Vine Age Full Production Timeline Lookup

Locate first actually observed age achieving caller matched-cohort yield criterion, no interpolation/extrapolation or universal full-production age; age/yield association not causal maturation proof.

Description

Production maturity can be summarized by the first observed cohort age meeting a chosen yield criterion.

Production maturity can be summarized by the first observed cohort age meeting a chosen yield criterion. Observational attainment is distinct from a predicted age.^[1]

Enter aligned nonnegative age/yield lists with at least two strictly increasing ages and nonnegative criterion. Return first qualifying age or −1, attainment flag and final observed yield.

When to use Vine Age Full Production Timeline Lookup

Use Vine Age Full Production Timeline Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No interpolation, extrapolation or causal maturation model is fitted.

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 Vine Age Full Production Timeline 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 observedVineAgesYears, observedMatchedYieldKgPerVine, callerFullProductionYieldKgPerVine using the field table and calculation rules, then run the tool.
Read firstObservedAgeMeetingCallerYieldYears, callerYieldReachedWithinObservations, lastObservedYieldKgPerVine. 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
observedVineAgesYears	Observed vine ages years	list of number	Required
observedMatchedYieldKgPerVine	Observed matched yield kg per vine	list of number	Required
callerFullProductionYieldKgPerVine	Caller full production yield kg per vine	number	Required

Enter aligned nonnegative age/yield lists with at least two strictly increasing ages and nonnegative criterion. Return first qualifying age or −1, attainment flag and final observed yield.

first age with observedYield≥criterion; absent→−1

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

Output field	Meaning	Value type
firstObservedAgeMeetingCallerYieldYears	First observed age meeting caller yield years	number
callerYieldReachedWithinObservations	Caller yield reached within observations	boolean
lastObservedYieldKgPerVine	Last observed yield kg per vine	number

json

{
  "input": {
    "observedVineAgesYears": [
      1,
      2,
      3,
      4
    ],
    "observedMatchedYieldKgPerVine": [
      1,
      2,
      4,
      5
    ],
    "callerFullProductionYieldKgPerVine": 4
  },
  "output": {
    "firstObservedAgeMeetingCallerYieldYears": 3,
    "callerYieldReachedWithinObservations": true,
    "lastObservedYieldKgPerVine": 5
  }
}

Limitations and assumptions

No interpolation, extrapolation or causal maturation model is fitted.

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. A successfully returned false flag is an evaluated outcome; its meaning is explained above.

Alternative or Complementary methods

Use GDD Stage Threshold Lookup: Heat-sum thresholds can be audited against recorded chronology. First observed attainment is different from interpolated phenology. For a complementary task, use Bud Fruitfulness Cluster Per Shoot Lookup: Bud fruitfulness distinguishes clusters per burst shoot from burst shoots per retained bud. Those denominators should stay separate.

References

Vine Age Full Production Timeline Lookup — tool.io

Similar or alternative tools

GDD Stage Threshold Lookup
Heat-sum thresholds can be audited against recorded chronology. First observed attainment is different from interpolated phenology.
Bud Fruitfulness Cluster Per Shoot Lookup
Bud fruitfulness distinguishes clusters per burst shoot from burst shoots per retained bud. Those denominators should stay separate.