Influence of Moisture Content on Temperature Tolerance and Storage of Metarhizium flavoviride Conidia in an Oil Formulation
Titel:
Influence of Moisture Content on Temperature Tolerance and Storage of Metarhizium flavoviride Conidia in an Oil Formulation
Auteur:
Hedgecock, S. Moore, D. Higgins, P. M. Prior, C.
Verschenen in:
Biocontrol science and technology
Paginering:
Jaargang 5 (1995) nr. 3 pagina's 371-378
Jaar:
1995-09-01
Inhoud:
Investigations of the temperature tolerances of Metarhizium flavoviride conidia, of different moisture contents, in an oil formulation were carried out. The conidia were dried to 5, 9, 15 or 19% moisture contents and exposed to a range of temperatures, -15, 12, 25, 38, 48 and 55 C. Viability declined due to high temperatures and high moisture contents. After 4 months of storage, the conidia were at over 80% viability in all but the 19% moisture content group of the 25 C treatment and all the samples stored at lower temperatures. In a second experiment, conidia dried to 4-5% moisture content showed greater temperature tolerance than conidia with higher moisture contents. Short-term storage under adverse conditions could be feasible with conidia dried to a suitable degree.