National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Onion (Allium cepa L.) is an important vegetable and spice crop in Manipur. White rot of onion caused by Sclerotium rolfsii is found in destructive condition at onion growing locations in the valley districts of Manipur. The highest disease incidence was recorded in Imphal West district with maximum disease incidence being recorded from Malom. The lowest disease incidence was observed in Imphal East district with minimum disease incidence being recorded from Pukhao. The maximum disease incidence was observed during the month of April and the minimum disease incidence was observed in February in all the districts. The symptoms of white rot were not obvious during the first three months after planting. It became prominent in the month of February with yellowing of leaves followed by wilting as the disease progresses and most prominent at April when the base of onion stem starts rotting and eventually become covered with white cottony mycelial growth of the fungus in the presence of sclerotia. When such plants are uprooted, the roots, base plate, bulb scales and sometimes, the entire bulbs are decayed and watery.
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