Next-generation bioformulation for enhanced microbial survival and biocontrol efficiency

Overview

This research proposes a next-generation bioformulation that combines conventional biocontrol microbial strains with their active metabolites and cell-free culture supernatants. The approach addresses key limitations of cell-based bioformulations, including poor field survival and inconsistent performance. By integrating metabolomics with conventional microbiological tools, the formulation is designed to deliver enhanced pathogen control, improved nodulation in legumes, and minimal non-target impact on soil health.

Technical specifications

Core approach:

• Amalgamation of potent biocontrol strains with active ingredients responsible for biocontrol activity
• Use of cell-free culture supernatant alongside or in place of live microbial cells
• Polyphasic methodology combining metabolomics with conventional microbiological tools
• Targeted pathogen model using Fusarium species across multiple crops including pigeonpea and tomato
• Evaluation of formulation impact on host plant attributes and soil microbiome, including bacterial and fungal components

Key validated outcomes:

• Enhanced nodulation in pigeonpea under Indo-Gangetic plain conditions
• Improved control of Fusarium wilt in field-validated trials on farmer's fields
• Demonstration that cell-free supernatant outperforms cell-only formulations
• Ecologically safe profile with minimal non-target soil health impact

Technology readiness level

The technology has progressed through controlled laboratory conditions, experimental field validation, and farmer's field trials. Published work documents efficacy against Fusarium wilt in both pigeonpea and tomato systems. Future work includes metabolomic characterization of Bacillus and Pseudomonas biocontrol strains, development of metabolite-amended formulations, and comprehensive soil microbiome assessment to certify ecological safety.