Production Technologies for Salt Tolerent rice varieties.

CATALYSThelps to Unlock Your Potential
An Institution for Training ,Research and Teaching
Production Technologies for salt
tolerant rice varieties and seed
production to face the future challenge
of salt intrusion in the project areas.
Presenter
Md. Nazim Uddin Mondal

CATALY
SThelps to Unlock Your Potential
,,,
Soil Salinity
Non-saline lands are becoming
saline under 4 circumstances:
i. Flooded by saline water
ii. Drought occurs in pre- monsoon
season
iii. Drought occurs in post-monsoon
season
iv. Irrigation by saline water
(Brammer, 1999).

- The intrusion of salt water into arable land is now
severely affecting rice cultivation in the dry season.
- 2.85 million hectares of land is available in the coastal
belt.
-only 0.83 million hectares of land is cultivable, of which
0.44 million is now salt-affected.
- In 1973 SRDI, 7,50,380hectares (SRDI) of land was
identified as salt-affected.
-In 2009 the amount of salt-affected land stood at 9,50,780
hectares .
- In the map, we can see how salt water is gradually
engulfing a vast amount of land.

● The intrusion of salt water into arable land is now severely
affecting rice cultivation in the dry season.
● Around 2.85 million hectares of land is available in the coastal
belt But only 0.83 million hectares of land is cultivable, of which
0.44 million is now salt-affected.
● According to SRDI, 7,50,380hectares of land was identified as salt-
affected in 1973 and the amount of salt-affected land stood at
9,50,780 hectares in 2009.
● The upward trend in salinity intrusion is hampering crop
production, particularly boro rice in the dry season.
● In the map, we can see how salt water is gradually engulfing a
vast amount of land. In 1973, the amount of salt-affected land was
around 0.7 million hectares which is marked by a blue line, while
salt water covered more than 1.0 million hectares as surveyed in
2009 which is marked by a red line.

To face the problem of salinity to rice
cultivation –grow salt tolerant rice
varieties.
● Bangladesh Institute for
Nuclear Agriculture (BINA)
developed salt tolerant rice
varieties.
● Bangladesh Rice Research
Institute (BRRI) developed
salt tolerant rice varieties.
Salinity

BINA developed rice varieties:
Binadhan-10 : can tolerate up to 12 ds/m of salinity
which can be cultivated in 40-50% of those fallow
lands in both Boro (dry season) and Aman (wet
season) seasons. The farmers can get yield of 5.5-6.5
t/ha in saline land and 7.5-8.5 t/h in non-saline lands
using this variety. The variety possess deep green and
erect flag leaves, trunks and stems are strong, sturdy
and remain erect (no lodging) even in stormy weather.
Disease and pest attacks are very low and the
production cost is same as

(Cont Binadhan 10) the other varieties. Binadhan-10 can
be cultivated in a large part of saline prone areas of 13
coastal districts and more 4-5 million tons of additional rice
can be produced a year. If the Government and private
agencies could extend this variety in a large scale on lands
having salinity up to 12 dS/m, it would enable the farmers
as well as the country to have higher productivity, ensure
food security and improve livelihood of the coastal farming
community. (Ref.Dr. Mirza Mofazzal Islam, and Principal
Scientific Officer, Plant Breeding Division and Head,
Biotechnology Division, BINA).

.
Binadhan-8 :
● Farmers are harvesting this variety in 135-140
days and get a yield of four tons per hectare in
salt-affected areas and above five tons in normal
land.
● It was found that without any salinity, farmers
received around 5.5 tons of rice per hectare,
which required 135-145 days to harvest. But
when the variety was planted in salt-affected
lands (8-12 dsm/metre), farmers received
around three to four tons of rice per hectare,
depending on the degree of salinity.

Bangladesh Rice Research Institute (BRRI)
developed salt tolerant rice varieties.
Developed Variety Characteristics
BRRI dhan47
- Seeding- 15-30 November
- Growth duration 152 days
- Salt tolerant 12-14DS/meter.
- Grain medium bold grain
- Yield 6 ton/ha

BRRI dhan53
- Seeding- 20 June—15 July
- Plant height 106 cm
- Growth duration 125
days
- Salt tolerant 8-10
DS/meter.
- Grain medium fine grain
- Yield 5 ton/ha
BRRI developed salt tolerant rice varieties. (Cont)

BRRI dhan54
- Seeding- 20 June—15 July
- Growth duration 135 days
- Salt tolerant 8-10
DS/meter.
- Grain medium fine grain
- Yield 5.5 ton/ha

BRRIdhan 55
- Aus and Boro
- Seeding, Aus 1-10 April, Boro
15-30 November.
- Growth duration 100 days in -
--- Aus and 145 days in Boro
- Salt tolerant 8-10 DS/meter.
- Grain long and fine
- Yield Aus 4.5 ton/ha, Boro 7.0
Ton/ha

Seed production:
Seed production is very essential for salt
tolerant rice varieties because as new
varieties are selected the seeds are not
available in the market. For seed
production plots technologies are similar
to general cultivation process. However,
the additional works to be done are
discussed.

Rouging of off types:
Rouging off types means removal of rice plants
other than the desired on. This should be done
two tines, one at vegetative phase which means
at growing and another at flowering stage. One
can easily identify the off types by seeing the
plant height of color and size of the panicles.

Rouging of seed plot Rouging of seed plot

Harvest and Store:
Harvesting is very important because at 80% of the
grains maturity only good quality grains come out
during threshing. In the border of the seed plot 1 meter
should not be harvest for seed purpose. The Spike lets at
the panicle base are still a bit green but are already hard.
Thresh immediately to minimize field losses and
deterioration of grain quality by hitting against wood of
other suitable object. Hit the bundle 2 and a half hits of
which two are as usual and one is half of usual force.
Care should be taken not to mix with the other varieties.

Examining moisture content of seeds Storing seeds

Grain Moisture Meters

Sun-dry seeds at 12% moisture which can be
tested by placing the seeds between two
teeth to make Kat sound. Cool the seeds and
preserve in air tight bags. In this context IRRI
Super Bags are recommended for
preservation.

Production Technologies for Salt Tolerent rice varieties.

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