Weed Management

Information on weed management and control of cover crops, including herbicides and pesticides. Tips on rotating cover crops and pesticide drift.

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Upcoming Events for June 27th
Upcoming Events for June 27th - News News

Upcoming Events for June 27th

06/27/2018

Field Day Announcement: Penn State Hemp Research Field Day, Southeast Research and Extension Center, August 7, 2018 More
Weed Life Cycles
Weed Life Cycles - Videos Videos

Weed Life Cycles

Bill Riden

7:46

Learn the life cycle of weeds. More
Photo Credit: Zachary Larson, Penn State Extension
Planting Green Impacts on Corn Emergence - Articles Articles
Corn planted into standing un-rolled cover may show reduced yields due to lower populations and greater plant height variability. More
Rye cover crop in early November. Photo credit: W.S. Curran.
Soybean Herbicides and Rotation to Cover Crops - News News
Consider the soybean herbicide program you used in 2017 before you plant a fall cover crop. Most small grains are fine but legumes and radish can be problematic. 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
Italian ryegrass infestation in winter wheat. Photo compliments of Virginia Tech.
Soil residual herbicides for small grains. - News News
As you prepare to sow winter barley and/or wheat, several residual herbicides maybe be helpful for control of problematic annual grasses or broadleaves. More
Beautiful oat cover crop in late fall. Photo credit W.S. Curran.
Corn Herbicides and Rotation to Cover Crops - News News
Consider the corn herbicide program you used in 2017 before you plant a fall cover crop. Most small grains are fine, but legumes and radish can be problematic. 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
A crowd gathers at a farm in Clinton County to discuss opportunities for managing soil health and planting green.
Planting Green and Soil Health the Focus of June Field Day - News News
Planting green is a practice where cover crop termination is delayed until cash crop planting in order to extend soil health benefits longer into the season. More
Pennsylvania Certified Crop Adviser Study Guide
Pennsylvania Certified Crop Adviser Study Guide - Online Courses Online Courses
$99.00
Study soil and water, and crop, pest, and nutrient management, the agronomy areas you are required to know for the Pennsylvania Certified Crop Adviser exam. More
Newly emerged pigweeds in Berks Co., June 13, 2017 (Photo: Annie Klodd, Penn State)
Palmer Amaranth and Waterhemp Beginning to Emerge - News News
Palmer amaranth and waterhemp have emerged for the season in Pennsylvania. It is important to scout for these invasive weeds now, and control them before they reach 4 inches tall. More
Timothy field near Gettysburg browning because of aphid infestation. (Photo by Dean Collamer, Growmark FS
Aphids in Timothy Fields - News News

Aphids in Timothy Fields

04/26/2017

Have you seen browning in timothy fields? It may be due to a heavy aphid population. More
Evaluation of Residual Herbicides for Interseeding in Corn
Evaluation of Residual Herbicides for Interseeding in Corn - News News
Trials conducted over three years show that several shorter-lived residual corn herbicides can be used successfully with interseeded cover crops. More
Introduction to Weeds and Herbicides
Introduction to Weeds and Herbicides - Articles Articles
Weeds are plants whose undesirable qualities outweigh their good points. 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
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
Rob the Bank
Rob the Bank - Articles Articles

Rob the Bank

Scott Guiser

Weed seed-bank, that is. Right now, across Pennsylvania, huge deposits of weed seed are being accepted by soil. Stop it now and this will pay dividends later. More
Photo credit: D. Paashaus
Creating a Weed Management Plan for Your Organic Farm - Articles Articles
Successful weed management can make or break a new organic farm. These steps will help you get the upper hand on weeds. More
Integrated Approach- Management of Eastern Black Nightshade
Integrated Approach- Management of Eastern Black Nightshade - Articles 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
Invasive Pigweeds: Palmer Amaranth and Waterhemp
Invasive Pigweeds: Palmer Amaranth and Waterhemp - Articles 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
Herbicide Resistant Weeds in No-till Soybean- integrating cover crops Herbicide Resistant Weeds in No-till Soybean- integrating cover crops - 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
John D. Byrd, Mississippi State University, Bugwood.org
Cover Crop Control Considerations - Articles Articles

Cover Crop Control Considerations

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

Looking for a herbicide recommendation to control your cover crop? More
John D. Byrd, Mississippi State University, Bugwood.org
Burndown Herbicide Considerations - Articles Articles

Burndown Herbicide Considerations

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

Air temperature before, during, and after application can influence control with burndown. More
Beat the Weeds! Sacrifice Lots Need to Be Reseeded Too!
Beat the Weeds! Sacrifice Lots Need to Be Reseeded Too! - Articles Articles
Sacrifice lots can be seeded to annuals for quick growth and cover or seeded into perennials if the sacrifice lot can be rotated each year. More
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