; Inhibitors of lipids; Potato/tomato psyllid; Solanaceae; Resistance management; Entomología y Acarología; Doctorado.
Ano: 2013 URL: http://hdl.handle.net/10521/1870
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Aspectos biológicos de populações de Spodoptera frugiperda em milho Bt e arroz. Infoteca-e
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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Evaluation of genetic mixtures of sorghum lines for anthracnose resistance management Trop. Plant Pathol.
Costa,Rodrigo V. da; Casela,Carlos R; Zambolim,Laércio; Santos,Fredolino G; Vale,Francisco X. R. do.
The main objective of this work was to evaluate the diversification of sorghum (Sorghum bicolor) populations as a way to manage resistance to the sorghum anthracnose fungus Colletotrichum graminicola. A total of 18 three-way hybrids were obtained by crossing six single cross male-sterile F1 hybrids, derived by crossing A (non restorer sterile cytoplasm) and B (non restorer normal cytoplasm) lines, with three fertile R (restorer) lines, previously evaluated for their differential reaction to the pathogen. Variation in the level of resistance was observed, as indicated by the values of the area under the disease progress curve (AUDPC) obtained for each hybrid. Lines contributed differently to the level of resistance of each hybrid. All hybrids in which...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Colletotrichum graminicola; Resistance management.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000500011
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Fruit production by non-grafted and grafted passiflora edulis brs gigante amarelo in terra nova do norte, Mato Grosso, Brazil. Repositório Alice
RONCATTO, G.; WRUCK, D. S. M.; BOTELHO, S. de C. C.; OLIVEIRA, S. S.; ROMANO, M. R..
Abstract: The production of passion fruit in Mato Grosso is low in comparison with that of other Brazilian states and is insufficient to supply local demand. A key factor contributing to this poor performance is the use of mixed varieties that are susceptible to diseases such as Fusarium wilt. In this regard, cultivation of grafted plants would be advantageous in establishing healthy, homogenous and productive orchards. The aim of this study was to compare fruit production of non-grafted plants of the commercial cultivar Passiflora edulis BRS Gigante Amarelo grown under the climatic and soil conditions of Terra Nova do Norte, Mato Grosso, with the scion grafted onto rootstocks of native species/hybrids known to be resistant to Fusarium spp. Performances...
Tipo: Artigo de periódico Palavras-chave: BRS Gigante Amarelo; Mato Grosso; Terra Nova do Norte-MT; Maracujá; Passiflora; Fusarium oxysporum f. sp. apii; Resistance management.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136768
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Genetically engineered crops: importance of diversified integrated pest management for agricultural sustainability. Repositório Alice
ANDERSON, J. A.; ELLSWORTH, P. C.; FARIA, J. C.; HEAD, G. P.; OWEN, M. D. K.; PILCHER, C. D.; SHELTON, A. M.; MEISSLE, M..
As the global population continues to expand, utilizing an integrated approach to pest management will be critically important for food security, agricultural sustainability, and environmental protection. Genetically engineered (GE) crops that provide protection against insects and diseases, or tolerance to herbicides are important tools that complement a diversified integrated pest management (IPM) plan. However, despite the advantages that GE crops may bring for simplifying the approach and improving efficiency of pest and weed control, there are also challenges for successful implementation and sustainable use. This paper considers how several GE traits, including those that confer protection against insects by expression of proteins from Bacillus...
Tipo: Artigo de periódico Palavras-chave: Engenharia Genética; Resistência Genética; Adoção de Inovações; Integrated pest management; Genetically engineered microorganisms; Resistance management; Integrated weed management; Innovation adoption; Sustainability science and engineering; Genetically modified plants.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1111550
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Identifying Optimum Herbicide Mixtures to Manage and Avoid Fenoxaprop-p-Ethyl Resistant Phalaris minor in Wheat Planta Daninha
ABBAS,T.; NADEEM,M.A.; TANVEER,A.; AHMAD,R..
ABSTRACT Use of herbicide mixtures has been advocated as most effective strategy for avoidance and management of herbicide resistant weeds. Effect of twelve selected treatments of four herbicides (clodinafop-propargil, metribuzin, pinoxaden and sulfosulfuron) two-way mixtures at different doses was investigated against fenoxaprop-p-ethyl resistant and susceptible populations of P. minor grown along the wheat plants. In repeated experiment, herbicides mixtures were applied at 3 to 4 leaf stage of P. minor under greenhouse conditions. All the herbicide mixtures were effective to control resistant as well as susceptible P. minor. Mixtures having 75% lethal dose of each mixture component provided best control against P. minor. Mixtures with 50% lethal dose of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbicide mixtures; Resistance management; Resistance avoidance; Triticum aestivum; Erva-cabecinha.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400787
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Índice de adaptação e tempo letal da lagarta-do-cartucho em milho Bt. Repositório Alice
WAQUIL, M. S.; PEREIRA, E. J. G.; CARVALHO, S. S. de S.; PITTA, R. M.; WAQUIL, J. M.; MENDES, S. M..
