Source Water EC Threshold Lookup

Audit actual source-water EC evidence against independently supplied crop-stage maximum, preserving unknowns; no salinity-ion inference, temperature correction or universal crop threshold.

Description

Source-water EC screening needs a verified crop-stage ceiling and known measurements.

Source-water EC screening needs a verified crop-stage ceiling and known measurements. Missing EC observations are not passing values.^[1]

Enter aligned nonempty unique stage IDs/nonnegative limits, exact query and aligned nonempty nonnegative observations/binary evidence. Return strict-above and unknown indices plus chosen mS/cm ceiling.

When to use Source Water EC Threshold Lookup

Use Source Water EC Threshold Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No universal crop threshold, temperature compensation or ionic-composition inference is supplied.

Prepare measured container, labor, environmental or inventory records and independently verified stage limits requested. Keep units, temperature conditions and dates consistent.

How to use Source Water EC Threshold Lookup and understand its results

Prepare measured container, labor, environmental or inventory records and independently verified stage limits requested. Keep units, temperature conditions and dates consistent.
Enter callerCropStageIds, callerSourceEcMaximumMsCm, queryCropStageId, observedSourceEcMsCm, measurementEvidenceFlags using the field table and calculation rules, then run the tool.
Read sourceSamplesAboveCallerEcIndices, sourceSamplesWithoutEcEvidence, callerSourceEcMaximumMsCm. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
callerCropStageIds	Caller crop stage ids	list of string	Required
callerSourceEcMaximumMsCm	Caller source ec maximum ms cm	list of number	Required
queryCropStageId	Query crop stage id	string	Required
observedSourceEcMsCm	Observed source ec ms cm	list of number	Required
measurementEvidenceFlags	Measurement evidence flags	list of number	Required

above=known AND observedEC>selectedCeiling

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
sourceSamplesAboveCallerEcIndices	Source samples above caller ec indices	list of number
sourceSamplesWithoutEcEvidence	Source samples without ec evidence	list of number
callerSourceEcMaximumMsCm	Caller source ec maximum ms cm	number

json

{
  "input": {
    "callerCropStageIds": [
      "a",
      "b"
    ],
    "callerSourceEcMaximumMsCm": [
      0.5,
      1
    ],
    "queryCropStageId": "a",
    "observedSourceEcMsCm": [
      0.4,
      0.8
    ],
    "measurementEvidenceFlags": [
      1,
      0
    ]
  },
  "output": {
    "sourceSamplesAboveCallerEcIndices": [],
    "sourceSamplesWithoutEcEvidence": [
      1
    ],
    "callerSourceEcMaximumMsCm": 0.5
  }
}

Limitations and assumptions

No universal crop threshold, temperature compensation or ionic-composition inference is supplied.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Extremely large text inputs are rejected. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Seedling EC Target Lookup: Final nutrient-solution EC differs from source-water EC. A verified seedling-stage band defines this local check. For a complementary task, use Conductivity Salinity Freshwater Approximation Converter: Freshwater conductivity-to-salinity conversion needs local calibration and a stated temperature normalization. Ionic composition affects the relation.

References

Source Water EC Threshold Lookup — tool.io

Similar or alternative tools

Seedling EC Target Lookup
Final nutrient-solution EC differs from source-water EC. A verified seedling-stage band defines this local check.
Conductivity Salinity Freshwater Approximation Converter
Freshwater conductivity-to-salinity conversion needs local calibration and a stated temperature normalization. Ionic composition affects the relation.