The Experts below are selected from a list of 219 Experts worldwide ranked by ideXlab platform
R R Youngman - One of the best experts on this subject based on the ideXlab platform.
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efficacy of inoculative releases of trichogramma ostriniae hymenoptera trichogrammatidae against European Corn Borer ostrinia nubilalis lepidoptera crambidae in field Corn
Biological Control, 2006Co-Authors: Michael P. Hoffmann, Thomas P. Kuhar, Sylvie A Pitcher, Sandra A Cheever, Jeffrey Gardner, John E Losey, C A Laub, R R YoungmanAbstract:We evaluated the egg parasitoid Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) to control European Corn Borer [Lepidoptera: Crambidae: Ostrinia nubilalis (Hubner)] in Weld Corn in 2001 and 2002. Inoculative releases of 75,000 T. ostriniae/ha occurred in New York and Virginia in 5–10 CornWelds per state when Corn was at mid-whorl. Incidence of egg mass parasitism, number of stalk tunnels, incidence of ear damage, and whole-plant yield were evaluated. Parasitism of European Corn Borer egg masses ranged from 0 to 75% in release plots and was greater in release plots than in control plots. Individual comparisons between paired release and control plots showed no reductions in either stalk or ear damage. However, when data were combined across both years and Welds, stalk and ear damage were signiWcantly reduced in New York. In Virginia, no signiWcant diVerences were detected using data obtained from one year. There were no diVerences in yield between release and control plots. Low densities of European Corn Borer, drought conditions in 1 year, and a larger plant canopy in Weld Corn are possible reasons why T. ostriniae releases provided less control than has been observed in previous trials in sweet Corn. Additional research focused on improved timing and frequency and number of releases is warranted.
Michael P. Hoffmann - One of the best experts on this subject based on the ideXlab platform.
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efficacy of inoculative releases of trichogramma ostriniae hymenoptera trichogrammatidae against European Corn Borer ostrinia nubilalis lepidoptera crambidae in field Corn
Biological Control, 2006Co-Authors: Michael P. Hoffmann, Thomas P. Kuhar, Sylvie A Pitcher, Sandra A Cheever, Jeffrey Gardner, John E Losey, C A Laub, R R YoungmanAbstract:We evaluated the egg parasitoid Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) to control European Corn Borer [Lepidoptera: Crambidae: Ostrinia nubilalis (Hubner)] in Weld Corn in 2001 and 2002. Inoculative releases of 75,000 T. ostriniae/ha occurred in New York and Virginia in 5–10 CornWelds per state when Corn was at mid-whorl. Incidence of egg mass parasitism, number of stalk tunnels, incidence of ear damage, and whole-plant yield were evaluated. Parasitism of European Corn Borer egg masses ranged from 0 to 75% in release plots and was greater in release plots than in control plots. Individual comparisons between paired release and control plots showed no reductions in either stalk or ear damage. However, when data were combined across both years and Welds, stalk and ear damage were signiWcantly reduced in New York. In Virginia, no signiWcant diVerences were detected using data obtained from one year. There were no diVerences in yield between release and control plots. Low densities of European Corn Borer, drought conditions in 1 year, and a larger plant canopy in Weld Corn are possible reasons why T. ostriniae releases provided less control than has been observed in previous trials in sweet Corn. Additional research focused on improved timing and frequency and number of releases is warranted.
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Controlling European Corn Borer in vegetables with a parasitic wasp
Pesticide Outlook, 2003Co-Authors: Thomas P. Kuhar, Michael P. Hoffmann, Mark G. WrightAbstract:Thomas P. Kuhar (Department of Entomology, Virginia Tech), Michael P. Hoffmann (Department of Entomology, Cornell University), and Mark G. Wright (Department of Plant and Environmental Protection Sciences, University of Hawaii) summarize current reasearch with Trichogramma ostriniae for control of European Corn Borer in vegetable crops.
