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Chlorotic streaks on sorghum showing limit of systemic infection on lower leaf (Rob Williams, CABI)
Chlorotic streaks and white cottony growth on the lower surface of the leaf (Parthasarathy Seethapathy, Tamil Nadu Agricultural University, Bugwood.org)
Destroy all the alternative hosts (sugarcane and sorghum) and volunteer plants around the field after harvest
Avoid ratooning sorghum for avoid them acting as source of inoculum
Burn all the infected debris after harvest to reduce primary inoculum
Deep ploughing of to burry infected residues
Do not plant maize close to sugarcane field
Do not intercrop maize with sugarcane
When buying maize seed by seed pre-treated with fungicides
Monitoring
Monitor plants as soon as they have their first leaves as early as 9 days after germination. Monitoring needs be continued up until the floweing period
Look on the older plants for chlorotic (yellow) strips that begins at the base with clearly defined margin between diseased and healthy tissues
Look for leaves that are narrower and more erect than the healthy leaves
Look for downy covering (whitish powder) on underside of the leaves
Direct Control
Rogue out and bury all the infected plants as soon as detected to reduce the spread of disease caused by spores in the field within the season
Direct Control
Restrictions
Fungicides are not generally recommended to smallholder farmers to manage this disease
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AUTHOR(S): Johnny I.G. Masangwa, Department of Agricultural Research Services, MoAIWD
