Penn State Extension

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Looking Back at Xtend Soybean and Changes for 2018
Looking Back at Xtend Soybean and Changes for 2018 - News News
Dicamba use in Xtend soybean will require special applicator training and additional use restrictions for 2018. 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
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
Palmer amaranth infestation in soybeans Photo credit: Bill Curran
Invasive Pigweeds Rising Above Soybean Canopies - News News
Now is the time to scout for Palmer amaranth and waterhemp and remove or destroy it to prevent seed production and spread. More
Test Your Herbicide Mode of Action Knowledge!
Test Your Herbicide Mode of Action Knowledge! - News News
Speaking of herbicides and weed resistance, test your knowledge of herbicide modes of action with the short 9-question quiz found below. More
Harrington Seed Destructor
Harrington Seed Destructor - Videos Videos

Harrington Seed Destructor

Annie Klodd

2:44

Penn State is involved in research on Harvest Weed Seed Control for herbicide resistant weeds. Here, the HSD is described as it operates during harvest. More
Soybean showing cupped and crinkled leaves on July 17 at our Rock Springs Agronomy Farm.
Is Herbicide Drift Coming to the Mid-Atlantic? - News News
Concerns for plant growth regulator off-target crop injury are on the rise. What will we experience here in the Mid-Atlantic this summer? 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
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
Palmer amaranth (Amaranthus palmeri)
Noxious Weed Act Introduced to Both the PA House and Senate - News News
A Bill introducing the Controlled Plant and Noxious Weed Act has been introduced to both the House and Senate. 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
Clean the Combine to Stop Spread of Herbicide Resistant Weeds
Clean the Combine to Stop Spread of Herbicide Resistant Weeds - Articles Articles
Thorough cleaning and knowledge of the combine’s prior use can prevent the introduction of new herbicide-resistant weeds to your fields. More
Infected boxwood branch shows typical leaf spots and lesions
Boxwood Blight: Emerging Threat to Pennsylvania's Landscape - Articles Articles
This article provides information about boxwood blight, including symptoms, management, and what to do if you suspect boxwood blight infection on your trees. 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