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 extension PDFs, textbook equations, or expensive proprietary software. SoilTune was created to democratize precision agronomy—transforming peer-reviewed science into instant, interactive, web-native computational engines that anyone can trust.
No Black Boxes. No Rule-of-Thumb 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 tools.
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.
Our Core Principles
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Scientific Rigor First
Calculations adhere strictly to AOAC, AAPFCO, USDA Handbook 60, and Land-Grant Extension standards.
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Zero Black-Box Algorithms
We publish the exact formulas, regression models, and conversion factors behind every single output.
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Practical Field Safety
Built-in safeguards flag risk factors like root plasmolysis, aluminum toxicity, salt burn, and stock tank precipitation.
Powered by Eight Specialized Computational Engines
SoilTune isn't a single generic calculator—it's a comprehensive suite of purpose-built engines designed to address specific physical, chemical, and hydro-agronomic challenges.
Lime Neutralization Engine
Evaluates Active, Exchangeable, and Residual acidity pools using SMP, Adams-Evans, and Base Saturation shift models calibrated for ECCE and depth.
Acidification Kinetics
Models elemental sulfur (S⁰) biological oxidation kinetics via a Q10 = 2.1 temperature model, alongside ferrous and aluminum sulfate hydrolysis.
CEC & Charge Engine
Converts mass concentrations into Faraday mole-charge equivalents, featuring Cation Summation and empirical clay mineralogy models.
Albrecht Equilibrium
Resolves base saturation percentages and Ca:Mg structural ratios to optimize aggregate flocculation, aeration, and non-pH altering cation mass remediation.
Sodic Reclamation
Derives pure gypsum (CaSO4·2H2O) mass required to collapse diffuse double layers and displace exchangeable sodium under USDA Handbook 60 rules.
Hydro-Diagnostics
Evaluates Sodium Adsorption Ratio, Rengasamy & Marchuk CROSS (accounting for K dispersion and Mg lower flocculation), and Suarez calcite precipitation (Caadj).
Hydroponic Conductance
Calculates electrical conductivity from first principles using Kohlrausch's Law of Independent Migration of Ions and Debye-Hückel activity coefficients.
Blend Physics Solver
Formulates custom multi-nutrient blends via sequential linear elimination, correcting for fluid thermal expansion, Salt Index burn risk, and inert filler.
Built Upon Global Institutional Standards
SoilTune does not invent arbitrary formulas. Every mathematical model and empirical constant is benchmarked directly against published protocols from leading agricultural institutions:
Meet the Experts Behind the Math
At SoilTune, we know that precision agriculture requires more than just clean code—it requires science that works in your fields. We’ve partnered with independent agronomists, crop specialists, and public extension educators to rigorously test our tools. The result? Calculations and recommendations you can actually trust, backed by real-world experience.
Chris Taylor
Independent Agronomist & Technical Reviewer
Chris stress-tests our calculator algorithms against real-world conditions. Before any model goes live, he reviews it to ensure the outputs make practical, financial, and agronomic sense for growers and land managers.
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Landon Gheer
Plant, Soil Health & Seed Industry Agronomist
Landon bridges the gap between raw data and field-level profitability. His expertise in variable-rate technology ensures our nutrient calculators provide actionable, ROI-positive recommendations tailored to modern, precision-focused operations.
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Leslie Johnson
Extension Educator & Soil Health Specialist
Leslie helps us translate dense soil chemistry into clear, actionable advice. By partnering with public extension programs, she ensures our educational resources meet the gold standard for farmer education, making complex science accessible to everyone.
View Expert ProfileOur Commitment to Transparent Collaboration
Real expertise requires real collaboration. We don’t just list names on a page for show. We actively partner with and compensate our advisory board to ensure every tool and article we publish meets the highest standards of scientific integrity.
Rigorous, Independent Audits
Every calculator is stress-tested by compensated, independent agronomists to ensure the math holds up in real-world field conditions, not just in theory.
Content Written by Practitioners
Our flagship guides are authored or co-authored by industry specialists. You’ll always know exactly who wrote our content and what real-world experience they bring.
University-Grade Science, Simplified
We partner with public extension educators to fulfill their outreach mission, bringing peer-reviewed soil health science directly to your screen in plain English.
Platform Impact by the Numbers
Empowering growers, extension officers, and agronomists worldwide with transparent tools.
Are You an Agronomist or Extension Educator?
We’re always looking to grow our network of technical reviewers and guest contributors. If you’re passionate about soil health, crop modeling, or sustainable agriculture, let’s build tools that actually help farmers succeed.
