Marjorie A. Hoy, Department of Entomology, University of California, Berkeley
Frances E. Cave, Department of Entomology, University of California, Berkeley
Robert H. Beede, Kings, San Joaquin, Glenn, Butte, and Merced counties
Joseph A. Grant, Kings, San Joaquin, Glenn, Butte, and Merced counties
William H. Krueger, Kings, San Joaquin, Glenn, Butte, and Merced counties
William H. Olson, Kings, San Joaquin, Glenn, Butte, and Merced counties
Kevin M. Spollen, Department of Entomology, University of California, Berkeley
William W. Barnett, Kearney Agricultural Center, Parlier
Lonnie C. Hendricks, Kings, San Joaquin, Glenn, Butte, and Merced counties
Marjorie A. Hoy is Professor, Department of Entomology, University of California, Berkeley; Frances E. Cave is Staff Research Associate II, Department of Entomology, University of California, Berkeley; Robert H. Beede is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; Joseph Grant is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; William H. Krueger is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; William H. Olson is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; Kevin M. Spollen is Graduate Student, Department of Entomology, University of California, Berkeley; William W. Barnett is Area IPM Advisor, Kearney Agricultural Center, Parlier. Lonnie C. Hendricks is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively;
Abstract
A genetically improved strain of the parasite Trioxys pallidus performed well after release in commercial orchards in 1988, persisting through the
season in four of the five release sites and, at two sites, dispersing to nearby wainut
blocks. Work on the resistant strain also continued in the laboratory, as reported
in the next article.
This research was supported in part by funds from the Walnut Board of California,
Regional Research Project W-84, and the California Agricultural Experiment Station.
The authors thank E. Brown for assistance with the project and walnut growers M. Podesta,
W. Torrison, L. Bairstow, F. Perry, and L. Steele for providing experimental walnut
blocks.
Hoy M, Cave F, Beede R, Grant J, Krueger W, Olson W, Spollen K, Barnett W, Hendricks L. 1989. Guthion-resistant walnut aphid parasite: Release, dispersal, and recovery in orchards.
Calif Agr 43(5):21-23.
Guthion-resistant walnut aphid parasite: Release, dispersal, and recovery in orchards
Marjorie A. Hoy, Frances Cave, Robert H. Beede, Joseph A. Grant, William H. Krueger, William H. Olson, Kevin M. Spollen, William W. Barnett, Lonnie C. Hendricks
Webmaster Email: bjnoel@ucanr.edu
Guthion-resistant walnut aphid parasite: Release, dispersal, and recovery in orchards
Marjorie A. Hoy, Department of Entomology, University of California, Berkeley
Frances E. Cave, Department of Entomology, University of California, Berkeley
Robert H. Beede, Kings, San Joaquin, Glenn, Butte, and Merced counties
Joseph A. Grant, Kings, San Joaquin, Glenn, Butte, and Merced counties
William H. Krueger, Kings, San Joaquin, Glenn, Butte, and Merced counties
William H. Olson, Kings, San Joaquin, Glenn, Butte, and Merced counties
Kevin M. Spollen, Department of Entomology, University of California, Berkeley
William W. Barnett, Kearney Agricultural Center, Parlier
Lonnie C. Hendricks, Kings, San Joaquin, Glenn, Butte, and Merced counties
Marjorie A. Hoy is Professor, Department of Entomology, University of California, Berkeley; Frances E. Cave is Staff Research Associate II, Department of Entomology, University of California, Berkeley; Robert H. Beede is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; Joseph Grant is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; William H. Krueger is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; William H. Olson is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively; Kevin M. Spollen is Graduate Student, Department of Entomology, University of California, Berkeley; William W. Barnett is Area IPM Advisor, Kearney Agricultural Center, Parlier. Lonnie C. Hendricks is Farm Advisor in Kings, San Joaquin, Glenn, Butte, and Merced counties, respectively;
Abstract
A genetically improved strain of the parasite Trioxys pallidus performed well after release in commercial orchards in 1988, persisting through the
season in four of the five release sites and, at two sites, dispersing to nearby wainut
blocks. Work on the resistant strain also continued in the laboratory, as reported
in the next article.
This research was supported in part by funds from the Walnut Board of California,
Regional Research Project W-84, and the California Agricultural Experiment Station.
The authors thank E. Brown for assistance with the project and walnut growers M. Podesta,
W. Torrison, L. Bairstow, F. Perry, and L. Steele for providing experimental walnut
blocks.
Hoy M, Cave F, Beede R, Grant J, Krueger W, Olson W, Spollen K, Barnett W, Hendricks L. 1989. Guthion-resistant walnut aphid parasite: Release, dispersal, and recovery in orchards.
Calif Agr 43(5):21-23.
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