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 |
Coconut palm, despite its hardy nature, is affected by a number of diseases. A wide range of fungi attack different parts of coconut namely, crown, stem and root. Among the 173 fungal species reported on coconut, only a few cause serious disease problems and are difficult to control effectively. Root wilt disease, bud rot, basal stem rot, stem bleeding and leaf rot are the major diseases causing heavy crop losses in India. To estimate the major diseases of coconut in south farm, extensive field survey was undertaken from January to April 2017 followed by assessment of the damage level. The entire South farm was divided into 4 blocks. By following the methodology of Per cent Disease Index and Per cent Disease Incidence, the severity of these diseases that cause considerable yield loss and its incidence were recorded. The results revealed that compared to all other blocks, EF is found to be infected with 3 foliar diseases viz., Grey leaf blight, Leaf blight and Leaf rot with maximum disease incidence of 43.05%, 35.12% and 24.15% respectively. There was a notable increase of leaf blight in block G from 18.03% to 31.05% during the survey period. The diseases like Kerala wilt, Stem bleeding and Bud rot were observed at a minimum level. The variety Chowghat orange was susceptible to all foliar diseases observed in south farm.
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