| dc.description.abstract | An experiment was carried out at the Experimental Field of the Department of Agronomy and
Haor Agriculture, Sylhet Agricultural University, Sylhet-3100 under the AEZ 22 (Northern &
Eastern Piedmont Plains) in Kharif-II (Aman) season during the period of July 2013 to November
2013 to evaluate the effect of number of seedling hill
and spacing on the growth and yield of
hybrid rice line Bio-453. The experiment was laid out in a split plot design with three replications.
Two levels of seedling hill
-1
) and five levels
of plant spacing viz. Sp1 (15 cm × 15 cm), Sp2 (15 cm × 20 cm), Sp3 (20 cm × 20 cm), Sp4 (20 cm
× 25 cm) and Sp5 (20 cm × 30 cm) were the treatments of this study. Result obtained from
experiment revealed that number of seedling hill
-1
viz. NS1 (1 seedling hill
-1
) and NS2 (2 seedlings hill
-1
had no significant influence on growth
parameter like plant height at different days after transplanting (DAT) while another growth
parameter like number of tiller hill
-1
at different days after transplanting (DAT) was significantly
influenced. Some of yield contributing characters were also significantly influenced by number of
seedling hill
-1
-1
. Single seedling
hill
like number of total tiller hill
-1
and number of effective tiller hill
-1
-1
) might be attribute by the combined effect of number
of total tiller hill
produced highest grain yield (8.38 t ha
-1
-1
and 1000-grain weight.
Plant spacing had significant effect on both growth parameters and different yield contributing
characters under the study. The closest plant spacing 15 cm × 15 cm (Sp1) produced maximum
grain yield (8.93 t ha
, number of effective tiller hill
-1
, filled grain panicle
-1
and spacing had
significant influences on grain yield. The combination of 1 seedling hill
-1
). Interaction effect between number of seedling hill
-1
(NS1) along with the
spacing of 15 cm × 15 cm (Sp1) produced significantly highest grain yield (9.43 t ha
-1
) and also
produced maximum biological yield (25.70 t ha
-1
(NS1)
along with the spacing 15 cm × 20 cm (Sp2) and 1 seedling hill
-1
). The combination of 1 seedling hill
-1
(NS1) along with 20 cm × 20 cm
(Sp3) produced statistically similar grain yield (9.26 t ha
-1
, respectively) to that of
Sp1. Grain yield progressively reduced with increase of spacing at both 1 and 2 seedlings hill
-1
-1
and 8.86 t ha
.
The lowest grain yield (7.00 t ha
-1
(NS1) along with the
spacing 20 cm × 30 cm which was statistically similar to that of 7.36 t ha
-1
) was obtained from 1 seedling hill
-1
and 7.56 t
ha
-1
-1
, 7.96 t ha
-1
(NS1) along with the spacing 20 cm × 25 cm
(Sp4), 2 seedling hill
obtained from the combination of 1 seedling hill
-1
(NS2) along with the spacing 20 cm × 30 cm (Sp5), respectively.
-1
(NS2) along with the spacing 20 cm × 25 cm (Sp4)and 2 seedlings hill
-1 | en_US |
