Abstract:
The experiment was conducted at experimental farm of Sher-e-Bangla
Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207 during the period
from July to December, 2018 with a view to study the effect of transplanting
dates on the growth and yield of aromatic rice varieties. The experiment
consisted of two levels of treatments viz. (A) Two varieties- BRRI dhan34 and
Chinigura; (B) Four transplanting dates: 14th, 21th, 28th August and 4th
September 2018. The experiment was laid out in Randomized Complete Block
Design with three replications. Varietal effect was significant based on all the
recorded agronomic parameters whereas transplanting dates had little effect
on plant height, number of total tillers hill
-1
, dry matter production, filled grain
panicle
-1
, grain yield (t ha
-1
), straw yield (t ha
-1
), biological yield (t ha
) and
harvest index (%) of the crop. Combined effect showed significant variation on
the growth and yield parameters like plant height, number of total tillers hill
,
dry matter production (g hill
-1
), number of effective tillers hill
-1
, panicle length
and weight, number of filled and unfilled grains panicle
-1
-1
, grain yield (t ha
),
straw yield (t ha
-1
), biological yield (t ha
-1
) and harvest index (%). Between two
varieties, BRRI dhan34 produced the highest grain yield (3.12 t ha
), number
of effective tillers hill
-1
(16.67), number of filled grains panicle
-1
(147.35) while
Chinigura produced highest plant height (125.94 cm), dry matter production
(136.12 g) and straw yield (8.98 t ha
-1
). As a variety, the lowest performance in
terms of growth and yield-contributing characters, except straw yield, was
recorded in Chinigura transplanted on 4th September. Among the interaction
treatments, the 21th August showed the highest grain yield (3.92 t ha
) for
BRRI dhan34. 21th August is appeared as a suitable time for transplanting of
aromatic rice in transplanted aman season in Bangladesh.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGRONOMY
