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2017 Penn State Agronomy Herbicide Trial Report
2017 Penn State Agronomy Herbicide Trial Report - Articles Articles
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
Palmer Noxious Weed by PSU
Noxious Weed Act Signed Into Law on October 30, 2017 - Articles 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
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
Cover Crop Interseeder: Potential for Injury from Corn Herbicides
Cover Crop Interseeder: Potential for Injury from Corn Herbicides - Articles Articles
Recent trials show that several shorter-lived residual corn herbicides can be used successfully with interseeded cover crops. More
Interseeded clover during midsummer under the corn canopy
Cover Crop Interseeder: Impacts on Corn Yield - Articles 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
Planting corn in an interseeded corn stubble field.
Cover Crop Interseeder: Improving the Success in Corn - Articles Articles

Cover Crop Interseeder: Improving the Success in Corn

Gregory W. Roth, Ph.D., William S. Curran, 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
Lambsquarters (Chenopodium album)
Management of Triazine-Resistant Pigweed and Lambsquarters - Articles Articles
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
Johnsongrass (Sorghum halepense)
Johnsongrass and Shattercane Control: An Integrated Approach - Articles 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
Controlling Yellow Nutsedge in Agronomic Crops (An Integrated Approach)
Controlling Yellow Nutsedge in Agronomic Crops (An Integrated Approach) - Articles 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
Wirestem Muhly Management in Agronomic Crops
Wirestem Muhly Management in Agronomic Crops - Articles 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
Waterhemp in soybeans
2016 Penn State Agronomy Herbicide Trial Report - Articles Articles
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
Horseweed in soybean
2015 Penn State Agronomy Herbicide Trial Report - Articles Articles
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
Quackgrass Management: An Integrated Approach
Quackgrass Management: An Integrated Approach - Articles 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
Watch Out for 2,4-D Drift Injury to Off-Target Crops
Watch Out for 2,4-D Drift Injury to Off-Target Crops - Articles 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
Figure 1. The Penn State Cover Crop Interseeder and Applicator. (Photo: Greg Roth)
Cover Crop Interseeder and Applicator - Articles Articles

Cover Crop Interseeder and Applicator

Gregory W. Roth, Ph.D., Sjoerd Willem Duiker, Ph.D., CCA, William S. Curran, Ph.D.

The Penn State Cover Crop Interseeder and Applicator was designed to help establish cover crops in areas where cover crop establishment is not that feasible because of a late harvest and short season. More
Photo of horseweed taken in early November. Curran, Penn State
How Late Can I Control Weeds in the Fall? - Articles 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
Red clover can be used as a cover crop to suppress weeds
Suppressing Weeds Using Cover Crops in Pennsylvania - Articles Articles
This article discusses which cover crops are most suitable, and how should they be managed to enhance weed suppression. More
Weed Management in Pasture Systems
Weed Management in Pasture Systems - Articles Articles

Weed Management in Pasture Systems

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

Weeds can replace desirable grass species, filling in gaps or voids and reducing yield and overall quality of pasture and forages. More
Carey Minteer, University of Arkansas, Bugwood.org
Orchardgrass Burndown and Forage Weeds - Articles Articles

Orchardgrass Burndown and Forage Weeds

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

Spring termination of a sod such as orchardgrass can have mixed results, follow these steps for successful sod burndown. More
Weed Management in Organic Cropping Systems
Weed Management in Organic Cropping Systems - Articles Articles
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
Managing Weeds in CREP Grasslands
Managing Weeds in CREP Grasslands - Articles 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
Weed Management in CREP Grasslands
Weed Management in CREP Grasslands - Articles 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
Persistence of Herbicides in Soil
Persistence of Herbicides in Soil - Articles 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
Anthony LeBude, NC State University, Bugwood.org
Special Cover Crop Control Considerations - Articles Articles

Special Cover Crop Control Considerations

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

Most cover crops are fairly easy to control in a burndown program as long as you pay attention to detail. More
Six of One, Half Dozen of the Other: the Future of Weed Management?
Six of One, Half Dozen of the Other: the Future of Weed Management? - Articles Articles
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
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