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Maize - Maydis leaf blight

Photograph of Maydis leaf blight in maize

Maydis leaf blight in Maize

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Leaf blight 

Maydis leaf blight or Southern leaf blight (Bipolarismaydis)

Frequently a problem of tropical humid areas. Infection and disease development is favoured by warm, showery, humid weather.

Leaves show small, oval, pale brown-tan spots (10-40 mm x 5 mm), with a dark border and sometimes surrounded by a pale yellow halo (spots tend to be smaller than those of Turcica leaf blight). This disease may also cause a dark rot of the seeds, beginning at the tip. The fungus survives on diseased residues, volunteer maize and grasses, and may be carried over in the seed.

Plant resistant hybrids to combat this disease.

URL: http://www.dpi.qld.gov.au/cps/rde/xchg/dpi/hs.xsl/cps/rde/dpi/hs.xsl/26_4570_ENA_HTML.htm

© The State of Queensland, Department of Primary Industries and Fisheries 1995 - 2009.
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