Zobrazeno 1 - 10
of 16
pro vyhledávání: '"R. W. ZWICK"'
Autor:
P. H. Westigard, R. W. Zwick
Publikováno v:
The Canadian Entomologist. 110:225-236
Application of petroleum oils prior to oviposition by overwintering pear psylla, Psylla pyricola Foerster, reduced oviposition by 98% for up to 5 weeks. The delay of oviposition and reduction in subsequent egg and nymph densities were inversely propo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3efe4f411805e5ce444dc8c2c478f0d9
https://doi.org/10.4039/ent110225-3
https://doi.org/10.4039/ent110225-3
Autor:
G. J. Fields, R. W. Zwick
Publikováno v:
Journal of Economic Entomology. 71:793-796
The synthetic pyrethroid fenvalerate was laboratory and field tested against several insect and mite pests of pome fruit crops in Oregon. This chemical gave superior pre-, and postbloom control of pear psylla, Psylla pyricola Foerster, adults and nym
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7dcda87ce3fb53e5d1473d1723f5c634
https://doi.org/10.1093/jee/71.5.793
https://doi.org/10.1093/jee/71.5.793
Autor:
R. W. Zwick
Publikováno v:
Environmental Entomology. 1:169-176
A predaceous mite, Typhlodromus occidentalis Nesbitt (Acarina: Phytoseiidae), was incapable of maintaining population densities of the twospotted spider mite, Tetranychus urticae Koch, and McDaniel spider mite, T. mcdanieli McGregor, beneath levels t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40ec0f4682ae349ff365aaac54d9a9fc
https://doi.org/10.1093/ee/1.2.169
https://doi.org/10.1093/ee/1.2.169
Publikováno v:
Journal of Economic Entomology. 63:1573-1576
Ten insecticides and 2 soil fumigants were screened in the field and laboratory as possible controls for Pleocoma spp. grubs which attack the roots of deciduous fruit trees. Heptachlor and Dursban® ( O,O -dielhyl O -(3,5,6-trichloro-2-pridyl) phosph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca6f835450ae47bce9724ac1dcf16fc0
https://doi.org/10.1093/jee/63.5.1573
https://doi.org/10.1093/jee/63.5.1573
Publikováno v:
Environmental Entomology. 2:569-572
Populations of wasps, Vespula spp., on a 22-acre peach orchard near The Dalles, Oregon, were successfully depressed during the summers of 1969 and 1971 with traps containing the highly potent specific lures, 2,4-hexadlenyl butyrate or heptyl butyrate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a841c3fc801367234c7c329eabb52e15
https://doi.org/10.1093/ee/2.4.569
https://doi.org/10.1093/ee/2.4.569
Autor:
R. W. Zwick, F. W. Peifer
Publikováno v:
Journal of Economic Entomology. 61:1075-1079
Oils of various specifications, used alone and in combination with insecticides, were evaluated over a 3-year period as foliage sprays for control of psylla pyricola Foerster. In 1 series of experiments a 140 S. S. U. oil gave better psylla nymph con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a94c632f99cf6e29b33f918aa45018ed
https://doi.org/10.1093/jee/61.4.1075
https://doi.org/10.1093/jee/61.4.1075
Publikováno v:
Journal of Economic Entomology. 57:272-275
When diazinon sprays and dusts were applied to wheat at 1, 2.5, and 5 ppm and stored for 168 days in open jars at ambient room temperature, the toxicity of the treated grain to insects was markedly reduced after 7 days. Granary weevil adults, Sitophi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2edcfddd5f2bf3425f5f5bd90129e8f
https://doi.org/10.1093/jee/57.2.272
https://doi.org/10.1093/jee/57.2.272
Publikováno v:
Journal of Economic Entomology. 68:383-385
Dimethoate (2.67 lb AI/gal EC) was evaluated on heavily-infested backyard sweet cherry trees and in lightly infested commercial cherry orchards for control of Rhagoletis indifferens Curran. A single dilute application rates of 0.33 and 0.51 lb AI/100
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c1965a733b1d4b10759433d49cfd89d
https://doi.org/10.1093/jee/68.3.383
https://doi.org/10.1093/jee/68.3.383
Publikováno v:
Journal of the American Society for Horticultural Science. 101:123-125
Population levels of spider mites, principally European red mite, Panonychus ulmi (Koch), were regulated on ‘Newtown’ and ‘Golden Delicious’ apple trees for 4 years. Seasonal fruit sizing and firmness, terminal shoot growth, leaf chlorophyll
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::356ab1db86c532c1c5e2526aa031cb55
https://doi.org/10.21273/jashs.101.2.123
https://doi.org/10.21273/jashs.101.2.123
Publikováno v:
Journal of Economic Entomology. 63:1693-1695
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::788c41d5b7e2045d0e5b945ac5dfe532
https://doi.org/10.1093/jee/63.5.1693
https://doi.org/10.1093/jee/63.5.1693