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United States Department of Agriculture (USDA) 2006

INTEGRATED WEED MANAGEMENT IN DRYLAND CROPPING SYSTEMS IN WASHINGTON

Weed Dryland Cropping

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : INTEGRATED WEED MANAGEMENT IN DRYLAND CROPPING SYSTEMS IN WASHINGTON

Identification : WNP00715

Pays : Etats Unis

Durée : Aug 1, 2006 à Jul 31, 2010

Mots clés : weeds conservation tillage weed control integrated pest management dryland farming cropping systems season plant competition herbicides herbicide resistance herbicide resistant plants barley soft wheat aegilops cylindrica salsola winter wheat post harvest mechanical control (weeds) cultural control (weeds) chemical control (weeds) biological control (weeds) population dynamics bromus tectorum crop rotation non tillage

Partenaire : WASHINGTON STATE UNIVERSITY 240 FRENCH ADMINISTRATION BLDG PULLMAN,WA 99164-0001

Objectifs
Develop new information on the biology, ecology and management of jointed goatgrass and Russian thistle. Develop new, improved mechanical, cultural, biological and chemical practices for manageing troublesome weeds and develop integrated weed management systems for dryland crops. Evaluate herbicide resistant winter wheat for jointed goatgrass management strategies as well as determining if natural selection of herbicide resistant jointed goatgrass occurs in the field. Conclude long-term cropping systems studies initiated previously.

Descriptif
Effective postharvest tillage treatments for reducing downy brome populations will be determined in a long-term study by counting weeds in subsequent winter wheat crops. Russian thistle population dynamics in continuous no-till and reduced-till spring wheat will be compared to a stubble-mulch, winter wheat-fallow system will be continued for two more years. Winter wheat competitive traits such as crop height and seeding rate in addition to herbicide resistant varieties will be evaluated in a field heavily infested with jointed goatgrass measuring weed populations, biomass and seed production. Jointed goatgrass seed will be collected in the fields treated with imazamox herbicide and evaluated for naturally selected herbicide resistance. Weed and disease management in a no-till spring wheat/spring barley (no-till and conservation tillage) system will be evaluated agronomically and economically for two more years.

Présentation : USDA

Page publiée le 12 octobre 2015, mise à jour le 3 novembre 2017