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Occurrence and Distribution of Iris yellow spot virus on Onion in Mauritius

K. Lobin, H. R. Pappu, and S. P. Benimadhu

August 2012


Iris yellow spot virus (IYSV), a damaging viral pathogen of onion, was reported for the first time on onion in Mauritius in 2008. A survey was undertaken from 2008 to 2010 to determine the status of the virus in the major onion-growing localities. The disease was found to be prevalent in the east, southeast, south and west of the island in bulb and seed production stands. The high incidence of IYSV in onion fields in Mauritius shows the need for developing integrated management strategies to reduce its negative impact.


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