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life table studies of European Corn Borer lepidoptera crambidae with and without inoculative releases of trichogramma ostriniae hymenoptera trichogrammatidae
Environmental Entomology, 2002Co-Authors: Thomas P. Kuhar, Michael P. Hoffmann, Mark G. Wright, Sylvie A ChenusAbstract:Abstract Life table studies of European Corn Borer, Ostrinia nubilalis (Hubner), populations with and without inoculative releases of Trichogramma ostriniae (Peng & Chen) were conducted in sweet Corn and field Corn. Inoculative releases of T. ostriniae (at 72,000 females per hectare) provided relatively high parasitism of European Corn Borer eggs (≈37%) throughout the season. The increase in egg parasitism was not offset by compensatory changes in other mortality rates such as egg predation, eggs not hatching, and death of early instars after egg hatch. Early instar disappearance was a key mortality factor accounting for >70% of total mortality from egg deposition to established larvae. Egg parasitism by T. ostriniae was also a key mortality factor. Releases of T. ostriniae increased total egg and larval mortality of O. nubilalis from 61 to 92% in sweet Corn and from 80 to 93% in field Corn.
Thomas P. Kuhar - One of the best experts on this subject based on the ideXlab platform.
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Decline of European Corn Borer as a pest of potatoes.
Plant Health Progress, 2020Co-Authors: Thomas P. Kuhar, Gerald M. Ghidiu, Hélène DoughtyAbstract:European Corn Borer (ECB), Ostrinia nubilalis (Hübner), is regarded as a significant pest in North America. Larvae bore into stems, stalks, or the fruit of a wide range of agricultural crops. Published 29 January 2010.
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efficacy of inoculative releases of trichogramma ostriniae hymenoptera trichogrammatidae against European Corn Borer ostrinia nubilalis lepidoptera crambidae in field Corn
Biological Control, 2006Co-Authors: Michael P. Hoffmann, Thomas P. Kuhar, Sylvie A Pitcher, Sandra A Cheever, Jeffrey Gardner, John E Losey, C A Laub, R R YoungmanAbstract:We evaluated the egg parasitoid Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) to control European Corn Borer [Lepidoptera: Crambidae: Ostrinia nubilalis (Hubner)] in Weld Corn in 2001 and 2002. Inoculative releases of 75,000 T. ostriniae/ha occurred in New York and Virginia in 5–10 CornWelds per state when Corn was at mid-whorl. Incidence of egg mass parasitism, number of stalk tunnels, incidence of ear damage, and whole-plant yield were evaluated. Parasitism of European Corn Borer egg masses ranged from 0 to 75% in release plots and was greater in release plots than in control plots. Individual comparisons between paired release and control plots showed no reductions in either stalk or ear damage. However, when data were combined across both years and Welds, stalk and ear damage were signiWcantly reduced in New York. In Virginia, no signiWcant diVerences were detected using data obtained from one year. There were no diVerences in yield between release and control plots. Low densities of European Corn Borer, drought conditions in 1 year, and a larger plant canopy in Weld Corn are possible reasons why T. ostriniae releases provided less control than has been observed in previous trials in sweet Corn. Additional research focused on improved timing and frequency and number of releases is warranted.
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Controlling European Corn Borer in vegetables with a parasitic wasp
Pesticide Outlook, 2003Co-Authors: Thomas P. Kuhar, Michael P. Hoffmann, Mark G. WrightAbstract:Thomas P. Kuhar (Department of Entomology, Virginia Tech), Michael P. Hoffmann (Department of Entomology, Cornell University), and Mark G. Wright (Department of Plant and Environmental Protection Sciences, University of Hawaii) summarize current reasearch with Trichogramma ostriniae for control of European Corn Borer in vegetable crops.
