The foundation layer beneath all ACSL crop models. 2DSOIL is the first comprehensive 2-dimensional finite element soil simulator — modeling water flow, heat transport, solute movement, root dynamics, surface runoff, and residue decomposition across the full soil profile.
Simulate soil water movement using 2DSOIL's implementation of the Richards equation for variably saturated flow. Models infiltration, redistribution, drainage, and root water uptake across a 2D soil profile — the core engine beneath all ACSL crop models.
Simulate nitrate-N leaching through the soil profile using 2DSOIL's convective-dispersive equation (CDE). Estimates N loss to groundwater, identifies management practices that reduce leaching, and quantifies the economic and environmental cost of N not captured by crops.
Estimate surface runoff volume and nutrient loss potential using 2DSOIL's surface water module developed by Wang et al. 2020. Models water fluxes across the soil-water interface, infiltration, and the risk of fertilizer transport to nearby water bodies.
SF34 is the foundation layer of the AgrStak ACSL sector. 2DSOIL is the first comprehensive modular two-dimensional soil simulator developed by USDA-ARS — simulating the major physical, chemical, and biological processes in soil using the Richards equation for water flow, convective-dispersive equation for solute transport, and a 2D convective-diffusive model for root growth.
2DSOIL runs beneath SF32 (MAIZSIM), SF33 (RICESIM-2D), and all other ACSL storefronts. For corn science built on 2DSOIL, see SF32 → · For rice, see SF33 →
Research sources: 2DSOIL (USDA Ag Data Commons) · Wang et al. 2020 (Adv. Water Resour. — surface runoff) · Wang et al. 2021 (root growth, residue mulch) · Wang et al. 2022 · Timlin et al. 1996 (original 2DSOIL design) · AgrStak · agrstak.com · Patent Pending · US App 63/970,943