Petiole Potassium Sufficiency Lookup
Audit actual petiole K/K2O reporting convention under independently justified conversion factor and caller elemental-K assay band; not nitrate conversion, total uptake or fertilizer sufficiency recommendation.
Description
Potassium assay results may be reported as elemental K or K2O.
Potassium assay results may be reported as elemental K or K2O. A common reporting basis is needed before comparing a petiole band.1
Enter aligned nonempty percentages 0–100 and exact K/K2O tokens, positive conversion fraction≤1 and two ordered elemental-K bounds 0–100. Return converted percentages and zero-based outside indices.
When to use Petiole Potassium Sufficiency Lookup
Use Petiole Potassium Sufficiency Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No conversion factor is supplied, assay validated or fertilizer sufficiency recommendation made.
Prepare the measured vineyard records, aligned lists and independently verified local limits or catalog requested. Keep units, crop stages and observation periods consistent.
How to use Petiole Potassium Sufficiency Lookup and understand its results
- Prepare the measured vineyard records, aligned lists and independently verified local limits or catalog requested. Keep units, crop stages and observation periods consistent.
- Enter observedPetiolePotassiumPercent, callerPotassiumReportBasisTokens, callerK2oToElementalKMassFraction, callerElementalKBandPercent using the field table and calculation rules, then run the tool.
- Read elementalPotassiumPercent, petioleSamplesOutsideCallerElementalKBand. 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 |
|---|---|---|---|
| observedPetiolePotassiumPercent | Observed petiole potassium percent | list of number | Required |
| callerPotassiumReportBasisTokens | Caller potassium report basis tokens | list of string | Required |
| callerK2oToElementalKMassFraction | Caller k2o to elemental k mass fraction | number | Required |
| callerElementalKBandPercent | Caller elemental k band percent | list of number | Required |
Enter aligned nonempty percentages 0–100 and exact K/K2O tokens, positive conversion fraction≤1 and two ordered elemental-K bounds 0–100. Return converted percentages and zero-based outside indices.
elemental=reported for K, reported×conversionFraction for K2O Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| elementalPotassiumPercent | Elemental potassium percent | list of number |
| petioleSamplesOutsideCallerElementalKBand | Petiole samples outside caller elemental k band | list of number |
{
"input": {
"observedPetiolePotassiumPercent": [
1,
2
],
"callerPotassiumReportBasisTokens": [
"K2O",
"K"
],
"callerK2oToElementalKMassFraction": 0.8,
"callerElementalKBandPercent": [
0.9,
2.1
]
},
"output": {
"elementalPotassiumPercent": [
0.8,
2
],
"petioleSamplesOutsideCallerElementalKBand": [
0
]
}
}Limitations and assumptions
No conversion factor is supplied, assay validated or fertilizer sufficiency recommendation made.
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. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Petiole Nitrate Nitrogen Sufficiency Lookup: Nitrate and nitrate-nitrogen reporting use different mass bases. Nitrogen-equivalent conversion requires explicit compatible molecular masses. For a complementary task, use Magnesium Petiole Sufficiency Lookup: Dry- and fresh-mass tissue assays need a shared basis before band comparison. Dry matter fraction converts concentration per dry mass to fresh-mass concentration.
References
-
Petiole Potassium Sufficiency Lookup — tool.io
Similar or alternative tools
- Petiole Nitrate Nitrogen Sufficiency Lookup
Nitrate and nitrate-nitrogen reporting use different mass bases. Nitrogen-equivalent conversion requires explicit compatible molecular masses.
- Magnesium Petiole Sufficiency Lookup
Dry- and fresh-mass tissue assays need a shared basis before band comparison. Dry matter fraction converts concentration per dry mass to fresh-mass concentration.