November-December 2025

All of the biological products tested in the trial showed measurable efficacy. The early findings show that these products could be part of an integrated pest management program

The results helped refine ABC’s next phase of work. Trials in 2025 will zero in on bloom-time applications, exploring program-based strategies that rotate or tank- mix biological and conventional products to maintain efficacy and resistance management. Laying the Groundwork for Practical Adoption Beyond performance data, the project is helping ABC and its research partners understand the nuances of working with biologicals, everything from refrigeration and handling requirements to environmental sensitivity and spray timing and mixing. “Biopesticides often need to be applied earlier, under the right conditions, and stored carefully to maintain viability,” Fann noted. “These details matter, and they’re part of what we’re learning to communicate better.” ABC’s long-term vision is to increase the number of biological products included in UC IPM’s conventional fungicide guidelines. This resource could further help

PCAs and growers plan rotations that extend the life of existing tools while meeting evolving regulatory expectations. An Invitation to Collaborate Fann encouraged both growers and biological product developers to engage directly with ABC’s pest research program. “If you’re a grower or PCA interested in participating in future trials, or if your company has a biological product that could benefit almond production, we want to hear from you,” she said. “The industry is already leading in stewardship — this is our chance to lead in biological innovation too.” Interested companies or growers may email Lauren Fann: lfann@almondboard.com Article Contributed by the Almond Board of California

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NOVEMBER–DECEMBER 2025

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