Corn Pest
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Spatial distribution and control levels of Anastrepha spp. (Diptera: Tephritidae) in guava orchards
Abstract: This study aimed to know the patterns of spatial distribution of Anastrepha spp. and establish a criterion for determining the appropriate time for pest control. For this, 90 McPhail traps were used as Sampling Units (SU) divided into three commercial orchards of Novo Milênio guava with a total area of 14 ha. Traps were interspersed between the ro
An. Acad. Bras. Ciênc.. Publicado em: 12/08/2019
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2. Interseasonal variation of Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) populations in the Brazilian Savanna
Abstract Chrysodeixis includens (Walker, [1858]) is currently the main plusiine pest in the Americas, not only because of the damage caused to soybean, but also with several crop species in a broad geographical range. However, its population dynamics is still poorly understood, despite outbreak records that are common across different locations in the Americ
Rev. Bras. entomol.. Publicado em: 2017-12
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3. Biological characteristics of black armyworm Spodoptera cosmioides on genetically modified soybean and corn crops that express insecticide Cry proteins
ABSTRACT This study aimed to evaluate the development and reproduction of the black armyworm, Spodoptera cosmioides when larvae fed on leaves of Bt-corn hybrids, expressing a single Cry1F and also Cry1F, Cry1A.105 and Cry2Ab2 in pyramided corn and their non-Bt-isoline (hybrid 2B688), as well as on leaves of two soybean isolines expressing the Cry1Ac protein
Rev. Bras. entomol.. Publicado em: 2016-09
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4. Movement of Heterorhabditis amazonensis and Steinernema arenarium in search of corn fall armyworm larvae in artificial conditions
Spodoptera frugiperda (Smith, 1797) (Lepidoptera: Noctuidae) is considered to be the main pest of maize crops in Brazil. Entomopathogenic nematodes (EPN) may be used to control this pest and exhibit different, unique abilities to search for their hosts. The movement of EPN in relation to S. frugiperda was evaluated. To test for horizontal movement, a styrofo
Scientia Agricola. Publicado em: 2012-06
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5. DANOS DO PERCEVEJO-BARRIGA-VERDE Dichelops melacanthus (DALLAS, 1851) (HEMIPTERA: PENTATOMIDAE) NA CULTURA DO MILHO / GREEN BELLY STINK BUG Dichelops melacanthus (DALLAS, 1851) (HEMIPTERA: PENTATOMIDAE) DAMAGES IN MAIZE CROP
The research objective was to evaluate the damage caused by D. melacanthus in the initial phase of the maize crop. Two field trials were conducted in Rondonópolis, Mato Grosso, and two greenhouse trials occurred in Santa Maria, Rio Grande do Sul. In all experiments artificial infestation of cages was done using laboratory reared stink bugs. In all experimen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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6. Capacidade combinatória de linhagens para a produção de híbridos de milho com resistência a doenças foliares
As doenças foliares do milho estão entre os fatores mais limitantes à produtividade, sendo o desenvolvimento de genótipos resistentes um dos principais alvos do melhoramento genético. Os objetivos deste trabalho foram determinar o potencial genético de dez linhagens endogâmicas desenvolvidas pela Empresa GS Pesquisas, para uso como testadoras e na obt
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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7. Haplotype identification within Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) corn and rice strains from Colombia
The fall army worm Spodoptera frugiperda (Smith) is a migratory important pest of corn, sorghum, rice, grass and bermudagrass in North and South America. This species has diverged into two genetically differentiated but morphologically identical strains, "the rice" and "the corn". They have been analyzed by sequencing the genes cytochrome oxydase I, II and I
Neotropical Entomology. Publicado em: 2011-08
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8. Fatores que afetam a viabilidade das sementes.
Fatores que afetam a viabilidade das sementes; Umidade; Temperatura; Oxigenio; Especie; Armazenamento; Danos mecanicos; Condicoes ambientais antes da colheita; Pragas e doencas; Dormencia.
Londrina: EMBRAPA-CNPSo. Publicado em: 2011
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9. Parasitism by Campoletis flavicincta on Spodoptera frugiperda in corn.
Parasitism by Campoletis flavicincta (Ashmead) (Hymenoptera: Ichneumonidae) on Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) and consequent reduction of production losses were evaluated on caged corn plants in the field. Treatments consisted of plots infested with 0 (control), 15 and 30 pairs of C. flavicincta with egg masses per cage and plot infes
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Danos causados por larvas e adultos de Diabrotica speciosa (Coleoptera: Chrysomelidae) em milho.
A especie Diabrotica speciosa (Germar, 1824) e, tradicionalmente, na fase adulta, uma praga polifaga, embora apresente certa preferencia por folhas do feijoeiro e soja. Entretanto, nos ultimos anos, a fase de larva deste crisomelideo adquiriu o status de praga, a semelhanca de outras especies do mesmo genero nos EUA, causando consideraveis danos ao sistema r
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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11. Aspectos bioecológicos do coró-das-hortaliças Aegopsis bolboceridus (Thomson) (Coleoptera: Melolonthidae) no cerrado do Brasil Central.
ABSTRACT: Insects commonly well-known as white grubs are the larval phase of beetles that belong to the Melolonthidae (Coleoptera). This family contains an expressive number of insect species that have different bioecological functions in the agroecosystems in the adult and immature phases. In four of five trophic levels, they are primary and secondary consu
Planaltina. Publicado em: 2011
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12. Monitoring fruit flies (Diptera, Tephritidae) in five municipalities of the state of Goiás Brazil / Monitoramento de moscas-das-frutas (Diptera, Tephritidae) em cinco municípios no estado de Goiás
Fruit flies (Diptera, Tephritidae) are important insect pests in world fruit orchards; responsible for significant yield losses, and an obstacle to the fruit market due to quarantine restrictions imposed by importing countries. The knowledge of their population dynamics in a specific region is an important factor in insect pest management programs. Fruit fli
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/08/2010