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Full-Text Articles in Entomology
Tb133: Experimental Stream Application Of B.T.I. For Human Nuisance Black Fly Management In A Recreational Area, K. Elizabeth Gibbs, Rhonda J. Boyer, Brian P. Molloy, Dorothy A. Hutchins
Tb133: Experimental Stream Application Of B.T.I. For Human Nuisance Black Fly Management In A Recreational Area, K. Elizabeth Gibbs, Rhonda J. Boyer, Brian P. Molloy, Dorothy A. Hutchins
Technical Bulletins
Biting and swarming black flies are abundant in Maine and can cause serious discomfort to humans, especially in recreational areas where their presence may substantially decrease satisfaction in outdoor activities. In 1985, 1986 and 1987 a series of experimental applications of B.t.i. was made on property owned by the Sugarloaf Mountain Corporation. The 198 5 study determined the persistenc e o f B.t.i. in stream and river water and the concentration necessary to achieve >90% mortality in black fly larvae. It also indicated that B.t.i. had no detectable impact on non-target organisms. In 1986 and 1987 the objective was to …
Tb130: Sequential Sampling In Surveys Of Overwintering Larvae Of Spruce Budworm, Choristoneuera Fumiferana (Lepidoptera: Tortricidae), J. B. Dimond, Henry Trial Jr.
Tb130: Sequential Sampling In Surveys Of Overwintering Larvae Of Spruce Budworm, Choristoneuera Fumiferana (Lepidoptera: Tortricidae), J. B. Dimond, Henry Trial Jr.
Technical Bulletins
A sequential sampling system for classifying infestation levels of overwintering larvae of the spruce budworm, Choristoneura fumiferana, (Clemens), is described. Sequential tables for critical densities of larvae on balsam fir and red spruce are presented for 70%, 80%, and 90%, confidence intervals. The system is based on data collected in Maine and uses a maximum of 6 branches, 3 from fir and 3 from spruce. Simulations illustrating error rates and effort saved using the system are discussed.