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life table studies of European Corn Borer lepidoptera crambidae with and without inoculative releases of trichogramma ostriniae hymenoptera trichogrammatidae
Environmental Entomology, 2002Co-Authors: Thomas P. Kuhar, Michael P. Hoffmann, Mark G. Wright, Sylvie A ChenusAbstract:Abstract Life table studies of European Corn Borer, Ostrinia nubilalis (Hubner), populations with and without inoculative releases of Trichogramma ostriniae (Peng & Chen) were conducted in sweet Corn and field Corn. Inoculative releases of T. ostriniae (at 72,000 females per hectare) provided relatively high parasitism of European Corn Borer eggs (≈37%) throughout the season. The increase in egg parasitism was not offset by compensatory changes in other mortality rates such as egg predation, eggs not hatching, and death of early instars after egg hatch. Early instar disappearance was a key mortality factor accounting for >70% of total mortality from egg deposition to established larvae. Egg parasitism by T. ostriniae was also a key mortality factor. Releases of T. ostriniae increased total egg and larval mortality of O. nubilalis from 61 to 92% in sweet Corn and from 80 to 93% in field Corn.
John E Losey - One of the best experts on this subject based on the ideXlab platform.
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efficacy of inoculative releases of trichogramma ostriniae hymenoptera trichogrammatidae against European Corn Borer ostrinia nubilalis lepidoptera crambidae in field Corn
Biological Control, 2006Co-Authors: Michael P. Hoffmann, Thomas P. Kuhar, Sylvie A Pitcher, Sandra A Cheever, Jeffrey Gardner, John E Losey, C A Laub, R R YoungmanAbstract:We evaluated the egg parasitoid Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) to control European Corn Borer [Lepidoptera: Crambidae: Ostrinia nubilalis (Hubner)] in Weld Corn in 2001 and 2002. Inoculative releases of 75,000 T. ostriniae/ha occurred in New York and Virginia in 5–10 CornWelds per state when Corn was at mid-whorl. Incidence of egg mass parasitism, number of stalk tunnels, incidence of ear damage, and whole-plant yield were evaluated. Parasitism of European Corn Borer egg masses ranged from 0 to 75% in release plots and was greater in release plots than in control plots. Individual comparisons between paired release and control plots showed no reductions in either stalk or ear damage. However, when data were combined across both years and Welds, stalk and ear damage were signiWcantly reduced in New York. In Virginia, no signiWcant diVerences were detected using data obtained from one year. There were no diVerences in yield between release and control plots. Low densities of European Corn Borer, drought conditions in 1 year, and a larger plant canopy in Weld Corn are possible reasons why T. ostriniae releases provided less control than has been observed in previous trials in sweet Corn. Additional research focused on improved timing and frequency and number of releases is warranted.
Sylvie A Pitcher - One of the best experts on this subject based on the ideXlab platform.
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efficacy of inoculative releases of trichogramma ostriniae hymenoptera trichogrammatidae against European Corn Borer ostrinia nubilalis lepidoptera crambidae in field Corn
Biological Control, 2006Co-Authors: Michael P. Hoffmann, Thomas P. Kuhar, Sylvie A Pitcher, Sandra A Cheever, Jeffrey Gardner, John E Losey, C A Laub, R R YoungmanAbstract:We evaluated the egg parasitoid Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) to control European Corn Borer [Lepidoptera: Crambidae: Ostrinia nubilalis (Hubner)] in Weld Corn in 2001 and 2002. Inoculative releases of 75,000 T. ostriniae/ha occurred in New York and Virginia in 5–10 CornWelds per state when Corn was at mid-whorl. Incidence of egg mass parasitism, number of stalk tunnels, incidence of ear damage, and whole-plant yield were evaluated. Parasitism of European Corn Borer egg masses ranged from 0 to 75% in release plots and was greater in release plots than in control plots. Individual comparisons between paired release and control plots showed no reductions in either stalk or ear damage. However, when data were combined across both years and Welds, stalk and ear damage were signiWcantly reduced in New York. In Virginia, no signiWcant diVerences were detected using data obtained from one year. There were no diVerences in yield between release and control plots. Low densities of European Corn Borer, drought conditions in 1 year, and a larger plant canopy in Weld Corn are possible reasons why T. ostriniae releases provided less control than has been observed in previous trials in sweet Corn. Additional research focused on improved timing and frequency and number of releases is warranted.
