Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

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

Titre : WATER MANAGEMENT FOR CROP PRODUCTION IN ARID AND SEMI-ARID REGIONS AND THE SAFE USE OF ALTERNATIVE WATER RESOURCES

Identification : 0441500

Pays : Etats Unis

Durée : START : 06 FEB 2022 TERM : 05 FEB 2027

Objectifs
Drought, climate change, and competition for resources are reducing the availability of irrigation water and farmland in arid and semi-arid regions, including the western United States. One strategy for maintaining or enhancing productivity in the face of diminished resource availability is to make greater use of marginal lands and alternative water sources. Sustainable use of impaired waters requires soil, water, and crop management practices that optimize crop production while minimizing the degradation of natural resources by salts and other contaminants. Advanced models and decision-support tools are needed to evaluate alternative management practices and to assist growers and water managers in satisfying increasingly stringent regulations. Objective 1 : Develop and deploy digital technologies, models, and best management practices for the management of saline and sodic soils and the safe use of alternative water resources for irrigation. Sub-objective 1.A : Develop and evaluate an integrated system of sensors for site-specific irrigation management to control soil salinity and related adverse conditions when using degraded waters. Sub-objective 1.B : Develop databases and machine learning models for rapid estimation of soil-hydraulic and related parameters needed in water quality models and decision support tools. Sub-objective 1.C : Investigate wastewater reuse and water quality impacts on soil properties and contaminant loading to underlying and downstream water resources. Sub-objective 1.D : Expand user-friendly, web-based informatics and modeling platform for the diagnosis and management of saline and sodic soils. Objective 2 : Develop comprehensive datasets for agricultural water use, crop productivity, and carbon balance in salt-affected, semi-arid regions for a range of crops using various management practices. Sub-objective 2.A : Observe water use and crop productivity in contrasting mature citrus varietals to determine potential time periods for applying deficit irrigation for water conservation. Sub-objective 2.B : Extend artificial intelligence tools for water, nutrient, and salinity management to perennial specialty crops in Southern California. Objective 3 : Determine the G x E x M interactions related to crop salt tolerance and drought resistance. Sub-objective 3.A : Evaluate the impact of regenerative agricultural practices in wine grapes on productivity, water use, and resilience to abiotic

Performing Institution : AGRICULTURAL RESEARCH SERVICE RIVERSIDE, CALIFORNIA 92507
Investigator : SKAGGS T H ; ANDERSON R G ; CORWIN D L ; SCHMIDT M P

Présentation : USDA (NIFA)