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United States Department of Agriculture

Agricultural Research Service

Research Project: Areawide Management of Invasive Weeds in the Sacramento/ San Joaquin River Delta: A Cooperative Inter-Agency Approach

Location: Exotic and Invasive Weeds Research

Project Number: 2030-22000-029-05-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 15, 2014
End Date: Jul 1, 2019

To assess aquatic weed growth under field conditions (including specific climate change variables such as high temperature, low water, etc.) in cooperation with USDA-ARS and NASA scientists. To monitor the locations, size and spread of aquatic weed populations using both information from aquatic weed treatment and monitoring crews and NASA remote sensing platforms. To use this information to identify the locations and timing of aquatic weed control applications of herbicides and mechanical removal to optimize control outcomes. To assess and implement improved weed control methodologies, including phenological targeting, new herbicides, and new mechanical control regimes, to improve control outcomes and thereby improve protection of water resources, navigation, and ecosystem health in the Delta.

Weed growth and development will be assessed to increase the team’s ability identify and target physiological weak points in plant biology and ecology as it relates to potential control treatments. Abiotic variables driving weed growth and development (such as air and water temperature, light and wind conditions, nutrient levels, etc.) will be monitored and provided to cooperators who will predict weed growth, reproduction and dispersal potential in critical habitats. Biologists will work with remote sensing and Geographic Information System (GIS) mapping specialists from NASA to improve targeting for area-wide weed control. Together, research personnel, operational staff, local land and waterway managers, and county mosquito abatement districts will be planning and working together throughout this project to improve program efficacy and provide sustainable methods for long-term use. Outcomes will be evaluated and promoted in cooperation with USDA, University of California (UC) Cooperative Extension Service specialists and others in San Joaquin and Contra Costa Counties. Program enhancements will thus be directly transferred to end-users as the program advances through direct application and assessment.

Last Modified: 06/26/2017
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