Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Jeff G. Stewart"'
Publikováno v:
The Canadian Entomologist. 131:423-431
Potato plants (Solanum tuberosum, cv. Russet Burbank) genetically altered to produce the CryIIIA protein from Bacillus thuringiensis var tenebrionis were tested for susceptibility to attack by the potato flea beetle, Epitrix cucumeris (Harris), on Pr
Publikováno v:
The Canadian Entomologist. 130:509-514
The susceptibility of Colorado potato beetle [Leptinotarsa decemlineata (Say), Coleoptera: Chrysomelidae] to entomopathogenic nematodes (Steinernema carpocapsae, ’All’ strain, Nematoda: Heterorhabditae) was tested in the laboratory and the field
Autor:
Jeff G. Stewart, D. C. Eidt
Publikováno v:
The Canadian Entomologist. 129:205-210
Red and white clovers, Trifolium spp., were grown in nitrogen-poor soil containing cadavers of larval Galleria mellonella (L.) that were infected with Steinernema carpocapsae (Weiser) and its symbiont Xenorhabdus nematophilus Poinar and Thomas. Growt
Publikováno v:
The Canadian Entomologist. 129:21-26
A survey of 65 populations of Colorado potato beetle, Leptinotarsa decemlineata (Say), from locations across Prince Edward Island in 1993 indicated that insecticide resistance was widespread, but was most prevalent in the western and central potato-p
Autor:
Andrew P. Dornan, Jeff G. Stewart
Publikováno v:
The Canadian Entomologist. 127:255-262
The population dynamics of the European corn borer, Ostrinia nubilalis (Hübner) (Lepidoptera: Pyralidae), were documented on potatoes grown in Prince Edward Island (P.E.I.) from 1990 to 1992. By comparing degree-day accumulations above 10°C, both f
Evaluation of a Binomial Model for Insecticide Application to Control Lepidopterous Pests in Cabbage
Publikováno v:
Journal of Economic Entomology. 88:302-306
A binomial model for insecticide application was developed from counts of cabbage looper equivalents on cabbage grown on Prince Edward island, Canada, from 1988 to 1991. A threshold of 40% of plants infested with at least one larva of any of three sp
Publikováno v:
The Canadian Entomologist. 126:961-969
An investigation into the use of thresholds based on Cabbage Looper Equivalents (CLE) was conducted on Brussels sprouts, Brassica oleracea var. gemmifera (L.), cv. Valiant, grown in Prince Edward Island in 1991 and 1992. The CLE model was used to equ
Publikováno v:
The Canadian Entomologist. 126:379-387
Action thresholds for imported cabbageworm, Pieris rapae (L.), diamondback moth, Plutella xylostella (L.), and cabbage looper, Trichoplusia ni (Hübner), were evaluated on two cultivars of cabbage, Brassica oleracea var. capitata (L.), in Prince Edwa
Publikováno v:
Journal of Economic Entomology. 83:1499-1505
Cauliflower cultivars ‘Snowball Y’ and ‘Polar Express’ were defoliated every week by 0, 8, 18, 36, and 58% during the interval of growth from transplantation to head initiation (Period 1); from head initiation to harvest (Period 2); or from t
Autor:
Leith S. Thompson, Jeff G. Stewart
Publikováno v:
The Canadian Entomologist. 121:1097-1101
The spatial distribution of spring and summer populations of the potato flea beetle, Epitrix cucumeris (Harris) (Coleoptera: Chrysomelidae), on potatoes (“Superior” variety) was studied in 1987 and 1988. Slopes of the regression of mean crowding