Improving the biocontrol potential of <i>Steinernema feltiae</i> against <i>Delia radicum</i> through dosage, application technique and timing

Abstract

Plant tray spraying provides better placement of Steinernema feltiae than soil drench treatments for control of Delia radicum. Plant mortality was not dose-dependent in the presented trials, unlike the reduction of maggot numbers. Further research into timing and application technique of follow-up treatments with S. feltiae is required to increase efficacy to commercial standards.