Date of this Version
At last year's meeting in Beltsville, William T. Sullivan, Jr., read a paper describing an experiment we had set up to compare vole control methods (Sullivan and Hayne 1978). In particular, this investigation attempts to measure the effect of clean orchard culture. This year I am describing some of our experiences with this experiment, with a preliminary appraisal of the different methods of study. Obviously, our observations must be accepted as very tentative, made as they are so early in the experiment.