U.S. Department of Agriculture: Agricultural Research Service, Lincoln, Nebraska
Document Type
Article
Date of this Version
2005
Abstract
Laboratory soil bioassays were performed at economic Weld rates for in-furrow (3.85 x 106 spores/g dry soil) and broadcast (3.85 x 105 spores/g dry soil) applications with three isolates of Metarhizium anisopliae (F52, ATCC62176, and ARSEF5520) and one isolate of Beauveria bassiana (GHA). All isolates tested were infective to second instar Delia radicum (L.). The conditionally registered M. anisopliae isolate (F52) performed best killing an average of 85 and 72% of D. radicum larvae at the high and low concentration, respectively. The mean LC50 and LC95 of F52 against second instar D. radicum was 2.7 x 106 and 1.8 x 108 spores/g dry soil, respectively. The use of F52 in an integrated management program is discussed.
Comments
Published in Journal of Invertebrate Pathology 89 (2005) 179–183.