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 |
In vitro antagonism of native biocontrol agents on coconut pathogens revealed that all the three isolated native Trichoderma spp were found inhibitory to the mycelia growth of Thielaviopsis paradoxa and Phytophthora palmivora. Maximum percent inhibition of mycelia growth of Thielaviopsis paradoxa and Phytophthora palmivora was obtained by Trichoderma viride followed by Trichoderma hamatum and Trichoderma harzianum. Pseudomonas fluorescens fared well against the coconut pathogens with the percent inhibition of mycelial growth of pathogen to an extent of 68.32 to 69.38%. Volatile metabolites of Trichoderma spp suppressed the mycelia growth of Thielaviopsis paradoxa and Phytophthora palmivora. In case of non volatile metabolites, significant inhibition of mycelia growth of test pathogens was noticed with Trichoderma spp at 100% concentration. Studies on the production of volatile and non volatile metabolites of Pseudomonas fluorescens against coconut pathogens revealed that the test pathogens Thielaviopsis paradoxa and Phytophthora palmivora were inhibited significantly. These in vitro studies offers scope for effective management of disease at field level.
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