Articles
Articles
Articles Fall Weed Control in Wheat and Barley
Dwight Lingenfelter, William S. Curran, Ph.D.
As fall weeds compete with wheat and barley establishment, below are some herbicide options to consider. More
Articles Livestock Producers Should Recognize and Manage Poison Hemlock
Dwight Lingenfelter, William S. Curran, Ph.D.
“This is the time of year when you start to notice poison hemlock. Best management practices should take place before it flowers, produces more seed, and continues to spread”. More
Articles 2017 Penn State Agronomy Herbicide Trial Report
William S. Curran, Ph.D.
This weed field trials report is a summary of the 2017 herbicide trials conducted in corn soybean, and other field crops by the Department of Plant Science at Penn State. More
Articles Noxious Weed Act Signed Into Law on October 30, 2017
Dwight Lingenfelter, William S. Curran, Ph.D., Annie Klodd
The new Pennsylvania Controlled Plant and Noxious Weed Act will help protect your farm or property from some newer invasive noxious weeds. More
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
Articles Cover Crop Interseeder: Potential for Injury from Corn Herbicides
William S. Curran, Ph.D.
Recent trials show that several shorter-lived residual corn herbicides can be used successfully with interseeded cover crops. More
Articles Cover Crop Interseeder: Impacts on Corn Yield
Gregory W. Roth, Ph.D., William S. Curran, Ph.D.
There is some concern about the impact of the cover crop on the corn. In most cases, though, we have observed that the corn is very competitive with the cover crop. More
Articles Cover Crop Interseeder: Improving the Success in Corn
William S. Curran, Ph.D., Gregory W. Roth, Ph.D.
Interseeding cover crops in corn is a promising management practice that could improve the adoption of cover crops where they have not been feasible before. More
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 Controlling Yellow Nutsedge in Agronomic Crops (An Integrated Approach)
Dwight Lingenfelter, William S. Curran, Ph.D.
Yellow nutsedge (Cyperus esculentus L.) is an aggressive perennial plant that is a problem weed in field crops throughout the United States. 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
Articles Watch Out for 2,4-D Drift Injury to Off-Target Crops
Dwight Lingenfelter, Annie Klodd, William S. Curran, Ph.D.
We have heard about claims of 2,4-D injury to commercial grapevines in Pennsylvania, potentially stemming from applications in nearby field crops. 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
Articles Herbicide Resistant Weeds in No-till Soybean- integrating cover crops
William S. Curran, Ph.D., John Wallace, Jess Bunchek
Recent research being conducted at Penn State is showing cover crops beneficial for suppression of problematic winter annual weeds. More
Articles Weed Control in Small Grain Stubble and Burndown Considerations
Dwight Lingenfelter, William S. Curran, Ph.D.
Now is the time to think about controlling summer annual weeds, prior to seed set, in certain cropping systems. More
Articles Problem Pasture Weeds
Dwight Lingenfelter, William S. Curran, Ph.D.
Tips for controlling thistles, multiflora rose, and other troublesome pasture weeds. 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 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
Articles Cover Crop Control Considerations
Dwight Lingenfelter, William S. Curran, Ph.D.
Looking for a herbicide recommendation to control your cover crop? More
Articles Burndown Herbicide Considerations
Dwight Lingenfelter, William S. Curran, Ph.D.
Air temperature before, during, and after application can influence control with burndown. More
Articles Weed Control in Wheat and Herbicide Carrier Selection
Dwight Lingenfelter, William S. Curran, Ph.D.
If winter annual weeds emerged with the small grain and are left unchecked, the potential impact on yield could be great. More