Results 161 to 170 of about 703 (185)
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Journal of Economic Entomology
Abstract The rose-grain aphid, Metopolophium dirhodum (Walker), has been identified as a predominant aphid species in wheat agroecosystems. Flonicamid, a novel pyridinamide insect growth regulator, has demonstrated high efficacy against various sap-sucking pests.
Xinan Li +8 more
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Abstract The rose-grain aphid, Metopolophium dirhodum (Walker), has been identified as a predominant aphid species in wheat agroecosystems. Flonicamid, a novel pyridinamide insect growth regulator, has demonstrated high efficacy against various sap-sucking pests.
Xinan Li +8 more
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Environmental Entomology, 1991
A spore shower technique was used to test four species of aphid-derived entomophthoralean fungi, Pandora neoaphidis (Remaudiere & Hennebert) Humber, Zoophthora radicans (Brefeld) Batko, Conidiobolus thromboides Drechsler, and Conidiobolus coronatus (Constantin) Batko, against the cereal aphids, Diuraphis noxia (Mordvilko) and Metopolophium dirhodum ...
Ming-Guang Feng, James B. Johnson
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A spore shower technique was used to test four species of aphid-derived entomophthoralean fungi, Pandora neoaphidis (Remaudiere & Hennebert) Humber, Zoophthora radicans (Brefeld) Batko, Conidiobolus thromboides Drechsler, and Conidiobolus coronatus (Constantin) Batko, against the cereal aphids, Diuraphis noxia (Mordvilko) and Metopolophium dirhodum ...
Ming-Guang Feng, James B. Johnson
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Annals of Applied Biology, 1978
SUMMARYThe effects of feeding site of Sitobion avenae and Metopolophium dirhodum on grain weight, number and nitrogen content were investigated in the laboratory and in the field. When the latter species was confined to particular leaves in a growth room, grain weight reductions occurred only when the aphid fed on the flag leaf; reductions in ...
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SUMMARYThe effects of feeding site of Sitobion avenae and Metopolophium dirhodum on grain weight, number and nitrogen content were investigated in the laboratory and in the field. When the latter species was confined to particular leaves in a growth room, grain weight reductions occurred only when the aphid fed on the flag leaf; reductions in ...
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Metopolophium dirhodum (rose-grass aphid)
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Journal of Applied Entomology, 1987
AbstractBy using the number of antennal segments, the relative length of the individual segments, and supplemented by some morphological details, it should be possible to determine the different apterous instars of the rose‐grain aphid.ZusammenfassungBestimmungsschlüssel für aptere Stadien der Aphide, Metopolophium dirhodum (Wlk.)Mit Hilfe der Anzahl ...
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AbstractBy using the number of antennal segments, the relative length of the individual segments, and supplemented by some morphological details, it should be possible to determine the different apterous instars of the rose‐grain aphid.ZusammenfassungBestimmungsschlüssel für aptere Stadien der Aphide, Metopolophium dirhodum (Wlk.)Mit Hilfe der Anzahl ...
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Annals of Applied Biology, 1986
SUMMARYA preliminary morphometric analysis of alate Metopolophium dirhodum was carried out. The alate morphs studied were: gynoparae and alate emigrants (collected from Rosa), summer exules (collected from maize in the field and from wheat in the laboratory) and winter exules (collected from grasses).
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SUMMARYA preliminary morphometric analysis of alate Metopolophium dirhodum was carried out. The alate morphs studied were: gynoparae and alate emigrants (collected from Rosa), summer exules (collected from maize in the field and from wheat in the laboratory) and winter exules (collected from grasses).
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The Journal of Applied Ecology, 1986
(1) Summer populations of the rose-grain aphid, Metopolophium dirhodum (Walker), were monitored in Bedfordshire (1978-80). Population density, age structure and distribution were studied by detailed sampling, and immigration and population development in different years are compared.
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(1) Summer populations of the rose-grain aphid, Metopolophium dirhodum (Walker), were monitored in Bedfordshire (1978-80). Population density, age structure and distribution were studied by detailed sampling, and immigration and population development in different years are compared.
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