CONTROL OF PHAULACRIDIUM-VITTATUM (SJOSTEDT) (ORTHOPTERA, ACRIDIDAE) IN-FIELD CAGES USING AN OIL-BASED SPRAY OF METARHIZIUM-FLAVOVIRIDE GAMS AND ROZSYPAL (DEUTEROMYCETINA, HYPHOMYCETES)

Authors
MILNER RJ HARTLEY TR LUTTON GG PRIOR C
Citation
Rj. Milner et al., CONTROL OF PHAULACRIDIUM-VITTATUM (SJOSTEDT) (ORTHOPTERA, ACRIDIDAE) IN-FIELD CAGES USING AN OIL-BASED SPRAY OF METARHIZIUM-FLAVOVIRIDE GAMS AND ROZSYPAL (DEUTEROMYCETINA, HYPHOMYCETES), Journal of the Australian Entomological Society, 33, 1994, pp. 165-167
Citations number
11
Categorie Soggetti
Entomology
Journal title
Journal of the Australian Entomological Society → ACNP
ISSN journal
00049050
Volume
33
Year of publication
1994
Part
2
Pages
165 - 167
Database
ISI
SICI code
0004-9050(1994)33:<165:COP((A>2.0.ZU;2-I
Abstract
Conidia of an isolate of Metarhizium flavoviride, F1985 suspended in o il were sprayed onto mainly adult Phaulacridium vittalum (Sjostedt) in field cages at two dose rates: 2 x 10(9) and 2 x 10(8) conodia/mL. Bo th rates were effective in killing all P. vittatum in the cages in 3 w eeks, under the prevailing cool conditions. Samples of grasshoppers ta ken from the treated cages at 4, 8 and 14 d post-spraying died within 1-6 d when placed at constant 26-degrees-C in the laboratory. Samples of foliage fed to healthy grasshoppers showed that some infectious con idia persisted for 14 d. The results indicate that it may be possible to control P. vittatum with an oil-based spray of conidia of M. flavov iride.