Relevant bibliographies by topics / European corn borer – Physiological effect

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Academic literature on the topic 'European corn borer – Physiological effect'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "European corn borer – Physiological effect"

1

Gatch, E. W., R. L. Hellmich, and G. P. Munkvold. "A Comparison of Maize Stalk Rot Occurrence in Bt and Non-Bt Hybrids." Plant Disease 86, no. 10 (October 2002): 1149–55. http://dx.doi.org/10.1094/pdis.2002.86.10.1149.

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Stalk rots, caused by a complex of fungal species, are among the most widespread and destructive diseases of maize. Larvae of the European corn borer (ECB) (Ostrinia nubilalis) promote stalk rot development by creating entry points for fungi, serving as vectors of pathogens, and causing physiological stress that may predispose plants to stalk decay. Field experiments were conducted in 1998, 1999, and 2000 to determine whether the use of transgenic Bt hybrids expressing insecticidal proteins would influence stalk rot symptoms (pith disintegration, pith discoloration, and lodging). Five hybrids representing different Bt types (or “Bt events”) (176, BT11, MON810, DBT418, and CBH351) were paired with their near-isogenic, non-Bt counterparts and subjected to treatments of manual and natural infestation with ECB larvae. Manual infestation resulted in significantly more ECB tunneling than natural infestation in 1998 and 1999 and significantly more lodging in 1998. There were significant linear correlations between ECB injury and stalk rot symptoms in non-Bt hybrids in 1998 and 1999, but not in 2000. A standard foliar insecticide treatment for ECB did not significantly affect stalk rot symptoms. In 1998, Bt hybrids had significantly less ECB tunneling, stalk discoloration, pith disintegration, and lodging compared with non-Bt hybrids, but these effects depended upon the Bt event and the infestation treatment. Similar but less pronounced effects of Bt events were observed in 1999. The 2000 results were more variable; the amount of pith disintegration was significantly lower but discoloration was significantly higher in the BT11 hybrid compared with its non-Bt counterpart, and the amount of lodging was significantly higher in the event 176 hybrid compared with its non-Bt counterpart. The ratio of stalk strength to grain weight did not consistently differ between Bt and non-Bt hybrids. These results indicate that, although specific Bt events in some years may cause reductions in stalk rot, the overall effect of Bt transformation on stalk rot occurrence is highly variable.
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Feng, Ziding, Raymond I. Carruthers, Timothy S. Larkin, and Donald W. Roberts. "A PHENOLOGY MODEL AND FIELD EVALUATION OF BEAUVERIA BASSIANA (BALS.) VUILLEMIN (DEUTEROMYCOTINA: HYPHOMYCETES) MYCOSIS OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (HBN.) (LEPIDOPTERA: PYRALIDAE)." Canadian Entomologist 120, no. 2 (February 1988): 133–44. http://dx.doi.org/10.4039/ent120133-2.

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AbstractA simulation model was developed to predict the timing of European corn borer, Ostrinia nubilalis (Hbn.), larval mortality following exposure to Beauveria bassiana (Bals.) Vuillemin conidia. Model response was compared with laboratory and field data collected specifically for model validation. In laboratory validation experiments, four conidial doses of a B. bassiana isolate collected from the People’s Republic of China were applied to European corn borer larvae which were then incubated at fluctuating temperatures. Simulation results compared favorably with fungal development and mycosis under laboratory conditions. Field validation experiments showed that applications of B. bassiana to European corn borer neonates in whorl-stage corn resulted in mortality levels over 60% when conidia and European corn borers were placed on the plants on the same day. When B. bassiana conidia were placed on plants prior to European corn borers, mortality decreased linearly with time. Model predictions of the timing of European corn borer mortality were found to be accurate when B. bassiana conidia were placed on corn plants at the same time or prior to European corn borers. When European corn borers were placed on plants prior to conidia, the model underestimated the time to European corn borer death. Lack of model fit in this situation is thought to be due to delayed host and pathogen interactions on the corn plant rather than poor prediction of the physiological development of the disease.
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Hudon, M., G. Bourgeois, G. Boivin, and D. Chez. "Yield reductions in grain maize associated with the presence of European corn borer and Gibberella stalk rot in Québec." Phytoprotection 73, no. 3 (April 12, 2005): 101–10. http://dx.doi.org/10.7202/706026ar.

