Fall Armyworm Resistance
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Resistance of maize landraces from Brazil to fall armyworm (Lepidoptera: Noctuidae) in the winter and summer seasons
ABSTRACT The fall armyworm (Spodoptera frugiperda) is a major maize (Zea mays L.) pest in Brazil, whose larvae cause losses from plant emergence to harvesting stage. This pest has been controlled almost exclusively with chemical insecticides and Bt plants (transgenics); however, resistance evolution has been detected to these two control tactics. Therefore,
Bragantia. Publicado em: 2020-09
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2. Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm
ABSTRACT The objective of this study was to estimate the varietal and heterotic effects related to grain yield, popping expansion and resistance of popcorn against fall armyworm. Twelve open-pollinated varieties were intercrossed in a complete diallel mating scheme. The 66 experimental hybrids, together with their parents and controls Zapalote Chico, BRS 103
Rev. Ceres. Publicado em: 2020-08
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3. Insecticidal activity of essential oils in controlling fall armyworm, Spodoptera frugiperda
RESUMO: A lagarta-do-cartucho, Spodoptera frugiperda (Lepdoptera: Noctuidae), é uma das principais pragas na cultura do milho e nos últimos anos vem desenvolvendo resistência a produtos químicos e à tecnologia Bt. Métodos alternativos de controle, como o emprego de óleos essenciais, são um passo importante na implementação de estratégias de manejo
Arq. Inst. Biol.. Publicado em: 29/07/2019
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4. Multivariate analysis reveals key traits of fall armyworm resistance in tropical popcorn genotypes
ABSTRACT In the present study it is hypothesized that the germplasm of popcorn of tropical regions shows resistance to FAW, and the multivariate analysis can characterize the main traits of this resistance. Thus, the aim of this study was to identify key traits used to select fall armyworm resistance in popcorn by using factor and cluster analyses. Sixteen b
Bragantia. Publicado em: 11/04/2019
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5. Efeito da resistência de Spodoptera frugiperda (J.E.Smith, 1797) (Lepidoptera: Noctuidae) a lambda-cyhalothrin na interação com o milho geneticamente modificado (MON810) e na resposta imunológica ao parasitismo por Campoletis af / Effect of resistance of Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) to lambda-cyhalothrin on the interaction with genetically modified maize (MON810) and the immune response to parasitization by Campoletis aff. flavicincta (Hymenoptera: Ichneumonidae)
Fitness costs of insect resistance to insecticides can be exploited by integrating other pest control strategies in Integrated Pest Management (IPM) programs. The objective of this research was to evaluate the existence of fitness costs associated with the resistance of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) to the pyrethroid insecticid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2012
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6. Prospecção química de genótipos de milho com resistência à spodoptera frugiperda
Maize (Zea mays L.) is used by the human being for ages, presenting great importance for the worldwide economy as one of the main food sources. The search of an increased productivity focus on the analysis and combat of the factors that contribute for the losses. Fall armyworm (Spodoptera frugiperda) is the main plague of maize production in the United State
Publicado em: 2010
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7. Action of some insecticides with sterilizing properties on Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) and its predator Doru luteipes (Scudder, 1876) (Dermaptera: Forficulidae) / Ação de alguns inseticidas com propriedades esterilizantes sobre Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) e seu predador Doru luteipes (Scudder, 1876) (Dermaptera: Forticulidae)
The fall armyworm, Spodoptera frugiperda (Smith, 1797) (Lepidoptera: Noctuidae), is an important pest of the maize culture. In the tropical area, it causes severe damages, reducing the income from grains by up to 60%. Its control is normally carried out by the application of conventional insecticides, but this method is not recommended due to the negative as
Publicado em: 2007
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8. Influence of parasitism by Chelonus insularis Cresson (Hymenoptera: Braconidae) on the susceptibility of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) to insecticides
The egg-larval parasitoid Chelonus insularis Cresson is a key parasitoid of the fall armyworm Spodoptera frugiperda (J. E. Smith) during the second field generation in the upper Magdalena River Basin, Colombia. In spite of selection pressure, the higher susceptibility of the second generation fall armyworm larvae to insecticides, compared with that of the fi
Neotropical Entomology. Publicado em: 2006-12
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9. Effect of silicon on the resistance of corn plants to Rhopalosiphum maidis (Fitch.) (Hemiptera: Aphididae) and its interaction with insecticide in the control of Spodoptera frugiperda (J.E.Smith) (Lepidoptera: Noctuidae) / Efeito do silÃcio na resistÃncia de plantas de milho a Rhopalosiphum maidis (Fitch.) (Hemiptera: Aphididae) e sua interaÃÃo com inseticida no controle de Spodoptera frugiperda (J.E.Smith) (Lepidoptera: Noctuidae)
The action of pest insects is one of the factors responsible for the low level of yield of the corn in Brazil, and in this context, the corn aphid and the fall armyworm are considered the main corn pests. The control, chiefly, of the fall armyworm is accomplished almost exclusively by insecticide applications, which can cause, inclusive, damages to the envir
Publicado em: 2006
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10. Damage and biology of Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: noctuidae) on maize genotypes. / Danos e biologia de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) em genótipos de milho.
Plant resistance is a usefui component of integrated pest management and its value has been increasing in plant breeding programs, ln this study, 12 maize genotypes were evaluated to damage of fali armyworm Spodoptera frugíperda (J.E. Smith, 1797) in field conditions. The effect of these genotypes on fali armyworm biology was evaluated in laboratory conditi
Publicado em: 2002
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11. Linha básica de suscetibilidade de Spodoptera frugiperda (Lepidoptera: Noctuidae) a Lufenuron na cultura do milho. / Baseline susceptibility of Spodoptera frugiperda (Lepidoptera: Noctuidae) to Lufenuron in corn.
Lufenuron is a newly benzoylphenyl urea chitin synthesis inhibitor insecticide. The use of this compound to control Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae) has increased significantly in the past years. This increase can be attributed to its high activity against S. frugiperda and to the reduction of efficacy due to resistance to some trad
Publicado em: 2002