title: United States Department of Agriculture-Agricultural Research Service research on pest biology: weeds.
abstract: Over 125 permanent full-time scientists conduct research within the USDA Agricultural Research Service (ARS) on issues related to weeds. The research emphasis of most of these scientists involves ecology and management or biological control of weeds. Many scientists perform research on weed biology as components of their primary projects on weed control and integrated crop and soil management. Describing all ARS projects involved with weed biology is impossible, and consequently only research that falls within the following arbitrarily chosen topics is highlighted in this article: dormancy mechanisms; cell division; diversity of rangeland weeds; soil resources and rangeland weeds; poisonous rangeland plants; horticultural weeds; weed traits limiting chemical control; aquatic and semi-aquatic weeds; weed/transgenic wheat hybrids; seedbanks, seedling emergence and seedling populations; and weed seed production. Within these topics, and others not highlighted, the desire of ARS is that good information on weed biology currently translates or eventually will translate into practical advice for those who must manage weeds.
authors.affiliation: USDA-ARS, 803 Iowa Avenue, Morris, MN 56267, USA. forcella@morris.ars.usda.gov
authors.forename: Frank
authors.initials: F
authors.lastname: Forcella
mesh_terms: D000383:Agriculture / Q000379:methods*; D044822:Biodiversity; D006540:Herbicides / Q000494:pharmacology; D010572:Pest Control, Biological / Q000379:methods*; D063245:Plant Development; D010944:Plants / Q000187:drug effects / Q000469:parasitology; D012106:Research; D012107:Research Design; D012639:Seeds / Q000187:drug effects / Q000254:growth & development / Q000469:parasitology; D012987:Soil / Q000032:analysis; D014481:United States; D016885:United States Department of Agriculture; D000078329:Workforce
chemical_list: D006540:Herbicides; D012987:Soil