UPDATE OF PINE VOLE RESEARCH AT THE KEARNEYSVILLE EXPERIMENT FARM

As reported in the 1979 Proceedings of the Third Eastern Pine and Meadow Vole Symposium, an air and ground broadcast and hand placement in runs and mouse-ateria bait stations (tubes) experiment was started on December 5, 1978. Treatments were to apply brodifacoum (Volak) at 10. 0 lb. /A and diphacinone (Ramik-Brown) at 10. 0 lb. and 20. 0 lb. /A air broadcast and 10. 0 lb. /A ground broadcast and hand placement. The air broadcast treatments were not evenly distributed. Ground catch of the air broadcast of brodifacoum resulted in one portion of the treated area receiving 24% more toxicant. The air broadcast treatments of diphacinone resulted in 12. 5 lb. and 37. 5 lb. /A instead of the desired 10. 0 lb. and 20. 0 lb. /A toxicant distribution. A second diphacinone application was made January 5, 1979 to all diphacinone treatments except for the two air broadcast plots. These two plots were treated January 25, 1979 by ground application equipment