Abstract            Volume:12  Issue-6  Year-2024         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

In the present study, bacterial and fungal biocontrol agents were tested individually and in combination for the induction of defence related enzymes or compounds against root rot disease under pot culture conditions. The results revealed that the combined application of Pseudomonas fluorescens and Trichoderma asperellum (Pf1 + TTH 1) as vermicompost-based bioformulations significantly increased the activities of phenylalanine ammonia-lyase (PAL), superoxide dismutase (SOD), catalase (CAT), β-1,3 glucanase, peroxidase (PO), and polyphenol oxidase (PPO) in sugarbeet plants against S. rolfsii. This effect was followed by treatment with Pf1 + EPCO 16 (Bacillus subtilis). These increased activities were observed up to 90 days after seed treatment (DAST). Other combination treatments, such as Pf1 + EPCO 16 + TTH 1 and EPCO 16 + TTH 1, also showed comparatively higher PAL, SOD, CAT, glucanase, PO, and PPO activities than their individual applications or the untreated control.

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