Journal of the Australian Entomological Society (1994) 33, 199-201

P.G. Allsopp, N.G. Mcgill, K.A. Licastro and R.J. Milner (1994)
Control of larvae of Antitrogus consanguineus (Blackburn) (Coleoptera: Scarabaeidae) by injection of Metarhizium anisopliae conidia into soil
Journal of the Australian Entomological Society 33 (3), 199-201
Abstract: Metarhizium anisopliae strain EF173 grown on 2 kg lots of wheat grain in autoclave bags yielded 3.99 × 10¹³ conidia per bag. an aqueous suspension of conidia was injected into the soil around sugarcane plants infested with southern one-year canegrub Antitrogus consanguineus at the rate of 7.5 × 10¹⁰ conidia per plant. the number of larvae decreased 42% by 64 d post-treatment. 49% of the surviving larvae died from M. anisopliae after an additional 25-d incubation period in the laboratory. In another trial, a higher dose of 3.75 × 10¹¹ conidia per plant was applied, yet there was no significant reduction in larval numbers 42 d post-treatment. However, 59% of live larvae removed from treated plots and held in the laboratory died from M. anisopliae infection within 25 d. Injection of liquid formulations of M. anisopliae conidia has considerable potential for use in the control of canegrubs; the greatest constraint is the long time to achieve significant mortality.
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Database assignments for author(s): Richard J. Milner

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
application technology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Antitrogus consanguineus	Sugarcane (Saccharum officinarum)	Australia (NT+QLD)
Metarhizium majus (entomopathogen)	Antitrogus consanguineus	Sugarcane (Saccharum officinarum)	Australia (NT+QLD)