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Manual paddy transplanting

Manual transplanting is the dominant rice establishment method across India, in which young seedlings raised in a wet nursery (Paddy Nursery Management) are pulled and inserted by hand into a saturated puddled field at shallow water depth. The technique remains the agronomic and labour benchmark against which direct-seeded systems are compared.

Principle

Puddling produces a soft, weed-suppressed seedbed; the transplanted seedling re-establishes its root system over 7-10 days and resumes tillering. By skipping the unprotected seedling-to-canopy stage in the main field, transplanting reduces weed competition relative to broadcast establishment and gives more uniform spacing. IRRI's recommended age at transplanting is 15-21 days at the four-leaf stage. Younger seedlings retain higher tiller production potential and give measurably higher yield - long-term experiments document up to about 1 t/ha advantage of 7-day over 21-day transplants.

Implementation

Nursery beds typically occupy 5-10% of the planted field area. Seedlings are pulled with care to preserve roots, bundled and carried to the main field, then inserted in lines or random hills into a saturated puddled bed at 2-3 cm water depth. Planting density is tuned to variety: hybrids and high-tillering open-pollinated lines use 1-2 seedlings per hill; medium- and low-tillering inbreds such as Rnr 15048 use 3-4 seedlings per hill at closer spacing.

Adoption context

Transplanting is the default establishment method across the Krishna-Godavari delta, Telangana and the wider eastern and southern Indian rice belt. It pairs with downstream operations including the tillering-stage spray (Paddy Tillering Spray 25 50 Dat) and boot-stage management (Paddy Panicle Stage Management).

Limitations

The system is labour- and water-intensive: pulling, hauling and inserting seedlings is one of the largest single labour calls in Indian agriculture, and puddling consumes both water and time. Direct-seeded alternatives (Direct Seeded Rice Broadcast, Dry Direct Seeded Rice) are increasingly promoted as labour- and water-saving substitutes, particularly in groundwater-stressed command areas. Mechanical transplanters using mat or dapog nurseries reduce labour for farmers staying with transplanting.

See also: Paddy Nursery Management, Direct Seeded Rice Broadcast, Dry Direct Seeded Rice, Paddy Weed Management, Paddy Tillering Spray 25 50 Dat, Paddy Panicle Stage Management.

References

  1. Transplanting. IRRI Rice Knowledge Bank.
  2. How to prepare seedlings for transplanting. IRRI Rice Knowledge Bank.