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Mature marestail plant in Rock Springs, PA
Marestail (Horseweed) Management - Articles Articles

Marestail (Horseweed) Management

Dwight Lingenfelter, Annie Klodd, William S. Curran, Ph.D.

Effective management of marestail (horseweed) involves a combination of herbicide, mechanical, and cultural tactics. More
The ground cover in an orchard must be managed just as the tree canopy is managed. The orchard floor can be divided into two distinct areas: the area between the tree rows, and the area directly underneath the trees.
Orchard Establishment - Row Middle and Tree Row - Articles Articles
The orchard floor can be divided into two distinct areas: the area between the tree rows (generally planted with a permanent cover crop), and the area directly underneath the trees. More
Orchard Weed Control - Weed Monitoring and Integrated Management
Orchard Weed Control - Weed Monitoring and Integrated Management - Articles Articles
Knowing the weed species present and the extent of the spread can provide you with valuable insight on possible control strategies. More
Marestail (horseweed) in Rock Springs, PA (Annie Klodd)
Managing Herbicide Resistant Marestail (horseweed) - Videos Videos
Best management practices for resistant marestail (horseweed) More
Herbicide Resistant Marestail (horseweed) in Pennsylvania
Herbicide Resistant Marestail (horseweed) in Pennsylvania - Videos Videos
Marestail (horseweed) resistant to glyphosate and Group 2 herbicides is present in PA and presents management challenges. More
Horseweed. Photo: Bill Curran, Penn State
Horseweed—a Winter and Summer Annual - Articles Articles
Horseweed (Conyza canadensis) also known as marestail, reproduces by seeds. More
Ideas On Herbicide Resistance Shared At Regional Meeting Ideas On Herbicide Resistance Shared At Regional Meeting - News
A productive discussion was had in Lancaster on the challenges, successes, and needs going forward for managing herbicide resistant weeds in the mid-Atlantic. More
Horseweed/Marestail Management in No-till Soybeans
Horseweed/Marestail Management in No-till Soybeans - Articles Articles

Horseweed/Marestail Management in No-till Soybeans

Dwight Lingenfelter, William S. Curran, Ph.D.

Glyphosate resistant horseweed was limited to the southeastern PA down into the Delmarva and in OH, but now it is much more common in central PA and has appeared in western PA as well. More
Horseweed/Marestail in winter wheat can create problems for double-crop soybeans (image by Chris Drake, Virginia Cooperative Extension).
Horseweed/Marestail Control in Double-Crop Soybean - Articles Articles

Horseweed/Marestail Control in Double-Crop Soybean

Dwight Lingenfelter, William S. Curran, Ph.D.

Horseweed or marestail control can be challenging in double crop soybeans. Horseweed plants can be large and/or they have been cutoff with the combine, making them more challenging to control. More