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Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana

Bhuiyan, S. A., Ryley, M. J., Galea, V. J., Tay, D. and Lisle, A. T. (2009) Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana. Australasian Plant Pathology, 38 (5). pp. 496-499. ISSN 1448-6032

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Article Link(s): https://doi.org/10.1071/AP09032

Abstract

The effect of conidial concentration and length of stigma wetness period on infection of sorghum spikelets by Claviceps africana was studied in a controlled environment experiment. Aspore concentration of at least 106 conidia/mL was required for maximum infection on sorghum panicles. Maximum infection occurred during a stigma wetness period between 4.5 and 6 h. Approximately 11–15% infection occurred when stigmas had been dried immediately after inoculation. This study demonstrated that the stigma wetness is an important parameter in sorghum ergot epidemiology.

Item Type:Article
Business groups:Crop and Food Science
Subjects:Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Field crops > Sorghum
Plant pests and diseases > Plant pathology
Deposited On:02 Feb 2022 23:38
Last Modified:02 Feb 2022 23:38

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