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ARS Home » Southeast Area » Tifton, Georgia » Southeast Watershed Research » Research » Research Project #437252

Research Project: Decision Support System for Agrotechnology Transfer Application for LTAR Croplands Locations

Location: Southeast Watershed Research

Project Number: 6048-13000-027-63-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Sep 30, 2019
End Date: Sep 30, 2020

Objective:
1. Evaluate the performance of the DSSAT models with available crop-rotation data from LTAR agroecosystems where row crops play a key role in the crop rotation. 2. Enable yield, resource use, and environmental impact projections for these agroecosystems for both pre-season, within-season, and climate change conditions. 3. Provide guidance for improved data collection for systems analysis applications and for data harmonization in collaboration with NAL.

Approach:
Under the guidance of University of Florida (UF) personnel will work with LTAR cropland locations to facilitate testing of the DSSAT crop model. LTAR locations will be contacted to evaluate both the interest and the suitability to participate in the study. Selection will be dependent on the data-set available for each location. A sub-set of locations will be selected for detailed testing of cropping systems utilizing DSSAT. Once selected, UF personnel will work with the LTAR locations to assemble data, test DSSAT, and report results. The DSSAT modeling will focus upon select crop rotations where sufficient long-term data are available for thorough model testing. The model testing will focus on evaluating established business as usual crop rotation/systems at the LTAR locations. Once accurate representations of these cropping systems are established with DSSAT, the modeling framework will be used to examine alternative management effects and the impacts of long-term climate change. A procedure and protocol for improved data collection and for model application will be developed and shared with the remaining LTAR locations. Any data-shortcomings will be outlined.