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Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2019 → INTEGRATED AND COOPERATIVE RUSSIAN THISTLE (SALSOLA TRAGUS) MANAGEMENT IN THE SEMI-ARID PACIFIC NORTHWEST

United States Department of Agriculture (USDA) 2019

INTEGRATED AND COOPERATIVE RUSSIAN THISTLE (SALSOLA TRAGUS) MANAGEMENT IN THE SEMI-ARID PACIFIC NORTHWEST

Russian Thistle Semi-Arid

United States Department of Agriculture (USDA) National Institute of Food and Agriculture

Titre : INTEGRATED AND COOPERATIVE RUSSIAN THISTLE (SALSOLA TRAGUS) MANAGEMENT IN THE SEMI-ARID PACIFIC NORTHWEST

Identification : 1020995

Pays : Etats Unis

Durée : START : 01 SEP 2019 TERM : 31 AUG 2023

Résumé
The most common cropping system in the semi-arid region of the Pacific Northwest (PNW), where low annual precipitation prevents alternative crops, is winter wheat followed by one year of fallow. To save water during the fallow period, weeds must be controlled with herbicides or tillage. One significant challenge to these cropping systems is Russian thistle (Salsola tragus). Russian thistle is a continuous problem probably because seeds are reintroduced to a field from roadsides, ditches, and neighboring fields by plants tumbling with the wind. The goals of this project are : 1) Determine the biological and ecological factors that make Russian thistle a recurrent problem, 2) Demonstrate that reducing Russian thistle problems is possible by integrating practices that prevent Russian thistle plants from tumbling, and 3) Prove that Russian thistle infestations can be decreased more efficiently with a cooperative control effort. To achieve these goals, the particular objectives we propose are : 1) Investigate aspects of Russian thistle ecology and biology to improve its control in dryland cropping systems, 2) Investigate harvest and post-harvest strategies to improve integrated Russian thistle management in no-till dryland cropping systems, 3) Evaluate the potential of cooperative efforts to improve Russian thistle control, and 4) Document and communicate results to growers, their advisors, other stakeholders, and the scientific community. By improving integrated Russian thistle management practices the project seeks to enhance the economic and environmental sustainability of dryland cropping systems in the PNW and similar semi-arid regions.

Objectifs
The goals of this project are:1) we want to determine the biological and ecological factors that make Russian thistle to be a recurrent problem,2) we want to demonstrate that reducing Russian thistle problems is possible by integrating practices that prevent Russian thistle plants from tumbling, and3) we want to prove that Russian thistle infestations can be decreased more efficiently with a cooperative control effort.To achieve these goals, the particular objectives we propose are:1) Investigate aspects of Russian thistle ecology and biology important to formulating an integrated and cooperative control strategy for dryland cropping systems of the PNW.1.a. Model seedling emergence and evaluate seed longevity and timing of viable seed production of Russian thistle.1.b. Determine water use after harvest by Russian thistle and its effect on yield in the following crop.2) Investigate harvest and post-harvest strategies for Russian thistle management in no-till cropping systems of the PNW.2.a. Evaluate the effect of stubble height on herbicide control and Russian thistle dispersion.2.b. Determine optimum post-harvest herbicide timing.3) Evaluate the potential for cooperative efforts to improve Russian thistle control.3.a. Support a grower group to conduct a small-scale cooperative demonstration. Extension.3.b. Evaluate cost savings where upwind Russian thistle populations are low.3.c. Evaluate the effectiveness of cooperative Russian thistle control efforts.4) Document and communicate results from above objectives.

Financement total : $324,997

Performing Institution : OREGON STATE UNIVERSITY
Investigator : Barroso, J. ; Lyon, DR, J.. ; Schillinger, WI, F. ; Lutcher, LA, . ; Wuest, ST,

Présentation : USDA (NIFA)

Page publiée le 28 novembre 2021