title: Evaluation of a nonconventional insecticide and appropriate application timing for destruction of gypsy moth (Lepidoptera: Lymantriidae) egg masses.
abstract: Two field studies were conducted in 2001-2002 and 2003 to evaluate the effectiveness and appropriate application timing of Golden Pest Spray Oil (GPSO) for destruction of gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), egg masses in Wisconsin. GPSO is a commercially available, registered pesticide that is predominantly comprised of a soybean-oil base (93%); its primary mode of action is by means of suffocation. Because gypsy moth spends the majority (>75%) of its life cycle in the egg stage (August-April), the potential utility of this product by arborists, city foresters, landscapers, and homeowners is high, especially because GPSO is a United States Environmental Protection Agency registered, nonconventional pesticide that is considered relatively nontoxic. When GPSO was applied at a 1:1 ratio with water, >96% control of gypsy moth egg masses was achieved, regardless of application timing (October, 3 d before egg hatch).
authors.affiliation: Department of Entomology, University of Wisconsin, Madison, WI 53706, USA.
authors.forename: R Chris
authors.initials: RC
authors.lastname: Williamson
mesh_terms: D000818:Animals; D005260:Female; D007306:Insecticides; D007915:Lepidoptera; D010063:Ovum / Q000187:drug effects; D010572:Pest Control, Biological; D013024:Soybean Oil; D013997:Time Factors
chemical_list: D007306:Insecticides; D013024:Soybean Oil