Efficacy and Phytotoxicity of Selected Pesticides for the Suppression of the Brown Garden Snail, Helix aspersa
Molluscicides for control of the brown garden snail (Helix aspersa) were evaluated and liquid formulations of Guthion (azinphosmethyl) and Zectran (mexacarbate) provided the most rapid and greatest kill. With granular formulations, snail mortality was highest (92%) using a 4% metaldehyde formulation at 67 kg ai/ha (60 lbs ai/acre). Applications of Guthion (azinphosmethyl), Zectran (mexacarbate) and Mesurol (methiocarb) at 4 g ai/l (equivalent to 4 lbs/100 gal) to 20 species of woody and herbaceous plant species resulted in no observed phytotoxicity.
Contributor Notes
This research was supported in part by the California Association of Nurserymen and the Virginia Nurserymen's Association.
2Assistant Professor of Entomology, Department of Entomology, University of California, Riverside, CA 92521.
3Entomologist, Virginia Truck and Ornamentals Research Station, Virginia Beach, VA 23455.