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The impact of European corn borer (Ostrinia nubilalis) [Lepidoptera: Pyralidae] infestation and stalk rot infection caused by Gibberella zeae on yield of eight grain maize (Zea mays) inbreds, two commercial and six experimental hybrids was evaluated from 1975 to 1980. Three criteria were used: leaf feeding, total plant damage at harvest and tunnel length/plant height ratio. For most criteria, the cultivars were significantly different and the artificial European corn borer infestation had an effect almost every year. Although G. zeae can have a signifiant effect on plant damage at harvest and yield of grain maize, no consistent link was found between stalk rot and European corn borer.
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Weber, Donald C., Francis X. Mangan, David N. Ferro, and Herbert V. Marsh. "Effect of Weed Abundance on European Corn Borer (Lepidoptera: Pyralidae) Infestation of Sweet Corn." Environmental Entomology 19, no. 6 (December 1, 1990): 1858–65. http://dx.doi.org/10.1093/ee/19.6.1858.

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Berry, E. C., and G. M. Ghidiu. "Effect of Conservation Tillage on European Corn Borer (Lepidoptera: Pyralidae) Populations." Environmental Entomology 18, no. 6 (December 1, 1989): 917–20. http://dx.doi.org/10.1093/ee/18.6.917.

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6

McGuire, Michael R., Robert L. Gillespie, and Baruch S. Shasha. "Survival of Ostrinia nubilalis (Hübner) After Exposure to Bacillus thuringiensis Berliner Encapsulated in Flour Matrices2." Journal of Entomological Science 29, no. 4 (October 1, 1994): 496–508. http://dx.doi.org/10.18474/0749-8004-29.4.496.

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Two types of pregelatinized corn flour were used to produce granules containing Bacillus thuringiensis Berliner subsp. kurstaki and various additives for control of the European corn borer, Ostrinia nubilalis (Hübner), in the whorl of corn plants. Laboratory-reared larvae were applied to corn whorls in the greenhouse and field, and a high natural infestation occurred at one field site (Champaign). In the greenhouse and at all three field sites, five of these formulations were just as effective as Dipel 10G, a commercially available B. thuringiensis product, for control of European corn borer larvae. In all greenhouse studies and at one of the three field sites (Champaign), the dose of B. thuringiensis could be reduced by as much as 75% when a phagostimulant was added to flour granules without significant loss of corn borer control. The phagostimulant dose response was not observed at the other two field sites in which larval infestations were relatively low. Flour type had no significant effect on European corn borer control under greenhouse and field conditions. Greenhouse evaluations provided results significantly similar to results from two of the field sites indicating the usefulness of the technique. The data presented highlight the versatility and potential for using novel formulation techniques for enhancing the efficacy of B. thuringiensis.
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Bartels, David W., William D. Hutchison, Vincent A. Fritz, and George R. Klacan. "Effect of Bacillus thuringiensis Application Interval on European Corn Borer (Lepidoptera: Pyralidae) Control in Sweet Corn." Journal of Entomological Science 30, no. 3 (July 1, 1995): 374–89. http://dx.doi.org/10.18474/0749-8004-30.3.374.

