Mechanical Paddy Transplanter

A mechanical paddy transplanter is a self-propelled or walk-behind implement that lifts rectangular mat-nursery seedlings and plants them in a puddled paddy field at uniform spacing. It replaces manual transplanting, which is one of the most labour-intensive operations in Indian rice cultivation.

Function

A pickup fork strips a fixed-volume "plug" of seedlings from a sliding mat-nursery tray and inserts them upright into the puddled mud at a set depth. A reciprocating mechanism repeats this at each step of the machine's forward travel, producing parallel rows of evenly spaced hills.

Design and specifications

Yanmar's walking-type AP4 and AP6 are 4- and 6-row units; the higher-end YR60D is a 6-row riding type. Kubota markets comparable 4- and 6-row walking and riding transplanters. Row spacing is fixed at 30 cm; hill-to-hill spacing is adjustable. The required input is a mat nursery raised on 60 x 30 cm trays, standardised by ICAR-IIRR.

Operation

The puddled field is allowed to settle to a thin film of water. Mat-nursery trays are loaded onto the transplanter and the machine is driven across the field at low speed. A typical 4-row walking unit replaces 8-10 manual labourers per acre. Compared with Drum Seeder Paddy direct seeding, mechanical transplanting allows the nursery and the main field to be prepared in parallel, shortening the field occupation period.

Subsidy and adoption

The implement is on the SMAM subsidy list and is widely owned by Custom Hiring Centres (Agri Machinery Dealer Ecosystem). ICAR-IIRR has standardised the mat-nursery protocol for compatibility with mechanical transplanters; adoption is concentrated in Punjab, Haryana, the Krishna-Godavari delta, Tamil Nadu and West Bengal.

References

AP6 6-Row Rice Transplanter. Yanmar India.
YR60D Riding Transplanter. Yanmar India.