Hand Harvest Picker Days Crew

Budget heterogeneous block picker-day exposure with measured productive rates and explicit scheduled-time utilization, assuming freely allocatable crew-days; not a harvesting completion/welfare or work-safety guarantee.

Description

Picker-day demand depends on productive rate and the share of scheduled hours actually productive.

Picker-day demand depends on productive rate and the share of scheduled hours actually productive. Heterogeneous blocks may require different exposures.

When to use Hand Harvest Picker Days Crew

Use this tool to budget heterogeneous block picker-day exposure with measured productive rates and explicit scheduled-time utilization, assuming freely allocatable crew-days; not a harvesting completion/welfare or work-safety guarantee.

Prepare vineyard measurements, dates or block records for the intended growing period. Keep weights, counts and weather observations in the stated units.

How to use Hand Harvest Picker Days Crew and understand its results

Prepare vineyard measurements, dates or block records for the intended growing period. Keep weights, counts and weather observations in the stated units.
Enter blockHarvestMassesKg, observedPickerRatesKgPerProductiveHour, scheduledHoursPerPickerDay, productiveTimeFractions, availableWholeDays using the field table and calculation rules, then run the tool.
Read requiredPickerDaysByBlock, totalRequiredPickerDays, minimumWholeCrewForAvailableDays. 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
blockHarvestMassesKg	Block harvest masses kg	list of number	Required
observedPickerRatesKgPerProductiveHour	Observed picker rates kg per productive hour	list of number	Required
scheduledHoursPerPickerDay	Scheduled hours per picker day	number	Required
productiveTimeFractions	Productive time fractions	list of number	Required
availableWholeDays	Available whole days	integer	Required

Align nonnegative block masses with positive rates and productive fractions in (0,1]. Use positive scheduled hours and integer available days. Sum fractional picker-days, then round crew demand upward.^[1]

Paired lists must be nonempty and have equal lengths.

picker-days = mass/(kg per productive hour × scheduled hours/day × productive fraction)

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

Output field	Meaning	Value type
requiredPickerDaysByBlock	Required picker days by block	list of number
totalRequiredPickerDays	Total required picker days	number
minimumWholeCrewForAvailableDays	Minimum whole crew for available days	number

json

{
  "input": {
    "blockHarvestMassesKg": [
      1000,
      2000
    ],
    "observedPickerRatesKgPerProductiveHour": [
      100,
      200
    ],
    "scheduledHoursPerPickerDay": 8,
    "productiveTimeFractions": [
      0.5,
      1
    ],
    "availableWholeDays": 2
  },
  "output": {
    "requiredPickerDaysByBlock": [
      2.5,
      1.25
    ],
    "totalRequiredPickerDays": 3.75,
    "minimumWholeCrewForAvailableDays": 2
  }
}

Limitations and assumptions

Freely reallocatable crew-days are assumed; completion and work-safety are not guaranteed.

Numbers and computed results must be finite; overflow produces an error. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Picking Lugs Per Ton: Budget whole picking lugs from actual required mass and caller usable payload, retaining final capacity remainder; no bin-density estimate or load/handling safety certification. For a complementary task, use Machine Harvest Loss Percent: Audit independent preharvest/collected/ground/residual crop inventories, preserving signed unaccounted mismatch instead of forcing mass closure or calling every residual machine loss.

References

Hand Harvest Picker Days Crew — tool.io

Similar or alternative tools

Picking Lugs Per Ton
Budget whole picking lugs from actual required mass and caller usable payload, retaining final capacity remainder; no bin-density estimate or load/handling safety certification.
Machine Harvest Loss Percent
Audit independent preharvest/collected/ground/residual crop inventories, preserving signed unaccounted mismatch instead of forcing mass closure or calling every residual machine loss.