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Causal Agent: 

Fungus (Rhizoctonia solani f. sp. sasakii)

Characteristic Symptoms:
 
The disease develops on leaves, sheaths, and stalks and can spread to the ears.
   
Leaves and sheaths of corn develop a characteristic symptoms of concentric bands and rings that are discolored, brown, tan or grey in color.
   
Ear rot is characterized by light brown, cottony mycelium on the ear and the presence of small, round, black sclerotia is usually observed after some time.
   
Conditions for Disease Development:
 
BLSB is a serious problem to maize production in many hot and humid environments in the tropics and subtropics.
   
High relative humidity and rainfall significantly favors development and spread of this disease.
   
High crop densities influence disease severity.
   
Management and Control:
 
Use of resistant varieties, if available.
   
Use fungicide or biocon-treated seeds (e.g. carbendazim, thiram, Trichoderma viridi).
   
Remove and burn infected plant parts or plants.
   

Apply fungicides such as metalaxyl+mancozeb (e.g. Ridomil Gold MZ 68 WGⓇ, Apron XL 350 ESⓇ), difenoconazole+propiconazole (e.g. ArmureⓇ), propiconazole (e.g. Bumper®, Tranzole ®) or carbendazim (e.g. Bavistin®).
 
   

References

http://maizedoctor.org/banded-leaf-and-sheath-blight-extended-information

Singh,A and Shahi, J.P. 2012.Banded leaf and sheath blight: an emerging disease of maize (Zea mays L).Maydica 57-2012.

The CIMMYT Maize Program. 2003. Maize Diseases: A Guide for Field Identification. 4th edition. 

Mexico, D.F.: International Maize and Wheat Improvement Center (CIMMYT).

Rani, D. , Reddy, N. and Devi, U. 2013. Management of maize banded leaf and sheath blight with fungicides and biocontrol agents.  Annals of Biological Research, 2013, 4 (7):179-184.

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