DIRECT SEEDING OF RICE

1. DIRECT SEEDED RICE
Abeer Ali, roll number: 60071, Division of fruits and horticultural technology
INTRODUCTION
1]Crop matures 7-8 days earlier than transplanted rice.
2]when labour shortage Is more especially during transplanting period.
3]Reduces labour cost.
4]Reduce water use.
VARIETIES– bala ,cauvery ,nagina 22& pusa 2-21.
ADVANTAGES OF DIRECT SEEDED RICE OVER
TRANSPLANED RICE
Direct seeding of rice refers to the
process of establishing a rice crop
from seeds sown in the field rather
than by transplanting seedlings from
the nursery.
Direct seeded rice is of two kinds.
1. Dry rice cultivation
2. Wet rice cultivation.
DIRECT SEEDED RICE
• Faster and easier crop establishment
• Less labor need (1 -2 vs. 25 -30 for TP)
• Earlier crop maturity by 7 -10 days
• More efficient water use & higher tolerance to water stress
• Reduced cost: US$ 60 -80 per ha
• Less methane emission: DDS < WDS < TP IRRI: Rice Production Course
DIRECT SEEDING: BENEFIT
• Rice growing conditions in different
regions largely influence the
system of cultivation.
• The main factors are location of
land, intensity and distribution of
rainfall, type of soil, class of rice,
season, irrigation resources and
availability of Labour.
• Rice cultivation is made in two
types
One is ‘direct seeded rice’ .
Another is ‘transplanted rice’
• Good LP & leveling
• Furrows to drain water
• (WDS)
• Saturated soil (WDS) &
moist soil (DDS) for first
7 -10 days
• Varieties: early seedling
vigor, fast canopy
development, non-lodging
• Quality seed
• Effective weed control:
cultural, mechanical, herbicides
DIRECT SEEDING REQUIREMENTS
• The rice crop is grown under wet (season) condition
right from sowing to harvest.
• The field is repeated ploughed with 5-7 cm standing
water (puddling).
• Rice fields with sandy to sandy loamy soils are
ploughed in summer and again ploughed once
or twice after letting in water
In direct seeding under puddled condition
• The field is prepared and puddled as like in
transplanted rice.
• Puddling offers a number of advantages.
• All weeds are killed and buried in to the soil
• Infiltration rate of water is reduced
• Germinate the seeds easily in soft mud.
• Plant population becomes more assured
• Availability or Fe and P increases and N is
conserved better.
• After puddling, the field is leveled, excess water is
Drained out and then pre-germinated seeds are sown
• Drum seeders are generally practiced
• Pre-emergence application of Pretilachlor
@ 0-75 kg ha-1 on 8 DAS or Pretilachlor + safener
(Sofit) @ 0.45 kg ha-1 followed by one hand
weeding after 30-35 DAS are recommended practices
for weed management.
WET SYSTEM OF CULTIVATION
Direct seeding can be adopted profitably in flooded rice where the size of
plots for rice cultivation are small and perfect leveled ensuring good control
of irrigation water and soils are light
CONCLUSION
• Followed in uplands where there is less
possibility for water stagnation.
• Uplands are characterized by aerobic soil.
• It depends upon rainfall for its water
requirement.
• It is mainly confined to tracts that don’t
have adequate irrigation facilities.
• The land is ploughed sufficiently during
summer to get the good tilth and sowing of rice
is usually done in immediately after onset of
monsoon.
• Under this system of cultivation, the field is
prepared and dry rice sowing is made.
• The crop is treated as a dry crop for about two months (or until receiving monsoon rains)
after seeding and is then, treated as wet crop when monsoon gets intense.
DRY RICE CULTIVATION
REFERANCE:
https://slidetodoc.com/rice-nursery-and-early-crop-
management-v-balasubramanian/
http://www.knowledgebank.irri.org/step-by-step-
production/growth/planting/direct-seeding