O objetivo deste trabalho foi avaliar o índice de adaptação e o tempo letal de populações da lagarta?do?cartucho [Spodoptera frugiperda (Lepidoptera: Noctuidae)] em milho Bt que expressa as proteínas Cry1Ab, Cry1F, Cry1A.105/Cry2Ab2 e Vip3Aa20. Três bioensaios foram conduzidos com lagartas coletadas em Inhaúma, MG, e em Sinop, MT. As lagartas dessas populações foram alimentadas com folhas de milho não Bt e Bt. As seguintes variáveis foram avaliadas: sobrevivência larval, biomassa de pupas e período de desenvolvimento larval. Em seguida, foram calculados os índices de adaptação e o tempo letal dessas populações. Para a análise do tempo letal, também foram utilizados dados de mortalidade de uma população obtida de milho Bt Cry1F em Piumhi, MG. O milho Bt...
Tipo: Artigo de periódico Palavras-chave: Manejo da resistência; Manejo integrado de praga; Milho transgênico; Larval performance; Transgenic corn.; Spodoptera Frugiperda; Zea Mays.; Resistance management; Integrated pest management..
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1052546
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Insecticide resistance and control failure likelihood among populations of the boll weevil (Anthonomus grandis) from Mato Grosso (Brazil) Agronomy
Oliveira-Marra, Sharrine Omari Domingues; Guedes, Raul Narciso Carvalho; Bastos, Cristina Schetino; Marra, Pedro Henrique Alves; Vivan, Lucia Madalena; Zanine, Anderson de Moura.
The cotton producers from southern Mato Grosso are currently experiencing control failure with the use of the use of insecticides against the cotton boll weevil Anthonomus grandis Boheman, the main pest species of this commodity. Therefore, the present study was designed to survey insecticide resistance and the associated likelihood of control failure among boll weevil populations in the region. Ten insect populations were sampled during the 2016/2017 season and subjected to time-mortality (contact) bioassays in glass vials impregnated with dried insecticide residues at their respective label rates. The three insecticides most frequently used in the region were surveyed: the organophosphate malathion and the pyrethroids beta-cyfluthrin and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical control; Cotton pest; Resistance management; Survival time; Susceptibility and sustainable pest management..
Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42714
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Linha Básica de Suscetibilidade de Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) a Benzoato de Emamectina. Repositório Alice
NUNES, N. R.; FERREIRA, F. T. R.; THIESEN, L. V.; CORASSA, J. N.; PITTA, R. M..
Emamectin Benzoate was registered recently in Brazil to control Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) in soybean. We studied the baseline susceptibility of Mato Grosso populations of C. includes to support Insect Resistance Management programs by standard feeding assays on insecticide-surface of artificial diet. Variation in susceptibility between populations was low. The LC50 values from 11 populations varied between 0.015 a 0.065 μg i.a. cm-2. Based on our results, we propose the discriminant concentration of 2.867 μg i.a. cm-2 of emamectin benzoate to monitor insecticide resistance in C. includes.
Tipo: Artigo de periódico Palavras-chave: Feijao capi; Mato Grosso; Girassol; Resistance management; Monitoring; Avermectins; Soybeans.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1120213
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Resistance of oriental fruit moth (Lepidoptera: tortricidae) to insecticides in apple orchards in southern Brazil Rev. Bras. Frutic.
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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Stability and tissue-specific Cry10Aa overexpression improves cotton resistance to the cotton boll weevil. Repositório Alice
RIBEIRO, T. P.; BASSO, M. F.; CARVALHO, M. H. de; MACEDO, L. L. P. de; SILVA, D. M. L. da; LOURENCO-TESSUTTI, I. T.; OLIVEIRA-NETO, O. B. de; CAMPOS-PINTO, E. R. de; LUCENA, W. A.; SILVA, M. C. M. da; TRIPODE, B. M. D.; ABREU-JARDIM, T. P. F.; MIRANDA, J. E.; ALVES-FERREIRA, M.; MORGANTE, C. V.; GROSSI-DE-SA, M. F..
The cotton boll weevil (CBW, Anthonomus grandis) is the most destructive cotton insect pest affecting cotton crops. To overcome this problem, CBW-resistant genetically modified cotton plants overexpressing Bacillus thuringiensis entomotoxins were successfully obtained. Previous results showed that the overexpression of Cry10Aa protoxin led to high mortality of the CBW larvae in greenhouse conditions. In this study, we advanced three more generations (T2 to T4), with several cotton events constitutively overexpressing the Cry10Aa protoxin, and the transgene stability and agronomic performance were investigated. In addition, stable transgenic cotton overexpressing the Cry10Aa active (Cry10Aa protoxin lacking the -helix N-terminal) driven by cotton flower...
Tipo: Artigo de periódico Palavras-chave: Praga de inseto; Resistência gestão; Bacillus; Bicudo do algodão; Herança estável; Algodão; Inseto; Praga; Praga de Planta; Insect pests; Resistance management; Cotton.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125667
Registros recuperados: 13
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