Research shows most bird feed contains troublesome weed seeds

March 20, 2020

WESTMINSTER, Colorado - MARCH 20, 2020 - Many millions of homeowners use feeders to attract birds. But a two-year study featured in the journal Invasive Plant Science and Management suggests there may be one unintended consequence to this popular hobby. Bird feed mixtures may be helping to spread troublesome weeds that threaten agricultural crops.

When researchers examined the contents of 98 commercially available bird feed mixes, they uncovered several significant findings:The researchers also explored which harvested bird feed ingredients contributed most to weed seed contamination. They found that proso millet grain was closely linked to the presence of pigweed species weeds, while safflower and sunflower contributed most to the presence of kochia and common ragweed, respectively.

"While it is difficult to estimate the precise role commercial bird feed plays, there is a distinct possibility it may be an overlooked pathway for spreading troublesome weed species into new regions," says Eric Oseland of the University of Missouri.

To mitigate the risks, researchers recommend careful weed management in crop fields designated for bird feed, as well as the use of sieving during packaging to reduce weed seed contamination. They also point to the proven effectiveness of regulatory measures adopted in Europe to limit weed seed content in bird feed.
-end-
The article "Examination of commercially available bird feed for weed seed contaminants" is available at https://www.cambridge.org/core/journals/invasive-plant-science-and-management/article/examination-of-commerciallyavailable-bird-feed-for-weed-seed-contaminants/913AB80F0AE7F5EFA2DDFEB778432091

About Invasive Plant Science and Management

Invasive Plant Science and Management is a journal of the Weed Science Society of America, a nonprofit scientific society focused on weeds and their impact on the environment. The publication focuses on invasive plant species. To learn more, visit http://www.wssa.net.

Cambridge University Press

Related Agriculture Articles from Brightsurf:

Post-pandemic brave new world of agriculture
Recent events have shown how vulnerable the meat processing industry is to COVID-19.

Agriculture - a climate villain? Maybe not!
The UN's Intergovernmental Panel on Climate Change (IPCC) claims that agriculture is one of the main sources of greenhouse gases, and is thus by many observers considered as a climate villain.

Digital agriculture paves the road to agricultural sustainability
In a study published in Nature Sustainability, researchers outline how to develop a more sustainable land management system through data collection and stakeholder buy-in.

Comparisons of organic and conventional agriculture need to be better, say researchers
The environmental effects of agriculture and food are hotly debated.

EU agriculture not viable for the future
The current reform proposals of the EU Commission on the Common Agricultural Policy (CAP) are unlikely to improve environmental protection, say researchers led by the German Centre for Integrative Biodiversity Research (iDiv), the Helmholtz Centre for Environmental Research (UFZ) and the University of Göttingen in the journal Science.

Global agriculture: Impending threats to biodiversity
A new study compares the effects of expansion vs. intensification of cropland use on global agricultural markets and biodiversity, and finds that the expansion strategy poses a particularly serious threat to biodiversity in the tropics.

A new vision for genomics in animal agriculture
Iowa State University animal scientists helped to form a blueprint to guide the next decade of animal genomics research.

New pathways for sustainable agriculture
Diversity beats monotony: a colourful patchwork of small, differently used plots can bring advantages to agriculture and nature.

The future of agriculture is computerized
Researchers at the MIT Media Lab Open Agriculture Initiative have used computer algorithms to determine the optimal growing conditions to improve basil plants' taste by maximizing the concentration of flavorful molecules known as volatile compounds.

When yesterday's agriculture feeds today's water pollution
Water quality is threatened by a long history of fertilizer use on land, Canadian scientists find.

Read More: Agriculture News and Agriculture Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.