Potential for use of garlic oil to control Lycoriella ingenua (Diptera: Sciaridae) and Megaselia halterata (Diptera: Phoridae) in commercial mushroom production

摘要

The repellent effects of garlic oil toLycoriella ingenuaandMegaselia halteratawere examined in static olfactometers. In a choice between treated and control glass beads, adult femaleM.?halteratawere repelled by garlic solutions at concentration levels as low as 0.1% (v/v). When provided with a choice between compost treated with a range of garlic concentrations (0.1–20%) adult femaleM.?halteratademonstrated a clear preference for untreated compost. In contrast, olfactometer studies involvingL.?ingenuafemales were inconsistent. For L.ingenua, the highest concentration of garlic oil (20%) significantly reduced subsequent adult emergence from treated spawned compost. With increasing concentrations of garlic oil,M.?halterataemergence was progressively reduced. For both pest species, application of garlic oil post-oviposition had no significant effect on subsequent survival of immature life stages and surprisingly enhanced final emergence.Highlights?The repellent effects of garlic oil toLycoriella ingenuaandMegaselia halteratawere examined in static olfactometers.?Adult femaleM.?halteratawere repelled by garlic solutions in glass beads at concentration levels as low as 0.1% (v/v).?Olfactometer studies involvingL.?ingenuafemales were inconsistent.?With increasing concentrations 1-20% of garlic oil,M.?halterataemergence was progressively reduced.?For both pest species, garlic oil applied post-oviposition had no effect on subsequent survival of immature life stages.