Causal Agent:
Fungi complex (Phoma sorghi, Phaeosphaeria maydis)
| Characteristic Symptoms: | |
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Initial symptom of the disease first appears as pale green or chlorotic spot. |
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As the disease progresses, larger bleached or dried lesions with dark brown irregular margins will be formed. |
| Conditions for Disease Development: | |
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Favourable environmental conditions for the disease include high rainfall and relatively low night temperatures. |
| Management and Control: | |
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Use of resistant varieties, if available.
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Apply fungicides such as mancozeb (e.g. Dithane®, Manzate®) or pyraclostrobin(e.g. Bumper®, Tranzole ®. ) to control the disease. |
References
Casela, C.R. 1998. The Phaeosphaeria Leaf Spot. In Diagnosing Maize Diseases in Latin America (Eds. C. Casela, R. Renfro and A.F. Krattiger). ISAAA Briefs No. 9. ISAAA: NY. Pp.15-17.
The CIMMYT Maize Program. 2003. Maize Diseases: A Guide for Field Identification. 4th edition. Mexico, D.F.: International Maize and Wheat Improvement Center (CIMMYT).
The CIMMYT Maize Program. 2003. Maize Diseases: A Guide for Field Identification. 4th edition. Mexico, D.F.: International Maize and Wheat Improvement Center (CIMMYT).
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