Date of this Version
A question often raised by apple growers, researchers, and agencies is "What does it cost on a per-acre basis to control pine and meadow voles?". In most cases this question refers to the methods and techniques presently known. At the Second Pine and Meadow Vole Symposium we described a new long-term study (Sullivan and Hayne 1978). This study provides answers to some of these basic cost questions. This year I am presenting some cost figures for the 1977 and 1978 seasons, recorded in treating the orchards in the study described at Beltsville. The efficacy of the treatments in controlling voles is not considered in this paper.