Results 201 to 210 of about 2,821 (237)
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Archives of Phytopathology and Plant Protection, 1999
Experiments were carried out in wheat fields of Economic Entomology Department, Faculty of Agriculture, Mansoura‐University, during two successive seasons 1997 and 1998. The cereal aphids, Schizaphis graminum (Rond.), Sitobion avenae (Fabr.), Rhopalosiphum padi (L.) and Rhopalosiphum maidis (Fitch.) are the serious pests of the wheat crop at Mansoura ...
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Experiments were carried out in wheat fields of Economic Entomology Department, Faculty of Agriculture, Mansoura‐University, during two successive seasons 1997 and 1998. The cereal aphids, Schizaphis graminum (Rond.), Sitobion avenae (Fabr.), Rhopalosiphum padi (L.) and Rhopalosiphum maidis (Fitch.) are the serious pests of the wheat crop at Mansoura ...
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Simulation modelling of the population dynamics of cereal aphids
Biosystems, 1985 A simulation model explaining the population dynamics of the grain aphid (Sitobion avenae), a serious pest of wheat in Western Europe, is described. The model includes the effects of crop development and some natural enemies on the biology of the aphid.
Carter, N.
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Annals of Applied Biology, 1990 The aphid-pathogenic fungus Erynia neoaphidis, as dried fungus-infected aphids, was applied to caged plots of winter wheat infested with cereal aphids at two sites, one in Hertfordshire and the other in Hampshire, in 1983.
N Wilding, S D Wratten
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2023
Insect and disease pests are prevalent in both residential and commercial food production settings, meaning that a large number of Idahoans contend with them each year. Part of an integrated pest management (IPM) series, this colorfully illustrated bulletin helps homeowners and growers alike to identify aphids in cereals and to learn the IPM options ...
DeGrey, Samuel, Wickwar, Desire
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Insect and disease pests are prevalent in both residential and commercial food production settings, meaning that a large number of Idahoans contend with them each year. Part of an integrated pest management (IPM) series, this colorfully illustrated bulletin helps homeowners and growers alike to identify aphids in cereals and to learn the IPM options ...
DeGrey, Samuel, Wickwar, Desire
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Spring migration of cereal aphids
Zeitschrift für Angewandte Entomologie, 1984AbstractIn those years when successful overwintering does not occur on cereal crops, the timing of colonization and the number of alatae of the cereal aphids Sitobion avenae and Metopolophium dirhodum entering cereal crops, before the end of flowering (DS 69), are related to the likelihood of an outbreak occurring.The earlier egg hatch of Rhopalosiphum
S. R. LEATHER, K. F. A. WALTERS
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Journal of Chemical Ecology, 1994
The activity and molecular weights of glutathioneS-transferase were studied in three species of cereal aphid:Metopolophium dirhodum, Sitobion avenae, andRhopalosiphum padi. The highest level of glutathioneS-transferase activity was recorded in extracts fromM. dirhodum and the lowest fromS. avenae, and extracts of larvae were more active than those from
B, Leszczynski, M, Matok, A F, Dixon
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The activity and molecular weights of glutathioneS-transferase were studied in three species of cereal aphid:Metopolophium dirhodum, Sitobion avenae, andRhopalosiphum padi. The highest level of glutathioneS-transferase activity was recorded in extracts fromM. dirhodum and the lowest fromS. avenae, and extracts of larvae were more active than those from
B, Leszczynski, M, Matok, A F, Dixon
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Insecticide and Acaricide Tests, 1989
Abstract Barley was planted 29 Apr near Kimberly, Idaho. The soil type was Portneuf silt loam and the field was surface irrigated. Two rates of Asana were applied with a CO2-pressurized backpack sprayer in 50 gal finished spray/acre. The Asana plots and an untreated control plot were replicated 4 times in a randomized complete block ...
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Abstract Barley was planted 29 Apr near Kimberly, Idaho. The soil type was Portneuf silt loam and the field was surface irrigated. Two rates of Asana were applied with a CO2-pressurized backpack sprayer in 50 gal finished spray/acre. The Asana plots and an untreated control plot were replicated 4 times in a randomized complete block ...
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Detection of resistance to aphids in cereals
Annals of Applied Biology, 1978SUMMARYResistance to Sitobion avenae and Metopolophium dirhodum was assessed by caging aphids on the upper part of mature tillers. Despite variation in the results, considered to be due mainly to differences amongst plants of different ages, certain cultivars consistently supported fewer aphids.
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