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Incidence and Severity of Blight Disease of Tagetes erecta and T. patula


Mahfuza Aktar1 and Shamim Shamsi*

Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh

ABSTRACT: Blight symptom was recorded on different parts of Tagetes erecta and T. patula during the tenure of 2009 to 2014. Disease incidence was started from January and gradually increased up to May. The Lowest disease severity (DS 1) was recorded in the month of January and the highest DS was (DS 9) in the month of May. Rainfall and humidity did not show any effect on disease development but temperature shows noticeable effect on disease development. A total of 20 species of fungi were isolated from Tagetes erecta and T. patula. Among the isolated fungi Alternaria alternata, Aspergillus fumigatus and Curvularia lunata were found to be pathogenic to Tagetes erecta and T. patula.

KEYWORDS: Incidence, Severity, blight disease, Tagetes erecta, Tagetes patula

CORRESPONDENCE:Shamim Shamsi

 

 
 
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