Bridging the Gap Between
Land-Grant Science & Field-Level Action
For decades, advanced soil chemistry, thermodynamics of ion exchange, and precision fertigation models were trapped inside static university PDFs and expensive enterprise tools. SoilTune democratizes precision agronomy through transparent, peer-reviewed computational engines that anyone can trust.
No Black Boxes. No Guesswork.
Just Exact Agronomic Physics.
Modern agriculture faces a double challenge: optimizing crop yields and return on investment while protecting water quality, soil biology, and long-term land health. Yet, growers and agronomists are often forced to choose between oversimplified "rule-of-thumb" conversion factors or expensive, closed-source enterprise software.
SoilTune eliminates the guesswork. Every calculator on our platform exposes its full mathematical and chemical framework. We combine mass-balance stoichiometry, limiting molar ion conductances, biological oxidation kinetics, and double-layer physical chemistry into transparent tools accessible from any mobile phone or tractor cab.
Whether calculating reserve acidity neutralization or formulating multi-nutrient fertigation recipes, you get unredacted, peer-reviewed science built for real-world field conditions.
// Kohlrausch Conductance Model
EC = EC_water + Σ(C_i × z_i × Λ_i × γ_i) / 1000
// Rengasamy & Marchuk CROSS Model
CROSS = (Na + 0.56*K) / √((Ca + 0.60*Mg) / 2)
// USDA Sodic Reclamation
Gypsum = (ΔNa_meq) × 0.86 × Depth_adj
Engine Mathematics Calibrated Against Leading Agricultural Institutions
Eight Purpose-Built Computational Engines
SoilTune is not a generic lookup table. Each tool handles specific thermodynamic, chemical, and hydro-agronomic calculations.
1. Lime Neutralization
Evaluates Active, Exchangeable, and Reserve acidity via SMP, Adams-Evans, and BS% models calibrated for ECCE and tillage depth.
2. Acidification Kinetics
Models biological oxidation of S⁰ (Q₁₀ = 2.1) and mineral salt hydrolysis with strict single-dose caps and 60-day rest intervals.
3. Fertilizer Blend Solver
Resolves multi-nutrient linear matrices (P → K → S → N), fluid thermal SG, and in-furrow Salt Index burn thresholds.
4. CEC & Charge Engine
Converts elemental mass ppm into Faraday mole-charge equivalents (meq/100g) with mineralogical pedotransfer estimation.
5. Albrecht Equilibrium
Computes base saturation percentages and Ca:Mg ratios to evaluate compaction hazard and derive pure elemental cation mass.
6. Sodic Reclamation
USDA Handbook 60 gypsum requirement models to displace exchangeable Na⁺, collapse diffuse double-layers, and calculate leaching volume.
7. SAR & CROSS Water
Evaluates irrigation risk via standard SAR, Rengasamy-Marchuk CROSS (K dispersion / Mg factor), and Suarez calcite precipitation.
8. Hydroponic Conductance
Calculates solution EC from ionic conductances using Kohlrausch's Law and enforces Tank A / Tank B compatibility rules.
Meet the Experts Behind the Math
Precision agriculture requires more than clean code—it requires science proven in the field. We partner with independent agronomists, crop consultants, and extension educators to stress-test every calculation engine.
Chris Taylor
Chris stress-tests our calculator algorithms against real-world field conditions across Wales and the West, ensuring outputs make practical, economic, and agronomic sense.
Landon Gheer
Landon bridges the gap between raw laboratory data and grower profitability. His expertise ensures nutrient calculations produce actionable, ROI-positive variable-rate prescriptions.
Leslie Johnson
Leslie translates dense soil chemistry into clear, accessible guidance. Partnering with public extension programs, she ensures educational materials meet gold-standard public outreach protocols.
Independent Audits
Every calculator is stress-tested by independent agronomists to ensure math holds up across real-world soil profiles.
Written by Practitioners
Our technical documentation and formulas are authored and reviewed by credentialed soil scientists and agronomists.
Extension Aligned
We support the mission of public university extension systems by making peer-reviewed research freely accessible.
Ready to Put Precision Math to Work?
Grab your latest laboratory soil or water analysis and put transparent agronomic physics to work in your fields.
