Agriculture Yield Response To Water Ky Calculator
Infer actual Ky=(1−Ya/Ym)/(1−ETa/ETm) from independently matched references; negative yield gain retained, not causal efficacy. Caller independently establishes units, regime, calibration and applicability; this does not establish design-code compliance, authenticity, operational safety, treatment efficacy or a validated forecast.
Description
Yield response to water compares relative yield loss with a matched evapotranspiration deficit.
Yield response to water compares relative yield loss with a matched evapotranspiration deficit.1
The resulting observed coefficient is conditional on reference yields and the comparison period. Use Agriculture Yield Response To Water Ky Calculator to evaluate the supplied inputs under the model explained below.
When to use Agriculture Yield Response To Water Ky Calculator
Use Agriculture Yield Response To Water Ky Calculator to evaluate the supplied inputs under the model explained below. Establish the units, measurement scope and model assumptions before entering values.
How to use Agriculture Yield Response To Water Ky Calculator and understand its results
- Establish the units, measurement scope and model assumptions before entering values.
- Enter Observed actual et mm, Caller matched maximum et mm, Observed actual yield kg, Caller matched maximum yield kg using the field table and validation rules below, then run the tool.
- Read Observed water yield response ky; interpret the units, signs, ordering and unknown-value placeholders described below.
- Correct reported input errors and rerun. Apply successful results according to their specific meanings and check the assumptions before using them in a decision.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedActualEtMm | Observed actual et mm | number | Required; constraints below |
| callerMatchedMaximumEtMm | Caller matched maximum et mm | number | Required; constraints below |
| observedActualYieldKg | Observed actual yield kg | number | Required; constraints below |
| callerMatchedMaximumYieldKg | Caller matched maximum yield kg | number | Required; constraints below |
Enter nonnegative actual ET in mm and yield in kg, and positive matched maximum ET and yield. Require actual ET<maximum ET for a strictly positive deficit. Divide relative yield loss by relative ET deficit. Actual yield above the reference is accepted and yields negative Ky. No crop-stage coefficient, causal fit or forecast is supplied.
observedKy=(1−actualYield/maximumYield)/(1−actualET/maximumET) Use the field order, units and branch conditions described above.
| Output field | Meaning | Value type |
|---|---|---|
| observedWaterYieldResponseKy | Observed water yield response ky | number |
{
"input": {
"observedActualEtMm": 80,
"callerMatchedMaximumEtMm": 100,
"observedActualYieldKg": 70,
"callerMatchedMaximumYieldKg": 100
},
"output": {
"observedWaterYieldResponseKy": 1.5000000000000007
}
}Limitations and assumptions
The resulting observed coefficient is conditional on reference yields and the comparison period. Apply the exact scope and assumptions explained above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse arrays fail validation. Domain-specific bounds, alignments and supported tokens are explained above; extremely large inputs or outputs can also be rejected. Input errors differ from successful false results, empty match lists and unknown-evidence placeholders.
Alternative or Complementary methods
Use Agriculture Irrigation Uniformity Coefficient Calculator for a related task: An irrigation uniformity coefficient compares deviations with a weighted mean catch.
Use Agriculture Crop Coefficient Kc Calculator for a related task: A crop coefficient compares crop ET with matched reference ET.
References
Similar or alternative tools
- Agriculture Irrigation Uniformity Coefficient Calculator
An irrigation uniformity coefficient compares deviations with a weighted mean catch.
- Agriculture Crop Coefficient Kc Calculator
A crop coefficient compares crop ET with matched reference ET.