Slow-release granulated biofertilizer consortium for managing fusarium wilt in bananas

Overview

Fusarium wilt is one of the most destructive diseases affecting banana production worldwide, causing significant yield losses and economic hardship for growers. Current biofertilizer solutions are predominantly liquid formulations that lack slow-release properties, requiring frequent reapplication and increasing labor and input costs. This research proposes a novel granulated biofertilizer that combines two complementary microbial strains — Pseudomonas and Trichoderma — into a single slow-release formulation. The consortium delivers dual functionality: suppression of Fusarium wilt disease and enhancement of plant vegetative growth. By reducing the need for repeated applications, the formulation offers a more practical and cost-effective disease management option for banana farmers.

Technical specifications

Key features:

• Microbial consortium: Combines Pseudomonas and Trichoderma strains with complementary modes of action for disease suppression
• Granulated, slow-release matrix: Designed to gradually release microbes into the soil over time, extending the period of efficacy compared to liquid formulations
• Dual-function performance: Reduces Fusarium wilt severity by up to 67% relative to untreated controls and other formulation types (liquid, alginate beads, talc powder)
• Growth promotion: Significantly improves vegetative growth parameters in banana plants compared to alternative formulations (statistically significant at p<0.05)
• Reduced application frequency: Slow-release properties lower the number of applications required per cropping cycle, decreasing labor and material costs for farmers

Comparison with conventional formulations:

Laboratory testing evaluated the granulated consortium against liquid, alginate bead, and talc powder formulations. The granulated form consistently outperformed all alternatives on both disease suppression and plant growth metrics.

Technology readiness level

The biofertilizer formulation has completed initial laboratory validation, demonstrating measurable reductions in Fusarium wilt severity and improvements in plant growth. The next phase of validation will focus specifically on characterizing the release kinetics of the granulated formulation compared to conventional liquid biofertilizers in soil, and confirming sustained disease suppression and growth benefits under field-relevant conditions. This follow-up study is expected to take at least two years. The research team is seeking a partnership to support formulation development, provision of consumables, reagents, and planting materials, as well as funding for key personnel to advance the technology toward broader deployment.