Transplanting Labour & Person-Days to Set the Field

First the tool finds the total plants to set: area in square metres × plants per square metre. Then it divides by how many seedlings one worker transplants in a day. Person-days = total plants ÷ plants-per-person-day. One person-day is a single worker working a single day, so 40 person-days could be 40 workers for one day, 10 workers for four days, or any combination that multiplies out the same.

It's how many seedlings you set in each square metre of field, fixed by your spacing. For example, 20 cm × 20 cm spacing gives 25 plants per square metre (1 ÷ 0.20 ÷ 0.20). Wider spacing means fewer plants and less labour; tighter spacing means more of both. Enter the density your crop and variety call for.

It varies widely with crop, method, soil and skill. Hand-transplanting puddled paddy often runs 1,000–2,000 hills per worker per day; vegetable seedlings into prepared beds can be faster or slower depending on plug size and spacing. Use a rate you've measured on your own farm for the best estimate, or a local benchmark to start.

Three figures: the person-days needed, the total number of plants for the field, and the field area in a clear unit. Person-days drives your crew planning and wage cost; total plants tells you how many seedlings to raise in the nursery; area confirms the scale you entered.

Divide person-days by the number of days you have to finish. If you need 60 person-days done in 3 days, that's 20 workers a day. Transplanting is time-sensitive — seedlings have an ideal age window and fields must be ready — so back-solving the crew from your deadline keeps the operation on time.

Seedlings transplanted at the right age establish fastest and yield best; too young and they're fragile, too old and they're stunted and set back. A field that drags on for days because the crew was too small can miss that window. Sizing labour correctly up front lets the whole field go in during the ideal few days.

Yes. Multiply the person-days by your daily wage rate to get the transplanting labour cost. Because the calculation scales linearly with area and density, you can quickly compare spacings or field sizes and see how each changes both the seedling count and the wage bill.

The same logic applies if you treat the machine-plus-operator as your unit and use its effective plants-per-day rate, though mechanical transplanters are usually rated in area per hour rather than plants per person. For manual and semi-manual crews the person-day model fits directly.

Yes — paddy, tomato, chilli, brassicas, onion, tobacco and any transplanted crop follow the same arithmetic. Only the density and the per-worker daily rate change between crops; the structure of the calculation is universal.

They're solid planning figures. Real output per worker drifts with weather, mud depth, seedling quality and breaks, so build in a small buffer and check progress on day one against the estimate. Use the result to size the crew and budget, then adjust as the field tells you.