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 : INCREASING WATER PRODUCTIVITY, NUTRIENT EFFICIENCY AND SOIL HEALTH IN RAINFED FOOD SYSTEMS OF SEMI-ARID SOUTHERN GREAT PLAINS

Identification : 0442313

Pays : Etats Unis

Durée : START : 01 OCT 2022 TERM : 31 AUG 2024

Présentation _ OBJECTIVES : The overarching goal of the project is to sustainably increase productivity of rainfed agricultural systems in the Southern Great Plains region by increasing water and nitrogen (N) use efficiencies and reducing yield losses due to environmental stresses while enhancing soil health. The specific objectives of modeling team of the project is to 1) scale field experiments to regional scale to understand performance of current and aspirational systems, in terms of water and nitrogen use efficiency and soil carbon dynamics, under different climatic conditions, and 2) develop web-based in-season nitrogen recommendation tool to optimize nitrogen application in winter wheat systems.

APPROACH : EPIC model will be spatially calibrated using spatial optimization approaches and measurement from field experiments. Calibrated model will be employed at regional scale to simulate crop yield, water use, nitrogen use efficiency and soil carbon under current and aspirational cropping systems. Further, web-based nitrogen recommendation tool will be developed using EPIC crop model and web development tools (i.e ReactJS, Open Street Maps, React-leaflet, NodeJS and SQL). We will engage with farmers to evaluate performance of the tool.

Performing Institution : AGRICULTURAL RESEARCH SERVICE - US ARID-LAND RESEARCH CENTER 21881 NORTH CARDON LANE MARICOPA, ARIZONA 85238
Investigator : BANDARU V

Présentation : USDA (NIFA)