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Caracterização dos danos de Spodoptera eridania (Cramer) e Spodoptera cosmioides (Walker) (Lepidoptera: Noctuidae) a estruturas de algodoeiro Neotropical Entomology
Santos,Karen B dos; Meneguim,Ana M; Santos,Walter J dos; Neves,Pedro M O J; Santos,Rachel B dos.
The cotton plant, Gossypium hirsutum, hosts various pests that damage different structures. Among these pests, Spodoptera cosmioides (Walker) and Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) are considered important. The objectives of this study were to characterize and to quantify the potential damage of S. eridania and S. cosmioides feeding on different structures of cotton plants. For this purpose, newly-hatched larvae were reared on the following plant parts: leaf and flower bud; leaf and boll; flower bud or boll; and leaf, flower bud and boll. The survival of S. cosmioides and S. eridania was greater than 80% and 70% for larvae fed on cotton plant parts offered separately or together, respectively. One larva of S. eridania damaged 1.7 flower...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Cotton pest; Flower damage; Boll damage.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000400025
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The lesser cotton leafworm, Anomis impasta (Guenée) (Lepidoptera, Noctuidae), in cotton Rev. Bras. entomol.
Santos,Roberta L. dos; Torres,Jorge B.; Pontes,Itillio V. A. F.; Barros,Eduardo M.; Bastos,Cristina S..
Anomis impasta (Guenée) is a species that shows remarkable morphological and behavioral similarities with the cotton leafworm Alabama argillacea (Hübner). During two growing cotton seasons, A. impasta was observed feeding on leaves and flower bracts of cotton and monitored. Furthermore, a study was conducted under laboratory conditions to generate biological information about this species with larvae feeding cotton squares and leaves. Larvae fed on cotton squares exhibited delayed development (18.5 ± 0.18 days) and lower pupal weight (140.8 ± 2.26 mg) compared to larvae fed on cotton leaves (14.0 ± 0.07 days and 169.3 ± 2.06 mg). Thus, one generation cycle of A. impasta was obtained by feeding the larvae with cotton leaves. The mean (minimum-maximum)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biology; Cotton pest; Intercropping; Noctuidae.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000400015
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Boll weevil within season and off-season activity monitored using a pheromone-and-glue reusable tube trap Scientia Agricola
Neves,Robério Carlos dos Santos; Torres,Jorge Braz; Barros,Eduardo Moreira; Vivan,Lúcia Madalena.
ABSTRACT: The boll weevil colonizes cotton fields as early as cotton squaring, causing significant losses due to feeding and protected development inside fruiting structures throughout crop phenology. Successful control depends on control of adults and their accurate detection when they colonize the crops. The commercial trap and boll weevil attract-and-control tubes (BWACT) are the only available tools to monitor and attract-and-kill boll weevil, despite limitation in efficacy, and insecticide in BWACT is not allowed in organic production. A grandlure-and-glue reusable and insecticide-free tube (GGT) made with polyvinyl chloride tube, smeared with entomological glue, and lured with pheromone was tested to detect boll weevil activity across various...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthonomus grandis; Control threshold; Cotton pest; Survey.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000400313
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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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Nymphicidal and Ovipositional Efficacy of Seaweed Sargassum tenerrimum (J. Agardh) against Dysdercus cingulatus (Fab.) (Pyrrhocoridae) Chilean J. Agric. Res.
Sahayaraj,Kitherian; Jeeva,Y. Mary.
We investigated the role of a brown seaweed alga, Sargassum tenerrimum (J. Agardh), against Dysdercus cingulatus (Fab.), which is an economically important cotton pest in many parts of Asia. Sargassum tenerrimum has been used as a source of fertilizers and drugs, but there is no information available in the literature about its use in ecofriendly pest management. The impact of benzene (BN), chloroform (CH), and a mixture of benzene and chloroform (BNCH) extracts, as well as two chromatographic fractions of BNCH (FR1 and FR2) were investigated for their insecticidal and ovipositional properties against D. cingulatus. The BE extract showed the best insecticidal activity (LC50 = 0.009%), higher than BNCH (LC50 = 0.021%) and CH extracts (LC50 = 0.2481%), and...
Tipo: Journal article Palavras-chave: Cotton pest; Nymphicidal; Ovipositional; Seaweed; Pest management.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100024
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