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The Assam and North-eastern regions of India recognized as diverse repositories of wild and cultivated banana cultivars, confront a significant threat to banana varieties, Malbhog due to Fusarium wilt disease caused by Fusarium oxysporum f.sp. cubense (Foc). This study investigates the in-vitro bioefficacy of indigenous bioagents and new-generation chemical compounds against Foc to develop an integrated module subsequently, in line with the worldwide pursuit of environmentally conscientious and high-performance agricultural practices.In this study, four bioagents viz., Bacillus vallismortis, Bacillus amyloliquefaciens, Trichoderma harzianum, and Talaromyces pinophilus were screened in-vitro against Foc revealed the highest efficacy of B. vallismortis with 68.22 % mycelial growth inhibition of Foc followed by B. amyloliquifaciens with (60.05%) and the least inhibition was exhibited by T.pinophilus with (50.05%).To identify new generation chemical compounds, namely Propiconazole, Azoxystrobin, Tebuconazole + Trifloxystrobin were tested with a standard check Carbendazim wherein all the chemicals significantly inhibited the mycelial growth of the pathogen over control with Tebuconazole + Trifloxystrobin combination fungicide showing highest percent inhibition of 94% at 0.1% concentration followed by Carbendazim at 0.1%. Our study has identified potential microbial strains and chemical fungicides which can be further explored for the development and exploration of bio-fungicide and chemical fungicide-based biointensive integrated management of Fusarium wilt menace in malbhog banana in the region.
Baruah et al. (Tue,) studied this question.