Zobrazeno 1 - 10
of 41
pro vyhledávání: '"James L. Krysan"'
Publikováno v:
Journal of Economic Entomology. 88:1420-1424
Pear psylla, Cacopsylla pyricola Foerster, adults that had contacted substrates treated with the insect growth regulators fenoxycarb or pyriproxyfen were allowed to oviposit on untreated plants. Eggs from treated insects had a reduction in hatch for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc9495f7ea8ba0f8398fe34c54424393
https://doi.org/10.1093/jee/88.5.1420
https://doi.org/10.1093/jee/88.5.1420
Autor:
James L. Krysan, Thomas R. Unruh
Publikováno v:
Journal of Economic Entomology. 87:858-865
Winterform pear psylla, Cacopsylla pyticola Foerster, in reproductive diapause and collected in the fall were conditioned in the laboratory to either tenninate (long days) or maintain (short days) diapause; conditioning was further divided into insec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb7cf161a5e15f3d26b73a1520aed3fb
https://doi.org/10.1093/jee/87.4.858
https://doi.org/10.1093/jee/87.4.858
Publikováno v:
Annals of the Entomological Society of America. 87:241-249
Large numbers of winterform pear psylla, Cacopsylla pyricola Foerster, leave the pear orchard in the fall, overwinter in diapause in nonpear habitats, and return to pear orchards the following spring. Postdiapause development of overwintering forms,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a501603e4f0f6cceed6c90eea1785cbc
https://doi.org/10.1093/aesa/87.2.241
https://doi.org/10.1093/aesa/87.2.241
Autor:
David R. Horton, Brian A. Croft, Thomas R. Unruh, Leonard B. Coop, Everett C. Burts, James L. Krysan
Publikováno v:
The Canadian Entomologist. 126:111-120
Phenology of fall dispersal into apple orchards is described for winterform pear psylla, Cacopsylla pyricola Foerster, in orchards located in Yakima and Wenatchee, Washington. Psylla in both regions first appeared on pear in mid to late September, re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0da41369719c5c8f4e99dea76a715a1
https://doi.org/10.4039/ent126111-1
https://doi.org/10.4039/ent126111-1
Autor:
James L. Krysan, Everett C. Burts, Thomas R. Unruh, Brian A. Croft, David R. Horton, Leonard B. Coop
Publikováno v:
Annals of the Entomological Society of America. 86:599-608
Early-fall densities of winterform pear psylla, Cacopsylla pyricola Foerster, were higher on ‘D’ Anjou' than on ‘Bartlett’ pear and were higher in the upper tree canopy than in the lower canopy. These varietal and height effects were not cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::252090ed8e83b35e653cb207610ec157
https://doi.org/10.1093/aesa/86.5.599
https://doi.org/10.1093/aesa/86.5.599
Autor:
C. R. Sell, J. F. Howell, James L. Krysan, Alan L. Knight, Philipp Kirsch, Thomas R. Unruh, D. F. Brown
Publikováno v:
Journal of Economic Entomology. 85:918-925
During 1987-1988 replicated 0.3-ha plots of apple and pear were used to measure the efficacy of sex pheromone-mediated mating disruption of codling moth, Cydia pomonella (L.). Comparisons of fruit injury were made between pheromone-treated and untrea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::802ff2dcdb2513e13866c15ebdf0e7f8
https://doi.org/10.1093/jee/85.3.918
https://doi.org/10.1093/jee/85.3.918
Publikováno v:
Journal of Economic Entomology. 85:910-917
Evaporative release characteristics of a polyethylene dispenser containing a mixture of (E, E)-8,10-dodecadien-l-ol (E8, E10-12:OH), dodecan-l-ol (12:OH), and tetradecan- l-ol for disruption of mating of the codling moth, Cydia pomonella (L.), were e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ecdde8d097f51acbe71f486b2625f5f
https://doi.org/10.1093/jee/85.3.910
https://doi.org/10.1093/jee/85.3.910
Autor:
James L. Krysan, David R. Horton
Publikováno v:
Environmental Entomology. 20:626-634
Sampling of summer form and winter form pear psylla, Cacopsylla pyricola (Foerster), was undertaken during four years and in two orchards using three methods: yellow sticky traps, clear sticky traps, and beating tray (limb jar techniques). Catches on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::337bf24b892f5f409ba0a1d5c0c8c555
https://doi.org/10.1093/ee/20.2.626
https://doi.org/10.1093/ee/20.2.626
Publikováno v:
Annals of the Entomological Society of America. 83:1192-1202
Electrophoretic assays were conducted to examine the influence of selected biological variables on zymogram patterns observed in adult populations of Diabrotica spp. Age- and sex-related differences in enzyme activity were variously recorded at loci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78ff7c979052816eec8468b67f9f335d
https://doi.org/10.1093/aesa/83.6.1192
https://doi.org/10.1093/aesa/83.6.1192
Autor:
David R. Horton, James L. Krysan
Publikováno v:
Environmental Entomology. 19:1463-1468
Effects of host and nonhost substrates on probing and preoviposition activity were monitored for adult summerform pear psylla, Cacopsylla pyricola Foerster. Tendency to initiate probing activity during a 15-min observation period was similar on a sus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29ea9724cbc73c1f9ff81255fbd51ff0
https://doi.org/10.1093/ee/19.5.1463
https://doi.org/10.1093/ee/19.5.1463