Getting Rid Of Weeds
Through Integrated Weed Management
We are a publicly led network coordinating research and outreach, providing science-based information and decision support tools to make agriculture more sustainable and precise. We work to develop integrated weed management solutions that are practical and adoptable.
No Seeds. No Weeds.
For over 50 years, herbicides have been a highly effective method to control weeds and protect crop yields. Herbicides have supported the wide-spread use of no-till and limited cultivation for weed control, improving soil health. However, over reliance on a few key herbicides has caused the development of particularly problematic herbicide-resistant weeds.
For some farmers, herbicides alone just aren’t getting the job done anymore.
Integrated Weed Management (IWM) is the answer.
What is Integrated Weed Management?
Integrated weed management (IWM) combines various methods to reduce or eliminate the effect of weeds on crop production over time, using a combination of practices that are most effective for solving specific weed issues. Techniques include:
Recent IWM News
Using “Planting Green” to Help Manage Weeds
Planting green allows the cover crops to grow for an additional few weeks and allows them to produce more biomass. The...
Cover Crops
featured
Grow News
What is the Best Way to Terminate a Cover Crop?
Cover crop termination should be considered in advance when choosing a cover crop. Select a cover crop based on your cropping...
Cover Crops
featured
Grow News
GROW Members Learn How Australian Farmers Are Managing Weeds
Dr. Steven Mirsky, Research Ecologist at the USDA-ARS, MD, explains what GROW members learned regarding harvest weed seed control...
Cover Crops
Grow News
Harvest Weed Seed Control
Harvest Weed Seed Management
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Cotton Weed Management With a Cereal Rye Cover Crops
Weed management in cotton has become more challenging due to an increase in herbicide-resistant weeds, such as horseweed and...
Cover Crops
Grow News
Cover crops: Country-Wide Conclusions
Several coordinated field trials are being conducted across the US to examine the benefit of cover crops for weed management. No...
Cover Crops
Grow News
Cover Crops for Weed Suppression. Are They an Option for Texas Growers?
Texas A&M weed specialists are working hard to help farmers in Southeast Texas manage herbicide-resistant weeds using cover...
Cover Crops
Grow News
Would You Like to Suppress Weeds with Cover Crops? See what happens by terminating them at different dates
Cover crops can play a significant role in a multi-tactic approach to weed management. Dr. Norsworthy with the University of...
Cover Crops
Grow News
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Cover crop strategy for Weed Suppression=HIGH BIOMASS
Now is the time to think about planning your cover crops if you would like to “add” a different weed management...
Cover Crops
Grow News
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Managing Italian ryegrass in wheat with integrated weed management
At this point in the season, small grain farmers have won or lost the battle with Italian ryegrass. But all may not be lost....
featured
Grow News
Harvest Weed Seed Control
Row Spacing As A Weed Management Tool
Crop competition is key to good weed control, and a thick dense crop canopy will serve to suppress weeds for most of the growing...
featured
Grow News
Using “Planting Green” to Help Manage Weeds
Planting green allows the cover crops to grow for an additional few weeks and allows them to produce more biomass. The...
Cover Crops
featured
Grow News
Eric Westra, Colorado State Weed Specialist, Evaluates Weed Management Potential at Harvest
Dr. Eric Westra, Colorado State Weed Specialist, evaluates which Harvest Weed Seed Control tools could potentially be adopted by...
Grow News
Harvest Weed Seed Control
Uncategorized
Integrating Tactics For Johnsongrass Management in Grain Sorghum
Johnsongrass is a major problem in summer annual crops, especially in grain sorghum due to the lack of selective herbicide...
featured
Grow News
Harvest Weed Seed Control
Effective Site of Action and How it Should Be Used
When it comes to choosing the right herbicide, it might be useful and important to refresh how to use different and multiple...
featured
Grow News
What is the Best Way to Terminate a Cover Crop?
Cover crop termination should be considered in advance when choosing a cover crop. Select a cover crop based on your cropping...
Cover Crops
featured
Grow News
Does Strategic Tillage for Weed Control Make Sense in No-Till Cropping Systems?
Strategic tillage, as defined in a recent article from the University of Nebraska, is occasional tillage of long-term no-till,...
Grow News
Integrated Weed Management Innovations
Mechanical Weed Control
Lauren Lazaro, LSU AgCenter, sees the potential of Harvest Weed Seed Control in Louisiana
Dr. Lauren Lazaro, LSU AgCenter’s Weed Specialist, visited Australian farmers and learned how they are dealing with...
Grow News
Harvest Weed Seed Control
GROW Members Learn How Australian Farmers Are Managing Weeds
Dr. Steven Mirsky, Research Ecologist at the USDA-ARS, MD, explains what GROW members learned regarding harvest weed seed control...
Cover Crops
Grow News
Harvest Weed Seed Control
Harvest Weed Seed Management
Herbicide Resistant Weeds
Integrated Weed Management Innovations
How did Palmer amaranth and Waterhemp get in NC?
Depending on the species, weeds spread with the help of wind, water, or by other means. Additionally, people spread weeds with...
Grow News
Prevention
Cotton Weed Management With a Cereal Rye Cover Crops
Weed management in cotton has become more challenging due to an increase in herbicide-resistant weeds, such as horseweed and...
Cover Crops
Grow News
GROW Members Learn How Australian Farmers Are Managing Weeds
Dr. Steven Mirsky, Research Ecologist at the USDA-ARS, MD, explains what GROW members learned regarding harvest weed seed control...
Cover Crops
Grow News
Harvest Weed Seed Control
Harvest Weed Seed Management
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Would You Like to Suppress Weeds with Cover Crops? See what happens by terminating them at different dates
Cover crops can play a significant role in a multi-tactic approach to weed management. Dr. Norsworthy with the University of...
