Results 181 to 190 of about 11,854 (229)
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Insecticide and Acaricide Tests, 1990
Abstract Insecticides were applied to 7-yr-old trees in Douglas, MI on 11 Jul at a rate of 300 gal/acre with an FMC 1029 handgun sprayer. Treatments were arranged in a completely randomized design of single trees replicated 4 times. Difolitan, Captec, Bayleton, and Baycor were applied separately to all treatments.
James W. Johnson, David Biddinger
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Abstract Insecticides were applied to 7-yr-old trees in Douglas, MI on 11 Jul at a rate of 300 gal/acre with an FMC 1029 handgun sprayer. Treatments were arranged in a completely randomized design of single trees replicated 4 times. Difolitan, Captec, Bayleton, and Baycor were applied separately to all treatments.
James W. Johnson, David Biddinger
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The Canadian Entomologist, 1934
During the past few years it has been possible to collect leafhoppers in many parts of Utah. Because of the abundance of many of the species and the fact that so many feed upon range forage plants, it seems to the writer that the injury due to range leafhoppers in the Rocky Mountain West has been greatly underestimated.
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During the past few years it has been possible to collect leafhoppers in many parts of Utah. Because of the abundance of many of the species and the fact that so many feed upon range forage plants, it seems to the writer that the injury due to range leafhoppers in the Rocky Mountain West has been greatly underestimated.
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The Food Plants of the Leafhoppers
Annals of the Entomological Society of America, 1932The writer‗s major scientific interest for many years has been in the life histories and food plant relations of the higher Homoptera. The greater number of publications to date have been along systematic lines, not due to interest, but to necessity of naming species before it was possible to publish life history studies of a group.
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Annals of the Entomological Society of America, 1926
The members of the family Cicadellidae are commonly regarded as herbivorous since they are thought to depend entirely on plant juices for their food. It has been known for some time, however, that they will bite man. Riley and Johannsen, for example, mention Platymetopius acutus (Say) and Empoasca mali (LeB.) in this connection.
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The members of the family Cicadellidae are commonly regarded as herbivorous since they are thought to depend entirely on plant juices for their food. It has been known for some time, however, that they will bite man. Riley and Johannsen, for example, mention Platymetopius acutus (Say) and Empoasca mali (LeB.) in this connection.
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Transmission by Leafhoppers (Cicadellidae)
1998Leafhoppers, as vectors of a number of viruses, are responsible for great economic losses of major crops, such as rice. Therefore, this section deals with important leafhopper-transmitted viruses of rice: rice tungro complex, rice transitory yellowing Rhabdovirus and rice dwarf Phytoreovirus.
Jeanne Dijkstra, Cees P. de Jager
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THE MANITOBAN FAUNA OF LEAFHOPPERS (HOMOPTERA: CICADELLIDAE): II. THE FAUNA OF MACRO-LEAFHOPPERS
The Canadian Entomologist, 1972AbstractThe macro-leafhoppers (Cicadellidae, exclusive of Typhlocybinae) of Manitoba are recorded with distribution and host records for the province, seasonal occurrence of adults, ecological associations, and recent taxonomic changes. These comprise 240 species, including 95 new provincial records, of which 22 are new Canadian records, and 1 is a new
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Insecticide and Acaricide Tests, 1989
Abstract ‘PMR 45’ cantaloupes, planted 12 May at the Arkansas Valley Research Center, Rocky Ford, Colo., were used in the study. Plots were 2 beds (60-inch spacing), 24 ft long, arranged in a randomized complete block design with 4 replications.
Whitney S. Cranshaw, Frank Schweissing
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Abstract ‘PMR 45’ cantaloupes, planted 12 May at the Arkansas Valley Research Center, Rocky Ford, Colo., were used in the study. Plots were 2 beds (60-inch spacing), 24 ft long, arranged in a randomized complete block design with 4 replications.
Whitney S. Cranshaw, Frank Schweissing
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Sampling Leafhoppers on Soybean
1980Numerous species of leafhoppers (Homoptera: Cicadellidae) have been recorded in association with soybean in the United States. A survey conducted in Arkansas detected 37 species of leafhoppers (Tugwell et al. 1973). Forty-seven species have been recorded in Illinois based on specimens in the International Reference Collection of Soybean-Associated ...
Charles G. Helm +2 more
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Leafhopper Association on Apple
Journal of Economic Entomology, 1930A brief report of life history studies and field observations of the leafhoppers in Virginia apple orchards. Serious injury to fruit and foliage has resulted from the feeding of six species. The seasonal abundance of Empoasca fabae, E. maligna, Typhlocyba pomaria, Erythroneura hartii, E. oblique, and E.
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