National Academy of Agricultural Sciences (NAAS)
|
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 |
Early blight of potato caused by Alternaria alternata is one of the major diseases causing considerable yield loss. Efficacy of bio-agents was studied and revealed the all four Trichoderma species significantly reduced the mycelial growth of the pathogen over the control by dual culture method. Significantly maximum inhibition of mycelial growth was obtained with T. viride (57.08%) followed by T. azospirillum (50.00%), T. harzianum (43.26%) and T. virens (37.08%) of the pathogen after 48 hours of incubation. In present study, T. viride was observed more inhibitory against A. alternata. In vitro efficacy of leaf extract media from host as well as synthetic and semi synthetic media were used for the optimum mycelial growth and sporulation of the Alternaria alternata. Among the media tested, the potato leaf agar was significantly superior and most effective medium for growth as well as dry mycelial weight followed by PDA. However potato leaf agar medium was also superior for sporulation of A. alternata. Whereas, the potato stem agar, V-8 juice agar, pea agar, oat meal agar and czapek’s agar medium were least effective in mycelia growth.
Citations |
 |
 |
 |
 |
