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Full-Text Articles in Entomology
Tb51: Seasonal History Of The Buckthorn Aphid And Suitability Of Alder-Leaved Buckthorn As A Primary Host In Northeastern Maine, W. A. Shands, Geddes W. Simpson
Tb51: Seasonal History Of The Buckthorn Aphid And Suitability Of Alder-Leaved Buckthorn As A Primary Host In Northeastern Maine, W. A. Shands, Geddes W. Simpson
Technical Bulletins
The buckthorn aphid, Aphis nasturtii Kaltenbach, is one of four species of aphids commonly infesting potatoes, Solarium tuberosum L., in Maine. It is widely distributed over the northeastern part of the United States and is a pest of potatoes elsewhere in the world, including parts of England and Europe. The other three species of potato-infesting aphids in Maine are the green peach aphid, Myzus persicae (Sulzer), the potato aphid, Macrosiphum euphorbiae (Thomas ) and the foxglove aphid, Acyrthosiphon solani (Kaltenbach).
Tb59: Soil Characteristics Of Nesting Sites Of Solitary Bees Associated With The Low-Bush Blueberry In Maine, E. A. Osgood
Tb59: Soil Characteristics Of Nesting Sites Of Solitary Bees Associated With The Low-Bush Blueberry In Maine, E. A. Osgood
Technical Bulletins
During the course of ecological studies of certain native bees which pollinate the low-bush blueberry in Maine, it was noted that several species chose particular areas in which to construct their nests. It is the object of this bulletin to describe the characteristics of these chosen sites and to compare them to areas that are not conducive to nesting. This study was carried out in Deblois, Washington County, on areas known as "blueberry-barrens." The predominant soil in the area is Colton gravelly sandy loam.
Tb58: Further Evaluation Of Entomogenous Fungi As A Biological Agent Of Aphid Control In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall, Corinne C. Gordon
Tb58: Further Evaluation Of Entomogenous Fungi As A Biological Agent Of Aphid Control In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall, Corinne C. Gordon
Technical Bulletins
An intensive survey and study were made each year from 1952 through 1962 to determine seasonal abundance of living and dead diseased aphids by species on potatoes and to collect many of the infected specimens for exact diagnosis. Results of the study disclosed that the action of entomogenous fungi was outstanding in reducing the size of aphid populations on potatoes. This technical bulletin reports on the results of the continuance of the study from 1963 through 1969. However, the collection of dead, diseased aphids throughout the summer was done only from 1963 through 1966 ; thereafter, diagnosis was limited to …
Tb60: Survey Of Internal Parasites Of Potato-Infesting Aphids In Northeastern Maine, 1963 Through 1969, W. A. Shands, Geddes W. Simpson, Corinne C. Gordon
Tb60: Survey Of Internal Parasites Of Potato-Infesting Aphids In Northeastern Maine, 1963 Through 1969, W. A. Shands, Geddes W. Simpson, Corinne C. Gordon
Technical Bulletins
This technical bulletin reports the results of an annual survey conducted from 1963 through 1969 of parasitized aphids on potatoes in northeastern Maine, chiefly on Aroostook Farm, near Presque Isle. The authors discuss the role of parasites in control of aphids on potato plants not treated with insecticides and list the primary parasites and hyperparasites reared from potato-infesting species of aphids collected during the survey.
Tb56: Effects Of Differing Abundance Levels Of Aphids And Of Certain Virus Diseases Upon Yield And Virus Disease Spread In Potatoes, W. A. Shands, Geddes W. Simpson, Barbara A. Seaman, F. S. Roberts
Tb56: Effects Of Differing Abundance Levels Of Aphids And Of Certain Virus Diseases Upon Yield And Virus Disease Spread In Potatoes, W. A. Shands, Geddes W. Simpson, Barbara A. Seaman, F. S. Roberts
Technical Bulletins
In eight years during the period 1944 to 1954, a study was conducted on Aroostook Farm, Presque Isle, Maine, to develop ways of obtaining and maintaining varying levels of aphid abundance on potato plants. Methods for measuring aphid abundance and their effects on yield and virus transmission were devised. These techniques were then used to determine the effects of varying all-season levels of abundance of the aphids and of virus reservoirs of two potat o diseases upon yield of potatoes and the spread of leaf roll and spindle tuber in four varieties of potatoes. The results of that study are …
Tb57: Effects Of Cultural Methods For Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. J. Murphy
Tb57: Effects Of Cultural Methods For Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. J. Murphy
Technical Bulletins
A study was conducted at Aroostook Farm, near Presque Isle, Maine, 1954 to 1958, inclusive, to determine the effects of certain agronomic cultural practices designed to delay emergence of potato plants and to decrease their exposure to infestation by spring migrants. This technical bulletin reports the results of that study.
Tb55: Food Lists Of Hippodamia (Coleoptera: Coccinellidae), W. L. Vaundell, R. H. Storch
Tb55: Food Lists Of Hippodamia (Coleoptera: Coccinellidae), W. L. Vaundell, R. H. Storch
Technical Bulletins
Food lists for Hippodamia iredecimpunctata (Linnaeus) and the genus Hippodamia as reported in the literature are given. A complete list of citations is included.
Tb54: Importance Of Arthropod Predators In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave, C. C. Gordon
Tb54: Importance Of Arthropod Predators In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave, C. C. Gordon
Technical Bulletins
From 1942 to 1969, concurrent studies were made to identify and assess the importance of biological agents affecting abundance of the potato-infesting species of aphids in northeastern Maine. These authors report the results of studies relating to arthropod predators of aphids on the potato crop, principally from 1952 through 1969.
Tb52: Seasonal Population Trends And Productiveness Of The Potato Aphid On Swamp Rose In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave
Tb52: Seasonal Population Trends And Productiveness Of The Potato Aphid On Swamp Rose In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave
Technical Bulletins
Studies were conducted in northeastern Maine to determine seasonal population trends and productiveness of the potato aphid on swamp rose. The results presented and discussed concern chiefly chronological and phenological aspects of the utilization of swamp rose as a primary host of the aphid; time-temperature developmental requirements of the aphid in spring; productiveness of the aphid in caged colonies on swamp rose in spring; population trends of the aphid on naturally occurring, undisturbed swamp rose in spring and in fall; populations of aphid eggs on swamp rose in November and again in mid-April of the following year; and a comprehensive …