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 |
The present study was undertaken on integrated management of root rot of cotton caused by Rhizoctonia solani to know the disease incidence; survey was carried out during 2017 in 18 villages of different six cotton growing district viz., Udaipur, Hanumangarh, Sri Ganganagar, Chittorgarh, Banswara and Dungarpur. Cultural and morphological variability of each isolates was tested under laboratory condition to find out the aggressiveness of the pathogens (isolates) and results find out that isolate SNG Rs-03 from Sri Ganganagar was the most virulent compare to other isolates. Isolate of Sri Ganganagar (SNS Rs-03) had 90 mm growth diameter (fast growing) with cottony white growth, aerial at centre with zonation, abundant and submerged sclerotia production. Among the different isolates of R. solani, sclerotia of CHT Rs-04 were the largest in size measuring 1.8 (1.5-2.0) × 1.2 (0.9-1.4) mm, Pathogenic variability and disease symptomology among six isolates was test on cotton cultivar “Jai BG-II” growing in cage house and results observed that isolate from Sri Ganganagar (SNG Rs-03) highly aggressive with high degree of symptoms.
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