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Crops > Weeds and Weed Control

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Herbicide options for Palmer amaranth in CRP
Research is ongoing regarding herbicide control methods for Palmer amaranth. The Farm Service Agency is working to approve broadcast herbicide applications to be used in CRP land. This publication dis
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Weed Science Program 2016 Weed Control Results
The 2016 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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2017 Herbicide Guide for Iowa Corn and Soybean Production
This publication provides information on product and management updates, the role of preemergence herbicides in glyphosate resistant crops, corn and soybean herbicide effectiveness ratings, herbicide
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Palmer amaranth identification
Palmer amaranth has been identified both in crop fields and in conservation plantings using native seed mixes. Early detection is essential in order to prevent the new weed from getting permanently e
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Herbicide use may restrict grazing options for cover crops
Interest in cover crops has dramatically increased due to their many potential benefits. In addition to conservation purposes, cover crops can provide forage for livestock producers. It is important f
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Weed Science Program 2015 Weed Control Results
The 2015 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Crop Production Clipboard
Crop production clipboards provide a handy way to keep key reference information with you in the office helping customers or scouting in corn and soybean fields. Calibration and conversions supplement
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Weed Identification Field Guide 2nd Edition (Unit=44)
The Weed Identification Field Guide, 2nd Edition, is a revised and expanded pocket-sized guide (3-3/4" x 6") for farmers and agronomists to use for weed identification in Iowa corn and soybe
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Conservation Techniques for Vegetable Production: Combining Strip-Tillage and Cover Crops
Strip-tillage is when a crop is planted into narrow, tilled strips and the non-tilled area between the strips might contain residue from the previous season's main crop or a living or dead cover crop.
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Weed Science Program 2014 Weed Control Results
The 2014 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weed Science Program 2013 Weed Control Results
The 2013 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weed Science Program 2012 Weed Control Results
The 2012 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weed Science Program 2011 Weed Control Results
The 2011 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weed Science Program 2010 Weed Control Results
The 2010 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Herbicide Mode of Action
Understanding how herbicides work provides insight into how to use the chemicals and helps diagnose performance problems and related injury symptoms.
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Weed Identification Field Guide 2nd Edition
The Weed Identification Field Guide, 2nd Edition, is a revised and expanded pocket-sized guide (3-3/4" x 6") for farmers and agronomists to use for weed identification in Iowa corn and soybe
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Weed Science Program 2009 Weed Control Results
The 2009 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Aquatic Plant Management -- Managing Iowa Fisheries
Discover biological, chemical and integrated management methods to control aquatic weeds.
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Reducing Weed Pressure in Ridge-Till - Sustainable Agriculture
Summarizes techniques for successful management of weeds in ridge-till cultivation using mechanical and cultural controls.
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Weed Science Program 2008 Weed Control Results
The 2008 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Relative Emergence Sequence for Weeds of Corn and Soybeans -- Sustainable Agriculture
Provides information on weed development that can help growers determine the optimum time for tillage and crop planting to reduce weed populations.
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Weed Science Program 2007 Weed Control Results
The 2007 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weed Science Program 2006 Weed Control Results
The 2006 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weed Science Program 2005 Weed Control Results
The 2005 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Legume Living Mulches in Corn and Soybean
These mulches not only provide erosion control, but also fix atmospheric nitrogen. Learn more about five possibiities and their management.
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Small Grain Cover Crops for Corn and Soybean
Learn about species selection, management, and pros and cons of these cover crops.
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Weed Science Program 2004 Weed Control Results
The 2004 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weed Science Program 2003 Weed Control Results
The 2003 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Weeds to Watch -- New Weed Threats for Corn and Soybean Fields
Use the colorful pictures and descriptive information found on this poster to identify weed threats for corn and soybean fields.
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Weed Management for Organic Farmers
Organic farmers use a wide variety of tools and strategies to control weeds without synthetic chemicals. Those tools and strategies and their effects on soil quality are discussed.
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Protecting Iowa's Rare and Endangered Plants
Find out how to protect Iowa's five endangered and threatened plants from herbicide damage.
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Weed Science Program 2002 Weed Control Results
The 2002 Weed Control Results for the Iowa State University Weed Science Program report includes experiments and demonstrations conducted at several of the Iowa State University Research Farms and oth
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Vine Weeds of the North Central States
There are eleven major vine weeds that are troublesome on cropland in the North Central Region of the United States. Each weed is described and illustrated in this publication, and control measures a
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Poison Ivy
Poison ivy is responsible for more than 2 million cases of skin poisoning each year. Learn more about how to identify, avoid, and control poison ivy.
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Smilax or Carrion Flower
This publication describes this native prairie and semi-timbered woodland plant and how control is unnecessary.
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Weed Emergence Sequences: Knowledge to Guide Scouting and Control flyer
This flyer provides information on when weeds begin to emerge in order to help determine the appropriate time to scout fields and implement control tactics.
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Identification of the Weedy Pigweeds and Waterhemps of Iowa
Pigweeds present many weed management challenges for crop production. This publication provides producers with information necessary to identify and manage pigweeds common to Iowa.
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Reducing Herbicide Rates for Narrow-Row Soybeans
Reducing herbicide rates to take advantage of narrow-row soybeans’ earlier canopy may be a viable option for growers. See how using less than the recommended rates of herbicides with narrow-row soyb
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Cultivation: An Effective Weed Management Tool
Common questions are answered about relying on cutivation for interrow weed control. Other weed management factors also are addressed, such as time, weather conditions, erosion control, and cost.
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Multiflora Rose and Its Control
Multiflora rose is designated as a noxious weed in many states, and is a serious problem in some Iowa pastures and other untilled areas. This publication includes a detailed description of its appeara
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Pokeweed
This publication includes an in-depth description of pokeweed, including means for control.
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