Weed Identification and Control
Weed Identification and Control
Information on weed identification and control, including catsear, marestail, purple loosestrife, pokeweed, pigweed, poison ivy, crabgrass, hemlock, purslane and multiflora rose. Tips on various herbicides and integrated pest management.
Articles Management of Triazine-Resistant Pigweed and Lambsquarters
William S. Curran, Ph.D.
Since the discovery of triazine resistance in the United States occurred in the late 1960s, more than 50 species of weeds have developed weed resistance problems. More
Articles Johnsongrass and Shattercane Control: An Integrated Approach
Dwight Lingenfelter, William S. Curran, Ph.D.
Johnsongrass and shattercane are closely related grass weeds that are troublesome and persistent in row crops, where they reduce yield and quality. More
Articles Wirestem Muhly Management in Agronomic Crops
Dwight Lingenfelter, William S. Curran, Ph.D.
Wirestem muhly (Muhlenbergia frondosa) is a perennial grass species that can be problematic in conservation tillage production systems throughout Pennsylvania and the Northeast. More
Articles 2016 Penn State Agronomy Herbicide Trial Report
William S. Curran, Ph.D.
This weed field trials report is a summary of the 2016 herbicide trials conducted in corn soybean, and other field crops by the Department of Plant Science at Penn State. More
Articles 2015 Penn State Agronomy Herbicide Trial Report
William S. Curran, Ph.D.
This weed field trials report is a summary of the 2015 herbicide trials conducted in corn soybean, and other field crops by the Department of Plant Science at Penn State. More
Articles Quackgrass Management: An Integrated Approach
Dwight Lingenfelter, William S. Curran, Ph.D.
Quackgrass is a widespread, persistent, cool-season, grassy weed found in Pennsylvania row and forage crops. This competitive perennial grass can reduce crop yields up to 95 percent. More
Videos 
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
Articles Options for Chemical Control of Moss in Putting Greens
Peter Landschoot, Ph.D., Joshua Cook
Silvery thread moss (Bryum argenteum) in putting greens is becoming an all-too-common occurrence on Pennsylvania golf courses. More
Articles How Late Can I Control Weeds in the Fall?
Dwight Lingenfelter, William S. Curran, Ph.D.
How late can an herbicide application be made in the fall and still be effective? We provide comments about controlling perennials and winter annual weeds. More
Guides and Publications Mid-Atlantic Field Crop Weed Management Guide
Dwight Lingenfelter, William S. Curran, Ph.D.
258
From: $15.00
To: $35.00
Get strategies and peruse herbicide tables for managing weeds in corn, sorghum, soybeans, small grains, legumes, grass forages, and pastures. More
Articles Pigweed Seedling Identification
Dwight Lingenfelter, William S. Curran, Ph.D.
This is the time of year to try to correctly identify and manage problematic pigweeds in your fields. More
Articles Six of One, Half Dozen of the Other: the Future of Weed Management?
Clair Keene, William S. Curran, Ph.D.
Whether you grow cotton in the Delta of Mississippi, soybean in IN, or corn in PA, chances are good that there are herbicide resistant weeds near or on your farm. More
Articles Managing Weeds in CREP Grasslands
Dwight Lingenfelter, William S. Curran, Ph.D.
It's time to think about managing those weedy plants in CREP before they set seed. More
Articles Keep an Eye Out for the Ragweeds
Dwight Lingenfelter, William S. Curran, Ph.D.
Members of the Aster family, particularly the ragweeds, are never good neighbors and it’s key to understand what your post treatment options are. More
Articles Suppression of Annual Bluegrass or Crabgrass
Tanner Delvalle, Peter Landschoot, Ph.D., Jeff Borger, M.S.
Seedbed establishment for fine turf can be extremely difficult, and is often considered an art form. More
Articles Invasive Pigweeds: Palmer Amaranth and Waterhemp
William S. Curran, Ph.D., Annie Klodd
Palmer amaranth is a species of pigweed that was recently introduced into PA and has been positively identified on more than 30 sites across the state. More
Articles Weed Management in CREP Grasslands
Dwight Lingenfelter, William S. Curran, Ph.D.
This publication will discuss weed management options for Conservation Reserve Enhancement Program (CREP) grassland acres enrolled in Conservation Practices CP1, CP2, and CP10. More
Articles Weed Management in Turf
Peter Landschoot, Ph.D.
Weeds are undesirable because they disrupt turf uniformity and compete with desirable grass species for moisture, light, and nutrients. More
Articles Weed Management in Organic Cropping Systems
William S. Curran, Ph.D.
When managing weeds in organic systems, producers use many of the same techniques used in conventional systems, but they rely much more on nonchemical control strategies. More
Articles Persistence of Herbicides in Soil
William S. Curran, Ph.D.
While it is desirable for the chemicals to control weeds during the season of application, it is not desirable for them to persist and affect subsequent crop growth. More
Articles Integrated Approach- Management of Eastern Black Nightshade
Dwight Lingenfelter, William S. Curran, Ph.D.
Eastern black nightshade (Solanum ptycanthum Dun.), an annual broadleaf plant, is an increasing weed problem in northeastern field crop production. More
Articles Multiflora Rose Management in Grass Pastures (An Integrated Approach)
Dwight Lingenfelter, William S. Curran, Ph.D.
The weed multiflora rose (Rosa multiflora, Thunb.) is an increasing problem in Pennsylvania pastures and noncropland. It thrives on idle land, fencerows, and minimally maintained, hilly pastures. More