Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Larry Grenkow"'
Publikováno v:
Canadian Journal of Plant Science. 100:575-591
This study investigated the relationships between numbers of Delia species (Delia spp. Rob.-Desv., Diptera: Anthomyiidae) flies or eggs and root injury levels of Brassica napus L. and Brassica rapa L. (Brassicaceae) canola (oilseed rape), and between
Autor:
Héctor A. Cárcamo, Shelley Barkley, John Gavloski, Larry Grenkow, Juliana J. Soroka, Scott Meers
Publikováno v:
The Canadian Entomologist. 152:110-129
This study examined the use of degree-day models to predict alfalfa weevil Hypera postica (Gyllenhal) (Coleoptera: Curculionidae) population development on the Canadian prairies. Air temperatures, alfalfa weevil abundance, and instar data were collec
Publikováno v:
The Canadian Entomologist. 151:219-235
A three-year field study in northeastern Saskatchewan, Canada, determined the effects of seeding date and seed treatment on feeding injury by Contarinia Róndani (Diptera: Cecidomyiidae) midges to canola, Brassica napus Linnaeus (Brassicaceae), and s
Publikováno v:
The Canadian Entomologist. 150:637-651
To determine resistance of Brassicaceae field crops to Contarinia Róndani (Diptera: Cecidomyiidae) midge complex (Contarinia nasturtii Kieffer and Contarinia undescribed species), field trials of two different host assemblages were undertaken near M
Publikováno v:
The Canadian Entomologist. 150:100-115
Flea beetle (Coleoptera: Chrysomelidae) species and numbers were determined from yellow sticky traps (n=11 180) set out in canola (Brassica Linnaeus, Brassicaceae) fields at 300 site years and 15 ecoregions across the Canadian Prairie provinces in ea
Autor:
Margaret Y. Gruber, Peta C. Bonham-Smith, J. Adamson, J.J. Soroka, Ushan I. Alahakoon, Larry Grenkow
Publikováno v:
The Canadian Entomologist. 148:603-615
Plant growth and insect resistance characteristics were determined for two Brassica napus Linnaeus (Brassicaceae) lines, AtGL3+ and K-5-8, developed for enhanced trichome densities relative to their parental cultivar Westar. In the field, both transg
Publikováno v:
Environmental Entomology. 43:1443-1452
The currently accepted lower threshold temperature for the development of diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae), the world's most destructive insect pest of cruciferous crops, is around 6.0°C, and there is no known upper t
Autor:
Juliana J. Soroka, Larry Grenkow
Publikováno v:
Journal of Economic Entomology. 106:2557-2567
Crucifer-feeding flea beetles, Phyllotreta spp., are chronic insect pests in Canadian prairie canola production. Multiple laboratory and field feeding bioassays were conducted to determine the susceptibility of a wide range of crucifer species, culti
Autor:
Juliana, Soroka, Larry, Grenkow
Publikováno v:
Journal of economic entomology. 106(6)
Crucifer-feeding flea beetles, Phyllotreta spp., are chronic insect pests in Canadian prairie canola production. Multiple laboratory and field feeding bioassays were conducted to determine the susceptibility of a wide range of crucifer species, culti
Autor:
Robert J. Lamb, Larry Grenkow
Publikováno v:
The Canadian Entomologist. 140:600-602
The specific impact of the aphid Macrosiphum euphorbiae (Thomas) on seedlings of common flax, Linum usitatissimum L., is 3.317 mg/mg, quantified as the dry mass of plant tissue required to produce a unit of herbivore tissue. This measure of the effic