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Maize - Turcica leaf blight

Photograph of Turcica leaf blight on maize leaf

Turcica leaf blight in maize

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Turcica/turcicum leaf blight or northern leaf blight (Exserohilum turcircum) can be found in all regions and may be serious in susceptible hybrids. Warm wet weather favours infection and disease development.

Leaves show long, spindle-shaped, greyish-green, water-soaked spots (up to 150 mm x 20 mm), which turn light purplish-brown or grey. In favourable conditions the spots may join, blighting almost the entire leaf. The fungus survives on volunteers and residues and is spread by wind and rain.

Choose resistant hybrids and avoid sequential plantings (stops disease build-up) as chemical control is usually not economic

URL: http://www.dpi.qld.gov.au/cps/rde/xchg/dpi/hs.xsl/cps/rde/dpi/hs.xsl/26_4571_ENA_HTML.htm

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