Transplanting Requirement Calculator

Work out transplanting requirement instantly with clear inputs, formula shown and shareable results.

About Transplanting Requirement Calculator

Seedling requirement is area x target population, raised by a gap-filling allowance because some transplants always fail in the first fortnight and must be replaced from held-back stock. Dividing by the planting rate per worker per day gives the labour to book for the operation.

Formulas

Seedling requirement

Seedlings = area (ha) x population (per ha) x (1 + gap-filling %)

Labour

Man-days = seedlings / seedlings planted per worker per day

Worked example

With the default values below, Transplanting Requirement Calculator returns Seedlings To Raise of 54,000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Area To Transplantminimum 0.01 ha: 2 ha
Target Plant Populationminimum 1 plants/ha: 25,000 plants/ha
Gap-Filling Allowanceaccepts 0–40 %: 8 %
Seedlings Planted Per Worker Per Dayminimum 1: 900

Results

Seedlings To Raise: 54,000
Field Population: 50,000
Gap-Filling Stock: 4,000
Transplanting Man-Days: 60.00

Step by step

1Values used
2Seedling requirement
3Labour
4Seedlings To Raise= 54,000
5Field Population= 50,000
6Gap-Filling Stock= 4,000
7Transplanting Man-Days= 60.00

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How soon should gap filling be done?

Within 7-14 days of transplanting, while the replacement can still catch up with the main crop. Later gap filling produces uneven maturity at harvest.

Does mechanical transplanting change the numbers?

The seedling requirement is the same, but a rice transplanter needs mat-type nursery trays and covers 2-4 hectares a day, so replace the per-worker rate with the machine's field capacity.