Open methods
Build credible field trials, organize laboratory results, compare changes over time, and reuse analysis methods without hiding assumptions.
Find soil survey areas, inspect map units, components, and horizons, compare two places, and explore how mapped soils may absorb or shed rainwater. Results retain their USDA source, retrieval time, and generated query.
Define a question, baseline, control, treatments, replication, measurements, costs, and risks.
See workflow →Normalize laboratory values while preserving method, units, reference ranges, and uncertainty.
See principles →Connect tests, treatments, images, observations, costs, yields, and decisions across seasons.
Preview timeline →Find sampling protocols, calculators, R and Python workflows, and revision histories.
Browse examples →Field Trial Builder
The builder prompts for decisions that are easy to miss in an informal comparison and keeps a readable plan alongside technical detail.
Not every farm trial can meet publication standards. A clearly documented comparison can still be valuable when its limitations are visible.
State the decision you want to improve and the response you expect.
Record soil, crop, climate, irrigation, management history, and existing variability.
Define what changes, what stays the same, plot layout, rates, and repeated comparisons.
Choose outcomes, units, methods, locations, depths, instruments, and timing before results are known.
Track economics, unintended effects, privacy, licenses, and how inconclusive results will be shared.
Soil Test Interpreter
A laboratory value is not universal. Extraction method, sampling depth, units, crop, climate, salinity, and field history affect interpretation.
Original PDF or CSV and laboratory name
Extractant, instrument, and reported basis
Date, depth, location scheme, and composite count
Original units plus documented conversions
Personal soil record
Tests become more useful when they remain connected to treatments, weather, crop response, costs, and later measurements.
Attach source files, sampling locations, depth, methods, and field conditions.
Record material, analysis, rate, timing, equipment, plot, weather, and cost.
Separate photographs and observations from measured values and interpretations.
Ask whether the response repeated, persisted, reduced inputs, or created unintended effects.
Open methods
Field procedure, soil-moisture cautions, replications, units, and known limitations.
Example · v0.1
Import checks, treatment contrasts, uncertainty, diagnostic plots, and report output.
Planned · Open license
Analyte, value, unit, method, detection limit, sampling depth, date, and provenance.
Draft schema