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.

133 Results

List Grid

Weed Life Cycles
Weed Life Cycles - Videos Videos

Weed Life Cycles

Bill Riden

7:46

Learn the life cycle of weeds. More
Managing Invasive Plants
Managing Invasive Plants - Workshops Workshops

Managing Invasive Plants

07/19/2018

Horsham, PA

$70.00
This workshop will provide participants with the knowledge and skills to properly identify invasive plants and develop strategies for treatment and control. 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
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
Noxious Weed - Catsear
Noxious Weed - Catsear - Articles Articles
Catsear (Hypochaeris radicata or Hypochoeris radicata), also known as flatweed, cat's ear or false dandelion, is a perennial, low-lying herb often found in lawn. 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
Ruth Benner, Penn State University
Weed Identification Walk - Workshops Workshops

Weed Identification Walk

07/25/2018

Erie, PA

$15.00
Join us for a hands-on, interactive session to learn about identifying and managing a variety of broadleaf and grassy weeds in both turf and landscape situations. 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
Keeping greenhouses free of weeds helps control diseases and insect pests.
Zero Tolerance for Weeds in the Greenhouse - Articles Articles
"Don't let weeds grow in the greenhouse." Growers know it, customers sense it, and Extension educators preach it. But is zero tolerance for weeds attainable? 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
Veronicastrum virginicum - culver's root
Weeds in the Fields - Articles Articles

Weeds in the Fields

Mary Ann Ryan

When driving, we often see flowering weeds in fields or roadsides. Casual walks along a country road may cause us to stop and check out the weeds of summer. 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
Joseph LaForest, University of Georgia, Bugwood.org
Juniper Scale - Articles Articles
The juniper scale, native to Europe, is now found throughout the United States. This key pest attacks junipers, cypresses, falsecypress, and incense cedar in landscapes and nurseries. More
What's That!
What's That! - Articles Articles

What's That!

Ed Rajotte, Ph.D.

Properly identifying the organism is the first step of integrated pest management (IPM). More
Weed Ecology, Biology, and Identification
Weed Ecology, Biology, and Identification - Articles Articles
Understanding weed ecology can help in designing management systems to minimize their impact. More
Purple Loosestrife in Pennsylvania
Purple Loosestrife in Pennsylvania - Articles Articles
Purple Loosestrife is an aggressive plant that is invading our wetlands and replacing valuable wetland plants; eliminating food and shelter for wildlife; and choking waterways. More
Purple Loosestrife
Purple Loosestrife - Videos Videos
Part 2, 6 minutes. More
Invasive Species
Invasive Species - Articles Articles
The United States is under constant threat of exotic species invading our shores. More
Introduction to Weeds: What are Weeds and Why do we Care?
Introduction to Weeds: What are Weeds and Why do we Care? - Articles Articles
No matter what definition is used, weeds are plants whose undesirable qualities outweigh their good points. More
Alton N. Sparks, Jr., University of Georgia, Bugwood.org
Integrated Pest Management (IPM) Tactics - Articles Articles
The goal of using multiple tactics or "many small hammers" is to effectively suppress pests below injurious levels and avoiding outbreaks. More
Greenhouse IPM
Greenhouse IPM - Articles Articles
PA IPM has devoted a great deal of effort to designing IPM solutions for greenhouse production, particularly biological control. More
Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5