Editing Weed control (section)

=== Biological methods ===
A biological weed control regiment can consist of [[Biological pest control|biological control agents]], [[bioherbicide]]s, use of grazing animals, and protection of natural predators.<ref>{{cite book|first1=Merrill A.|last1=Ross|first2=Carole A.|last2=Lembi|title=Applied Weed Science: Including the Ecology and Management of Invasive Plants|publisher=Prentice Hall|year=2008|page=123|isbn=978-0135028148}}</ref> Post-dispersal, weed seed predators, like ground beetles and small vertebrates, can substantially contribute to the weed regulation by removing weed seeds from the soil surface and thus reduce seed bank size. Several studies provided evidence for the role of invertebrates to the biological control of weeds<ref>{{Cite journal|last1=Westerman|first1=Paula R.|last2=Liebman|first2=Matt|last3=Menalled|first3=Fabián D.|last4=Heggenstaller|first4=Andrew H.|last5=Hartzler|first5=Robert G.|last6=Dixon|first6=Philip M.|date=June 2005|title=Are many little hammers effective? Velvetleaf (Abutilon theophrasti) population dynamics in two- and four-year crop rotation systems|journal=Weed Science|language=en|volume=53|issue=3|pages=382–392|doi=10.1614/WS-04-130R|s2cid=86362489 |issn=0043-1745}}</ref><ref>{{Cite journal|last=Bohan D.|display-authors=etal|date=2011|title=National-scale regulation of the weed seedbank by carabid predators.|journal=Journal of Applied Ecology|volume=48|issue=4|pages=888–898|doi=10.1111/j.1365-2664.2011.02008.x|bibcode=2011JApEc..48..888B }}</ref>

==== Animal grazing ====
{{main|Conservation grazing}}
Companies using goats to control and eradicate [[Euphorbia virgata|leafy spurge]], [[knapweed]], and other toxic weeds have sprouted across the [[American West]].<ref>{{cite news|url=http://www.brownalumnimagazine.com/content/view/3251/40/|title=American Pastoral|date=Sep–Oct 2012|publisher=Brown Alumni Monthly}}</ref>