ArborTIMES™ Winter 2026

Research at the nation- al level is pushing inno- vation even further. “The EPA recently ap- proved a new line of nematicide products containing an active in- gredient which is high- ly effective on the group of nematodes that in- cludes the BLD-causing pest,” Borden explained. “While the new tool has the same mode of ac- tion as the current and very effective fluopy- ram-based treatment, the advantage is the

promising results in the fight against beech leaf disease,” he noted. “Canopy health trials conducted on Long Island, New York show excellent nematode control, particularly when paired with the 9-gallon AMP I.V. injection system.” His team’s experience highlights how injections are evolving to better target BLD at the canopy level. Meanwhile, other professionals are seeing progress with different delivery systems. “We are seeing promising results with foliar applications of a nematicide called Fluopyram. As we are following the science in real time, the industry is finding that we can get acceptable coverage at a lower rate than originally thought,” Whisple reported. His observations suggest that foliar applications may offer flexibility and efficiency as the industry learns more about rate optimization.

Foliar nematode Litylenchus crenatae, the cause of Beech Leaf Disease.

potential for a soil-applied treatment for root uptake. We plan to evaluate these products as they become available.” His team’s upcoming evaluations may open the door to additional, more ac- cessible treatment options.

Tree care is never one-size-fits-all. When it comes to IPM, true success de- pends on recognizing the individuality of each tree and developing manage- ment plans tailored to specific needs and vulnerabilities.

“Every tree is a unique living thing and

DISEASE DEFENSE + RECOVERY BEECH LEAF WITH RELIANT ® SYSTEMIC FUNGICIDE - OR - DRY PHITE GRANULE SLOW RELEASE Pre-treat suceptible trees to increase: Pathogen Resistance, Overall Plant Health + Vigor Treat infected trees to increase: Immune System Response of Phytoalexins, Acid Protective Enzyme Production/ Creation of Necrotic Blocking Cells Lignifcation of Cell Walls

RELIANT® helps to activate the tree’s immune system to generate Phytoalexin responses to a pathogen attack.

This response profoundly impacts the tree’s ability to ward off and compartmentalize the attacking pathogen. In doing so, the tree responds by minimizing the pathogen’s effects.

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