The Minnesota Department of Agriculture (MDA) is asking for your help in tracking down Palmer amaranth. Palmer amaranth is an invasive weed that has the potential to do great damage in Minnesota and cost the state’s farmers millions of dollars.
The weed was first found in Minnesota in 2016 in conservation plantings. Since then, the MDA has identified it in several row crop fields. Palmer amaranth got into those fields through manure. It’s been determined that animals had been fed screenings containing the weed seed.
What do we mean by the word “screenings”?
Screenings are the byproducts of seed processing and are obtained through the cleaning of grains. Screenings are commonly sold and used as animal feed, roughage, and bedding, and they can consist of many kinds of grain byproducts.
Types of screenings that are used may include:
• Grain screenings: contain 70% or more grains (corn, barley, oats, rice, sorghum, wheat).
• Cereals and mixed grain screenings.
• Chaff and/or dust screenings: material that is separated from grain or seeds during the cleaning process, and may include hulls, joints, straw, dust, sweepings, sand, dirt, grain, and seeds.
Because screenings are mostly unregulated, often moved across the U.S., and may contain noxious weed seeds, it is important that officials get a better understanding of the use, types, and origin of screenings.
Please help reduce the risk of Palmer amaranth and other noxious weeds entering Minnesota by filling out this voluntary survey.
If Palmer amaranth were to become established in the state, it would cause substantial yield losses and greatly increase weed management costs in soybeans and corn.
To take the survey, go to
If you have questions about Palmer amaranth or this survey, please contact Mike -Merriman at the Minnesota Department of Agriculture at michael.
firstname.lastname@example.org or (651) 201-6386.