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| Registros recuperados: 19 | |
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| RAMALHO, F. de S.; MALAQUIAS, J. B.; SANTOS, B. D. B. DOS; FERNANDES, F. S.; ZANUNCIO, J. C.. |
| The fennel aphids, Hyadaphis foeniculi (Passerini) (Hemiptera: Aphididae) attack umbels and may thus,cause to failure of fruit setting and also attack during the phase of seed development. Our research investigated the severity of biomass, seed and essential oil damages related to infestation by the fennel aphid, H. foeniculi in fennel (Foeniculum vulgare Miller) plots and plots of fennel intercropped with cotton with colored fibers. A randomized complete block design was used with four treatments: (1) two rows offennel: three rows of cotton (2F: 3C) (non-treated plot), (2) two rows of fennel: three rows of cotton (2F:3C) (treated plot), (3) fennel (F) (non-treated plot), and (4) fennel (F) (treated-plot), with four replications.The average of the weight... |
| Tipo: Artigo de periódico |
Palavras-chave: Hyadaphis foeniculi; Seed.; Algodão; Semente; Hemiptera; Foeniculum vulgare; Biomass; Cotton.. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1041105 |
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| MALAQUIAS, J. B.; OMOTO, C.; RAMALHO, F. de S.; GODOY, W. A. C.; SILVEIRA, R. F.. |
| This study sought to provide relevant information for developing effective programs to manage Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) resistance to insecticides by quantifying and describing the interactions between cotton Bt and Podisus nigrispinus (Dallas) (Heteroptera; Pentatomidae) in the management of lambda-cyhalothrin resistance in S. frugiperda fed Bt cotton leaves expressing Cry1Ac (Bollgard, Monsanto, St Louis, MO, USA). These effects were assayed by studying functional responses. Third instar S. frugiperda larvae were used for the following treatments: strains resistant (1) or susceptible (2) to lambda-cyhalothrin fed Bollgard cotton leaves and strains resistant (3) or susceptible (4) to lambdacyhalothrin fed non-Bt cotton... |
| Tipo: Artigo de periódico |
Palavras-chave: Spodoptera frugiperda; Cotton.. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1041062 |
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| SANTOS, B. D. B DOS.; RAMALHO, F. de S.; MALAQUIAS, J. B.; LIRA, A. C. S.; PACHÚ, J. K. S.; FERNANDES, F. S.; ZANUNCIO, J. C.. |
| The functional response of a predator to the density of its prey is affected by several factors, including the prey?s developmental stage. This study evaluated the functional response of Podisus nigrispinus (Dallas) (Hemiptera: Heteroptera: Pentatomidae) females to fourth instars and pupae of Alabama argillacea (H?ubner) (Lepidoptera: Noctuidae), an important pest of cotton (Gossypium hirsutum L., Malvaceae) in Brazil. The prey were exposed to the predator for 12 and 24 h, and in densities of 1, 6, 12, 18, 24, and 30 items per predator female. The predation data were subjected to polynomial regression logistic analysis to determine the type of functional response. Holling and Rogers? equations were used to estimate parameters such as attack rate and... |
| Tipo: Artigo de periódico |
Palavras-chave: Lepídoptera noctuidae.; Hemíptera; Gossypium hirsutum; Podisus nigrispinus; Cotton.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1041200 |
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| SANTOS, B. D. B. dos; RAMALHO, F. de S.; MALAQUIAS, J. B.; LIRA, A. C. S.; PACHÚ, J. K. S.; FERNANDES, F. S.; ZANUNCIO, J. C.. |
| The functional response of a predator to the density of its prey is affected by several factors, including the prey?s developmental stage. This study evaluated the functional response of Podisus nigrispinus (Dallas) (Hemiptera: Heteroptera: Pentatomidae) females to fourth instars and pupae of Alabama argillacea (H?ubner) (Lepidoptera: Noctuidae), an important pest of cotton (Gossypium hirsutum L., Malvaceae) in Brazil. The prey were exposed to the predator for 12 and 24 h, and in densities of 1, 6, 12, 18, 24, and 30 items per predator female. The predation data were subjected to polynomial regression logistic analysis to determine the type of functional response. Holling and Rogers? equations were used to estimate parameters such as attack rate and... |
| Tipo: Artigo de periódico |
Palavras-chave: Gossypium hirsutum; Algodão; Hemiptera; Cotton. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1066089 |
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| MALAQUIAS, J. B.; RAMALHO, F. de S.; DIAS, C. T. dos S.; BRUGGER, B. P.; LIRA, A. C. S.; WILCKEN, C. F.; PACHÚ, J. K. S.; ZANUNCIO, J. C.. |
| The relationship between pests and natural enemies using multivariate analysis on cotton in different spacing has not been documented yet. Using multivariate approaches is possible to optimize strategies to control Aphis gossypii at different crop spacings because the possibility of a better use of the aphid sampling strategies as well as the conservation and release of its natural enemies. The aims of the study were (i) to characterize the temporal abundance data of aphids and its natural enemies using principal components, (ii) to analyze the degree of correlation between the insects and between groups of variables (pests and natural enemies), (iii) to identify the main natural enemies responsible for regulating A. gossypii populations, and (iv) to... |
| Tipo: Artigo de periódico |
Palavras-chave: Aphids.; Praga; Inimigo natural; Algodão; Aphis Gossypii.; Cotton; Pests; Natural enemies; Chrysoperla externa.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084168 |
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| RAMALHO, F. de S.; MALAQUIAS, J. B.; LIRA, A. C. S.; OLIVEIRA, F. Q.; ZANUNCIO, J. C.; FERNANDES, F. S.. |
| Hyadaphis foeniculi (Passerini) (Hemiptera: Aphididae) is a cosmopolitan species and the main pest of fennel in northeastern Brazil. Understanding the relationship between temperature variations and the population growth rates of H. foeniculi is essential to predict the population dynamics of this aphid in the fennel crop. The aim of this study was to measure the effect of constant temperature on the adult prereproductive period and the life table fertility parameters (infinitesimal increase ratio (rm), gross reproduction rate (GRR), net reproduction rate (R0), finite increase ratio (?), generation time (GT), the time required for the population to double in the number of individuals (DT), and the reproduction value (RVx)) of the fennel pest H. foeniculi.... |
| Tipo: Artigo de periódico |
Palavras-chave: Hemiptera aphididae; Hyadaphis foeniculi; Aphid. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1041166 |
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| Registros recuperados: 19 | |
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