Rainfed rice - IRRI books - International Rice Research Institute

11. For medium-duration varieties,
apply N in three splits: 50% 20
days after seeding (DAS), 25% at
late tillering and the rest at
panicle initiation (PI).
Mix or incopporate fertilisers into the soil
Crop Establishment Practices in Rainfed Rice Cultivation
Incorporate the topdressed N into the soil
Direct sowing in wet soil
Sprouted seeds are usually sown as a contingency measure on wetlands
after flood occurs. When a flood occurs, seedlings are damaged. Therefore,
direct seeding is the only option for such situations.
THE METHOD
1. Plough/puddle and level the land properly.
2. Apply a full dose of P 2 O 5 and K 2 O, as basal.
3. Level the land by light laddering.
4. Allow the soil particles to settle before sowing if the soil is muddy.
5. Soak the seeds of short-duration varieties for 24 hours and incubate for
48 hours.
6. Sow the sprouted seeds in lines by an 8-row drum seeder at 60-70 kg/ha
or by other means.
7. If line sowing is not possible, broadcast seeds at 60-80 kg/ha.
8. Complete weeding before topdressing of nitrogen.
9. Topdress 50% N 20 to 25 days after sowing and the rest at panicle
initiation for short-duration varieties.
10. For medium-duration varieties, apply N in three splits (50% 20 DAS,
25% at late tillering and the rest at PI).
11. For topdressing of N, mix the fertiliser with farmyard manure (FYM) in a
1:10 ratio and incubate them for 48 hours. Broadcast in the field as
incorporation into the soil is not possible. This practice helps reduce
nitrogen losses through volatilisation.
101