title: Dose-morality and large-scale studies for controlling codling moth (Lepidoptera: Tortricidae) eggs on 'd'Agen' plums by using methyl bromide.
abstract: Codling moth, Cydia pomonella (L.), eggs on 'd'Agen' cultivar of plums, Prunus salicina Lindl., were treated with methyl bromide to determine if a quarantine treatment could be developed so that the plums could be exported to Japan from the United States. Small-scale tests consisted of treating codling moth eggs on plums with various doses of methyl bromide at 20 degrees C for 2 h. Small-scale tests showed that 0- to 24-h-old eggs of codling moth on the plums were controlled by doses > 22.5 g/m3. Because testing showed that 48 g/m3 had no adverse effect on the quality of plums, this dose was chosen for large-scale testing to establish the quarantine dose. Large-scale tests consisted of treating plums at 18.5 degrees C for 2 h using methyl bromide at a dose of 48 mg/liter. Large-scale tests showed that the dose of 48 g/m3 killed all 0- to 24-h-old codling moth eggs exposed on plums in packing cartons without affecting the quality of the plums.
authors.affiliation: Horticultural Crops Research Laboratory, USDA-ARS, Fresno, CA 93727, USA.
authors.forename: J G
authors.initials: JG
authors.lastname: Leesch
authors.forename: J S
authors.initials: JS
authors.lastname: Tebbets
authors.forename: D M
authors.initials: DM
authors.lastname: Obenland
authors.forename: P V
authors.initials: PV
authors.lastname: Vail
authors.forename: J C
authors.initials: JC
authors.lastname: Tebbets
mesh_terms: D000818:Animals; D001681:Biological Assay; D005638:Fruit; D006842:Hydrocarbons, Brominated; D007300:Insect Control / Q000379:methods; D009036:Moths; D010063:Ovum
chemical_list: D006842:Hydrocarbons, Brominated; C005218:methyl bromide