Rice varieties:
1.1 Rice (T.aman varieties):
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Binasail:
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It is a low input
tall variety (135-140 cm) released in 1987, specially suitable for
late transplantation after the flood water recedes which helps the
rehabilitation of the people of flood prone areas.
This variety can
be grown even on natural precipitation. More straw may be obtained
by cultivation of Binasail. Maturity period ranges between 135-140
days.
Moreover, it matures 2-4 weeks earlier if transplantation
is done in optimum time, which also facilitates growing of early winter
crops. Maximum grain yield potential is 5.0 tons/ha (av. 4.2 tons/ha)
if transplantation is done in normal time, while at late transplantation,
grain yield ranges between 3.0 and 3.5 tons/ha. Husking recovery of
grains is more than many other rice varieties. Grains are medium fine
with good cooking quality.
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1.1.2
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Binadhan-4:
It
is also an early maturing variety released in 1998
that takes about 130-135 days to mature. After harvest
of this variety, wheat/oil crops/pulses can be grown
in optimum time.
It is a good variety for increasing cropping intensity.
This variety is more tolerant to major diseases and insect-pests. Maximum
grain yield is 5.5 tons/ha (av. 4.7 tons/ha). Grains are long and slender.
Binadhan-4 produces high quality rice, which is exportable, and its local
market price is higher than many other T. aman varieties. .
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1.1.3
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Binadhan-7:
It is a short duration
and high yielding tranplanted aman variety with good
quality of rice released in 2007..
Crop duration is 110-120 days from seed to seed. As
the variety of early maturing, facilitate rabi crop
cultivation like potato,mustered, wheat etc. after
harvesting the variety in aman season. It is more
tolerant to sheath blight, leaf blight and stem rot. This variety is
also more tolerant to major insect-pests specially to
Brown Plant Hopper (BPH) and hispa. . It produce
grain yield is 5~5.5 tons/ha. Paddy as well as the rice is long and fine. Rice
is tasty and grain are bright color having higher
market price. It can be transplanted little bit late
as it is a short duration variety. It can also be
cultivated in boro ans aus seasons. It is a very good
variety for monga mitigation at northern part of
Bangladesh.
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1.2 Rice (Boro varieties):
1.2.1
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Iratom-24:
It is an early
maturing variety released in 1975 that takes about 140-145 days to
mature during boro cultivation and 125-130 days during
aus cultivation. Earliness facilitates to harvest this crop variety
before early flash flood and also escapes hailstorm. Plants are semi-dwarf
which do not lodge. The variety is moderately resistant to major diseases
and insect-pests. Grains are finer than IR-8. Maximum grain yield potential
is 8 tons/ha (av. 6 tons/ha) in boro season while 4 tons/ha (av.3.5
tons/ha) in aus season.
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1.2.2
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Binadhan-5:
This variety released
in 1998. Its plant is tolerant to lodging and height ranges
between 110-115 cm. The variety takes about 150-155 days
to mature and can produce a maximum grain yield of 8.5 tons/ha (av.
7.0 tons/ha). Grains are long, slender and bright in colour. Farmers can
get more straw by cultivation of Binadhan-5.
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1.2.3
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Binadhan-6:
This variety also
released in 1998. Its plant height is similar to Binadhan-5,
but it bears more tillers and gives a maximum grain
yield of 9.0 tons/ha with an average yield of 7.5
tons, which is higher than hybrid rice. Maturity
period is about 160-165 days, i.e., slightly longer
than Binadhan-5. Grains are medium bold and bright
in colour.
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1.2.4
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Binadhan-8:
Binadhan-8
is a salt tolerant high yielding rice variety which
is released in
2010. It is semi dwarf, early maturing and
medium bold grain rice variety. Binadhan-8 requires
130-135 days to mature. It is moderately resistant
to bacterial leaf blight, sheath blight, brown plant
hopper, stem borer and rice hispa. Under salt
stress, maximum grain yield is 5.5 t/ha (average
4.5-5.5 t/ha) and in non saline area, maximum 9.0
t/ha (average 7.5-8.5 t/ha). This variety is most
suitable in saline areas of Bangladesh and also
other non saline areas.
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