Corn Pests
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. Egg parasitoid wasps as natural enemies of the neotropical stink bug Dichelops melacanthus.
Abstract ? The objective of this work was to determine the potential of five species of Scelionidae wasps ? Telenomus podisi, Trissolcus basalis, Trissolcus urichi, Trissolcus teretis and Trissolcus brochymenae ? as natural enemies of the neotropical stink bug Dichelops melacanthus, and to determine if the presence of eggs of other stink bug species influenc
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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14. 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
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15. Controle de Sitophilus zeamais (Coleoptera: curculionidae) em variedades de milho crioulo com uso de plantas inseticidas
Os cereais representam 90% dos grãos produzidos no mundo e são a principal fonte de alimentos para os seres humanos e animais de criação. Entre os cereais, o milho é a agricultura mais difundida e cultivada no mundo, devido à sua capacidade de adaptação aos mais diferentes ecossistemas. A manutenção da qualidade do grão de milho após a colheita �
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/08/2010
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16. Bt CORN AND INSECTICIDES IN MANAGEMENT OF LEPIDOPTEROUS PESTS / MILHO Bt E INSETICIDAS NO MANEJO DE LEPIDÓPTEROS-PRAGA
O objetivo do estudo foi avaliar: o efeito da toxina Bt e do tratamento de semente com inseticidas (imidacloprido + tiodicarbe), no crescimento inicial das plantas de milho e no controle de Spodoptera frugiperda (J. E. Smith) no solo; o efeito do milho Bt e dos inseticidas (imidacloprido + tiodicarbe em tratamento de semente e novalurom e/ou metomil em pulve
Publicado em: 2010
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17. Interaction of Metarhizium anisopliae (Metsch), Beauveria bassiana (Bals.) and granulovirus, the main pathogens of Diatraea saccharalis (Fabr., 1794) (Lepidoptera: Crambidae) / Interação de Metarhizium anisopliae (Metsch.), Beauveria bassiana (Bals.) e vírus da granulose, principais patógenos de Diatraea saccharalis (Fabr., 1794) (Lepidoptera: Crambidae)
The sugarcane borer, Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae) is naturally infected by various pathogens, the most important are Metarhizium anisopliae (Metsch) (Ascomycota: Clavicipitaceae), Beauveria bassiana (Bals.) (Ascomycota: Cordycipitaceae) and granulovirus. These microorganisms may coinfect the same host under field conditions
Publicado em: 2010
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18. Monitoramento e caracterização da população epifítica de Pantoea ananatis, agente causal da mancha branca do milho
A bactéria Pantoea ananatis, foi descrita recentemente como sendo agente causal da Mancha Branca do Milho. Os sintomas caracterizam-se inicialmente por lesões iniciais cloróticas aquosas, que se tornam necróticas de coloração palha. Este trabalho teve como objetivo, monitorar a população epifítica da bactéria, sob condições naturais de infestaç�
Publicado em: 2010
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19. Feromônios de insetos: tecnologia e desafios para uma agricultura competitiva no Brasil
Pheromones are chemical compounds used by species to communicate intra and inter specifically. As strategy of integrated pest management (IPM), the use of these compounds allows the monitoring of target insects that results in more reliable interventions and consequently avoiding unnecessary use of pesticides. In certain crops these compounds are used as a c
Quím. Nova. Publicado em: 2009
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20. Viability of artificial diets and preys for Eriopis connexa (Germar) (Coleoptera: Coccinellidae) / Viabilidade de dietas artificiais e presas para Eriopis connexa (Germar) (Coleoptera: Coccinellidae)
This research was conducted in the Laboratory of Insects Rearing (LACRI), of the Brazilian Company of Agricultural Research (EMBRAPA Maize and Sorghum Research Center) in Sete Lagoas, Minas Gerais State, Brazil. The objective was to study biological aspects of the immature phase of Eriopis connexa (Germar) (Coleoptera: Coccinellidae), with different artifici
Publicado em: 2009
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21. Seleção e caracterização de estirpes de Bacillus thuringiensis tóxicas à spodoptera eridania (Cramer), Spodoptera cosmioides (Walker) e Spodoptera frugiperda (smith) (Lepidoptera: noctuidae)
Among the pests of cultivated plants the species of the gender Spodoptera is one of the most important. Spodoptera cosmioides and Spodoptera eridania were reported as cotton (Gossypium hirsutum) and soybean pests (Glycine max), while Spodoptera frugiperda corn (Zea mays) and cotton pests. The objectives of this research were select strains of Bacillus thurin
Publicado em: 2008
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22. 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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23. Resíduos de fenitrotion e esfenvalerato em grãos de milho e trigo, em alguns de seus produtos processados e sua ação residual sobre Sitophilus oryzae (L., 1763), Sitophilus zeamais Motsch.,1855 (Coleoptera: Curculionidae) e Rhyzopertha dominica (Fabr.,1792) (Coleoptera: Bostrichidae) / Fenitrothion and esfenvalerate residues in corn and wheat grain and in some of their processed products, and residual action on Sitophilus oryzae (L., 1763), Sitophilus zeamais Motsch., 1855 (Coleoptera: Curculionidae), and Rhyzopertha dominica (Fabr., 1792) (Coleoptera: Bostrichidae)
Because of the problems caused by insects in storehouses, chemicals have been chiefly used in Brazil to control these pests. However, success in solving problems with pests has been limited. In view of this, some aspects about stored grain protection were studied, among which are the following: 1) spray volume effect on grain moisture content, 2) stability o
Publicado em: 2006
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24. Impacto de sistemas e sucessão de cultivos em artrópodes associados à cultura do feijão / Impact of cropping systems and succession of cultivation on arthropods associated to the bean culture
This work aimed to evaluate, in two experiments, the impact of cropping systems, succession of cultivation and herbicides application on the arthropods community in bean culture. In the first experiment, it was evaluated the impact of the systems (no-tillage and conventional tillage) and the succession of cultivation (succession to corn destined to the produ
Publicado em: 2006