Cover Crops
Grow News
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Robotics: A New IWM Tool In The Pipeline
Scientists at the University of Illinois at Urbana-Champaign are working on research funded by the U.S. Department of Agriculture...
Grow News
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Harvest Time: Prevent Weed Seed Dispersal, A SIMPLE PLAN
Farmers are very busy during harvest time. Yet this is the final time to do something about the weeds in the field. If weeds and...
Grow News
Harvest Weed Seed Management
Herbicide Resistant Weeds
Integrated Weed Management Innovations
How to Interpret Herbicide Mode of Action?
Combating herbicide resistance requires combining herbicide modes of action. Re-posted from the Texas Row Crops Newsletter, July...
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Cover crop strategy for Weed Suppression=HIGH BIOMASS
Now is the time to think about planning your cover crops if you would like to “add” a different weed management...
Cover Crops
Grow News
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Cleaning Weed Seeds from a Combine – Video
Annie Klodd and Jeff Metz, Pennsylvania State University Equipment that enters a field with mature herbicide-resistant weeds will...
Grow News
Harvest Weed Seed Control
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Raising weeds for science – researchers study when weeds shed their seeds
Last week, we wrote an article on Harvest Weed Seed Control using the Harrington Seed Destructor (HSD). This effective machine...
Harvest Weed Seed Control
Herbicide Resistant Weeds
Herbicide rotation ineffective against resistance in waterhemp
Lauren Quinn, University of Illinois URBANA, Ill. – Farmers have been battling herbicide-resistant weeds for generations. A...
Herbicide Resistant Weeds
Weed of the Week: Giant Foxtail
Giant foxtail is a common summer annual grass in row crops and forages. It emerges for a long period in the spring. It typically...
Herbicide Resistant Weeds
Weed of the Week: Johnsongrass
Johnsongrass is a widespread perennial grass weed throughout the US, with herbicide resistant populations in the midwest, south,...
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Soybean Burndown – If you Haven’t Sprayed Yet, Good Luck
Some weeds, like horseweed/marestail, can be very hard to control in POST if they’re not controlled prior to planting. If...
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Managing Italian ryegrass in wheat with integrated weed management
At this point in the season, small grain farmers have won or lost the battle with Italian ryegrass. But all may not be lost....
featured
Grow News
Harvest Weed Seed Control
Eric Westra, Colorado State Weed Specialist, Evaluates Weed Management Potential at Harvest
Dr. Eric Westra, Colorado State Weed Specialist, evaluates which Harvest Weed Seed Control tools could potentially be adopted by...
Grow News
Harvest Weed Seed Control
Uncategorized
Integrating Tactics For Johnsongrass Management in Grain Sorghum
Johnsongrass is a major problem in summer annual crops, especially in grain sorghum due to the lack of selective herbicide...
featured
Grow News
Harvest Weed Seed Control
Lauren Lazaro, LSU AgCenter, sees the potential of Harvest Weed Seed Control in Louisiana
Dr. Lauren Lazaro, LSU AgCenter’s Weed Specialist, visited Australian farmers and learned how they are dealing with...
Grow News
Harvest Weed Seed Control
GROW Members Learn How Australian Farmers Are Managing Weeds
Dr. Steven Mirsky, Research Ecologist at the USDA-ARS, MD, explains what GROW members learned regarding harvest weed seed control...
Cover Crops
Grow News
Harvest Weed Seed Control
Harvest Weed Seed Management
Herbicide Resistant Weeds
Integrated Weed Management Innovations
A NEW Harvest Weed Seed Control Tool from Tecfarm
In December 2019, members of GROW visited Western Australia to learn first-hand about harvest weed seed control. Machinery...
Harvest Weed Seed Control
News From Other Sources
Harrington Seed Destructor Kills Nearly 100 Percent of US Agronomic Weed Seeds in Lab Study
https://phys.org/news/2020-01-harrington-seed-destructor-percent-agronomic.html By University of Illinois, Urbana-Champaign In...
Harvest Weed Seed Control
Harvest Weed Seed Management
Mechanical Weed Control
News From Other Sources
Managing Weed Seed Bank at Harvest
Over the past two years a new IWM tool has been tested at three locations in the US as part of the GROW-IWM project. ...
Grow News
Harvest Weed Seed Control
Integrated Weed Management Innovations
Cleaning Weed Seeds from a Combine – Video
Annie Klodd and Jeff Metz, Pennsylvania State University Equipment that enters a field with mature herbicide-resistant weeds will...
Grow News
Harvest Weed Seed Control
Herbicide Resistant Weeds
Integrated Weed Management Innovations
Raising weeds for science – researchers study when weeds shed their seeds
Last week, we wrote an article on Harvest Weed Seed Control using the Harrington Seed Destructor (HSD). This effective machine...
Harvest Weed Seed Control
Herbicide Resistant Weeds
Harrington Seed Destructor Field Day at University of Illinois
The Harrington Seed Destructor (HSD) is a new machine, invented by an Australian wheat farmer, for destroying weed seeds during...
Harvest Weed Seed Control
Integrated Weed Management Innovations
When the time comes to hand pull weeds
By Annie Klodd, Penn State Extension Prolific weeds like horseweed (marestail) and pigweeds are beginning to flower and will drop...
Harvest Weed Seed Control
Integrated Weed Management Innovations
In the Fields
What Are Your Problem Weeds?
Italian Ryegrass
Barnyardgrass
Johnsongrass
Redroot Pigweed
Smooth Pigweed
Giant Ragweed
Common Ragweed
Common Lambsquarters
Horseweed (marestail)
Kochia
Palmer Amaranth
Waterhemp
