Compare measured 1:5 soil-water extract EC and measured saturation-paste-extract ECe, then reconcile ECe with a sourced crop threshold without a universal conversion.
A quick decision brief for this specific tool
Separately measured matched-sample EC1:5 and saturation-paste-extract ECe plus an externally sourced crop ECe threshold
Measured ECe comparison with the entered threshold while retaining EC1:5 and a descriptive matched-sample ratio
Compares method-labeled laboratory records; it never applies a universal EC1:5-to-ECe conversion or Safe/Marginal grade
Choose your path
Compare separately measured 1:5 soil-water extract EC and saturation-paste-extract ECe records, then screen the measured ECe against a user-entered crop threshold without converting between methods.
Keep each EC value labeled by extraction method and compare the measured ECe with the entered threshold.
Enter the matched 1:5 EC, measured ECe and sourced crop threshold.
Sees the threshold difference and a descriptive sample ratio without an estimated ECe.
Retain depth, date, saturation percentage, temperature/correction and lab method.
Compare only compatible sample records and review ion, gypsum and sodicity evidence separately.
Does not infer trend from unlike extraction or sample bases.
Avoid treating one threshold comparison as a universal safe/marginal/saline diagnosis.
Use crop stage/cultivar, yield-response source, field variability, irrigation water, drainage and sodicity evidence externally.
Does not make amendment or irrigation decisions from this result alone.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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Enter the laboratory-reported 1:5 soil-water extract EC and separately measured saturation-paste-extract ECe from matched samples. The calculator never estimates ECe with a universal multiplier.
The primary result is measured ECe minus the user-entered crop ECe threshold. Preserve crop, cultivar, stage, yield-response definition, source, temperature basis and sampling depth.
When 1:5 EC is above zero, the displayed ECe-to-1:5 ratio only describes this matched sample pair. Texture, saturation percentage, ions, gypsum and laboratory procedure prevent a universal conversion.
Updated: August 2026
Keep both measured EC records labeled by extraction method and reproduce the crop-threshold difference.
Compare like depths, dates, sample preparation and methods; inspect spatial variability and laboratory quality records outside the calculator.
Use a sourced ECe response threshold with crop and field evidence; do not convert the difference into a universal safe, marginal or saline diagnosis.
Use a separately measured saturation-paste-extract ECe or a locally validated method-specific relationship with its full applicability limits.
Review sampling depth and variability, crop stage and source, irrigation-water salinity, drainage, ions, gypsum and sodicity before choosing management action.
This tool reconciles two explicitly labeled laboratory EC measurements and a sourced crop ECe threshold. It does not estimate ECe, diagnose the field or recommend leaching, drainage or amendments.
