Biocontrol Science and Technology (1998) 8, 479-484

J. Lawrie, M.P. Greaves and V.M. Down (1998)
Drechslera sp. (Pyrenophora chaetomioides (Speg.)), a potential biocontrol agent for Bromus sterilis and other Bromus spp.
Biocontrol Science and Technology 8 (4), 479-484
Abstract: Infection by a Drechslera sp. (perfect stage, Pyrenophora chaetomioides (Speg.)), isolated from Bromus sterilis , killed B. sterilis, B. commutatus and B. secalinus. B. diandrus and B. hordeaceus were both infected but not killed. Successful infection required a 24-h dew period. Reduction of the dew period to 8 h significantly reduced the infection of all Bromus spp. tested as determined by leaf necrosis. Inoculation with a low inoculum concentration (2 104 conidia/ml) produced little dry weight reduction, but at 2 105 conidia/ml with an 8-h dew period the dry weights of B. commutatus , B. diandrus , B. secalinus and B. sterilis were reduced by 11-25%. Extending the dew period to 24 h resulted in 77% mortality of B. sterilis and 93% mortality of B. commutatus and B. secalinus.
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Link to article at publishers website
Database assignments for author(s): John Lawrie

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bromus secalinus (weed)
	Bromus sterilis (weed)
Pyrenophora chaetomioides (weed pathogen)	Bromus secalinus (weed)
Pyrenophora chaetomioides (weed pathogen)	Bromus sterilis (weed)