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Drone herbicide applications prove effective for common reed control

A recent WSSA research article shows drones offer a practical option to thwart invasive weed species, and the potential to accelerate ecological recovery in wetland habitats

2025-07-10
(Press-News.org) WESTMINSTER, Colorado – 10 July 2025 – New research from the University of Waterloo shows that a single, targeted herbicide application from a Remotely Piloted Aircraft System (RPAS) can suppress common reed invasions with more than 99% effectiveness. This result is among many research findings recently published online in Invasive Plant Science and Management (IPSM), volume 18, 2025, by Cambridge University Press, a Weed Science Society of America (WSSA) research journal.

“The 99% reduction in live common reed stems observed with RPAS-based herbicide application demonstrates its capacity to suppress invasive common reed effectively,” says Rebecca Rooney, Ph.D., an associate biology professor at the University of Waterloo, Waterloo, Canada, and the study’s lead author. “This method matched or exceeded the efficacy of conventional helicopter and backpack applications.”

Managing the invasive common reed with herbicides in wetlands can pose significant challenges for land managers, often due to either limited or difficult access to the weeds via foot or with ground spray equipment. Using ground access with heavy equipment can potentially trample wildlife and desirable vegetation. RPAS technology provides more convenient access to spraying the weeds than with ground-control methods, with less risk of trampling or disturbance.

RPAS application also allows smaller spray widths and lower flight heights compared to helicopters, with reduced off-target impacts and lower risk of drift. “It’s important to avoid the potential for herbicide drift and any collateral damage to native vegetation, which is especially valuable in ecologically sensitive wetlands,” says Rooney. “The precision from RPAS applications may help land managers to minimize off-target herbicide exposure, reducing impacts to surrounding vegetation and improving conditions for native plant recovery.”

While the study’s researchers observed short-term declines in plant diversity from the RPAS applications, they also noted that early evidence suggests some native species recolonized in treated areas within a year. “These findings indicate that RPAS technologies can offer a safe and scalable alternative for invasive species control,” says Rooney. “This approach also holds promise for accelerating ecological recovery in wetland habitats. Future research should focus on long-term native vegetation recovery and quantify the accuracy of RPAS-based herbicide applications to minimize off-target damage to native vegetation in wetlands.”

More information about this study is available in the IPSM journal article, “Suppression efficacy of remotely piloted aircraft systems–based herbicide application on invasive Phragmites australis in wetlands.” IPSM is the official publication of the Weed Science Society of America.

 

About Invasive Plant Science and Management

Invasive Plant Science and Management is a journal of the Weed Science Society of America, a nonprofit scientific society focused on weeds and their impact on the environment. The publication presents peer-reviewed original research related to all aspects of weed science, including the biology, ecology, physiology, management and control of weeds. To learn more, visit www.wssa.net.

 

Media Contact:                                             

Antonio DiTommaso, Ph.D.

Editor - Invasive Plant Science and Management

ad97@cornell.edu, (607) 254-4702

END



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[Press-News.org] Drone herbicide applications prove effective for common reed control
A recent WSSA research article shows drones offer a practical option to thwart invasive weed species, and the potential to accelerate ecological recovery in wetland habitats