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Ground-applied treatments of two commercial Bacillus thuringiensis subsp. kurstaki formulations (MVP and Dipel ES) and tank-mixes with a pyrethroid (Ambush 2E) were evaluated for control of European corn borer, Ostrinia nubilalis (Hübner), larvae in sweet corn. Treatments were applied at average intervals of 3.4, 5, 7, and 10 days to determine field persistence. Manual infestations of first-instar O. nubilalis were used to augment natural populations. During both years, there were no significant interactions between application interval and treatment for all dependent variables tested, including late instars per ear, percent marketability, yield, and predator density. Regardless of application interval, MVP provided greater larval control than Dipel ES. However, the decline in efficacy of the encapsulated MVP formulation occurred at the same rate as that of the non-encapsulated Dipel ES formulation over the 3.4 to 10-d intervals. Tank-mixes of B. thuringiensis + low-rate permethrin provided no additional control compared with low-rate permethrin alone. Given the infestation levels present in this test, neither B. thuringiensis formulation provided control sufficient to maintain current processor standards of 5–10% infested ears at harvest.
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8

Klun, Jerome A., Ashot P. Khrimian, and James E. Oliver. "Evidence of Pheromone Catabolism Via β-Oxidation in the European Corn Borer (Lepidoptera: Crambidae)." Journal of Entomological Science 33, no. 4 (October 1, 1998): 400–406. http://dx.doi.org/10.18474/0749-8004-33.4.400.

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Experiments were conducted using tritiated European corn borer, Ostrinia nubilalis (Hübner), pheromone, (Z)-[11,12-3H2]-11-tetradecen-1-ol acetate, a tritiated fluorinated analog of the European corn borer pheromone, 2-fluoro-(Z)-[11,12-3H2]-11-tetradecen-1-ol acetate, and methyl-4-bromocrotonate (MBC) to determine if pheromone catabolism proceeds on the moth's antennae via the β-oxidation pathway of fatty acid degradation. When antennae were treated with tritiated natural pheromone plus MBC (a precursor of the known β-oxidation inhibitor, 4-bromocrotonic acid), catabolism of the pheromone was significantly inhibited. When the 2-fluoro pheromone analog was applied alone to antennae, it was hydrolyzed to the corresponding alcohol but was not degraded. MBC had no effect on catabolism of the 2-fluoro analog, and 2-fluoro substitution inhibited entrance of the compound into β-oxidation. These results demonstrate that β-oxidation is the primary oxidative pathway by which pheromone is degraded on the antennae of European corn borer moths.
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9

Schaafsma, A. W., F. Meloche, and R. E. Pitblado. "Effect of Mowing Corn Stalks and Tillage on Overwintering Mortality of European Corn Borer (Lepidoptera: Pyralidae) in Field Corn." Journal of Economic Entomology 89, no. 6 (December 1, 1996): 1587–92. http://dx.doi.org/10.1093/jee/89.6.1587.

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10

Seymour, R. C., J. B. Campbell, and R. J. Wright. "Control of European Corn Borer Larvae and Effect on Spider Mites on Reproductive Stage Field Corn, 1995." Arthropod Management Tests 22, no. 1 (January 1, 1997): 228–29. http://dx.doi.org/10.1093/amt/22.1.228a.

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Dissertations / Theses on the topic "European corn borer – Physiological effect"

1

Trisyono, Y. Andi. "Effect of the ecdysone agonists, methoxyfenozide and tebufenozide, on European and Southwestern corn borers in vivo and in vitro /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9964006.

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Melia-Hancock, Susan. "Effect of European and southwestern corn borers on translocation of photosynthetic products, water use and yield in Zea mays L." 1985. http://hdl.handle.net/2097/27500.

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Beeghly, Hobart Harold. "The effect of cell wall constituents in determining resistance of maize to the European corn borer." 1990. http://catalog.hathitrust.org/api/volumes/oclc/23174695.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1990.
Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 78-85).
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Book chapters on the topic "European corn borer – Physiological effect"

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Steffey, Kevin L., Maria Venditti, Barbra Ria Barrido, and Allan S. Felsot. "Effect ofBacillus thuringiensisCorn on Natural Enemies of the European Corn Borer." In ACS Symposium Series, 139–50. Washington, DC: American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2004-0866.ch009.

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