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ARS Home » Midwest Area » Columbia, Missouri » Cropping Systems and Water Quality Research » Research » Research Project #440597

Research Project: Sensitivity and Reproducibility of Dynamic Soil Properties

Location: Cropping Systems and Water Quality Research

Project Number: 5070-21600-001-003-I
Project Type: Interagency Reimbursable Agreement

Start Date: Aug 12, 2021
End Date: Aug 11, 2026

The objective of this project is to analyze and share dynamic soil properties (DSPs) and soil health indicators, and to evaluate repeatability and reproducibility within and across laboratories. Year 2: Project soil carbon changes under variable climate change scenarios using soil carbon likelihood functions developed with the Soil Health Assessment Protocol and Evaluation (SHAPE) tool. Operationalize the new SHAPE tool to interact with NRCS platforms (e.g. soil survey) to provide soil carbon maps under variable climate scenarios.

ARS will: 1) coordinate collection of approximately 1200 soil samples from Sanborn Field for dynamic soil properties; 2) oversee and/or conduct analysis of samples from Sanborn Field and samples from other approved sites for the following soil health and dynamic soil properties: soil organic carbon and total nitrogen, active carbon, bulk density, potentially mineralizable nitrogen, aggregate stability, simplified particle size, cation exchange capacity, phospholipid fatty acids, 4-day respiration, b-glucosidase, b-glucosaminidase, arylsulfatase, phosphatase, and autoclaved citrate extractable protein; and Year 2: 3) hire an ARS post-doctoral research fellow for 2 years and cooperate on planning, methods, and results; 4) oversee and/or conduct revision and refinement of SHAPE to provide soil carbon changes under variable climate change scenarios; and 5) cooperate with NRCS to operationalize SHAPE in NRCS platforms to provide an interactive soil carbon map.