Efficacy of Soil Applications of Metarhizium Anisopliae (Metsch.) Sorokin Conidia, and Standard and Lyophilized Mycelial Particles Against Scarab Grubs
Document Type
Article
Journal/Book Title/Conference
Journal of Invertebrate Pathology
Volume
59
Issue
1
Publication Date
1-1-1992
First Page
54
Last Page
60
Abstract
The efficacy of soil inoculations of Metarhizium anisopliae (Metsch.) Sorokin propagules against third-instar grubs of the Japanese beetle and European chafer was investigated in the laboratory. Inoculum consisted of conidia; standard (unlyophilized mycelial particles with size ranges of <125, 125–250, and 250–500 μm; and lyophilized mycelial particles with size ranges of 125–250 μm and 250–500 μm. Grub mortality occurred significantly quicker in mycelium-inoculated compared with conidia-inoculated soil. Total mortality, however, did not differ significantly between the two types of inoculum. Pathogen titers were consistently higher in soil inoculated with 250- to 500-μm-size compared to 125- to 250-μm-size particles. Lyophilization of mycelial particles did not significantly affect soil titers or pathogenicity in two of the three bioassays conducted.
Recommended Citation
Krueger, S.R., M.G. Villani, A.S. Martins, and D.W. Roberts. 1992. Efficacy of soil applications of Metarhizium anisopliae (Metsch.) Sorokin conidia, and standard and lyophilized mycelial particles against scarab grubs. J. Invertebr. Pathol. 59: 54-60.
