| dc.description.abstract | An experiment was carried out at the Agronomy Research Field, Hajee Mohammad
Danesh Science and Technology University, Dinajpur, Bangladesh during Aman season
(June to December) of 2016 to investigate the effect of gibberellic acid on yield and yield
contributing characteristics of some varieties of aromatic rice. The experiment included
three varieties namely Tulsimala , Kalizira, and Kataribhog with three gibberellic acid
level GA1= Control, GA2 = 100 ppm and GA3= 200 ppm ha-1
.The experiment was
conducted in a Randomized Complete Block Design/space with three replications.
Except few parameters, the yield, yield contributing characteristics were significantly
influenced by the gibberellic acid levels and aromatic rice varieties. Kataribhog was
found significantly superior to Kalizira and Tulsimala. The highest grain yield (2.50 t ha1
) of Kalizira was recorded from @ 100 ppm ha-1
gibberellic acid. Again the effect of
interactions of variety and gibberellic acid were statistically significant on several yield
contributing characteristics. The cultivar Kataribhog (V3), @ 200 ppm ha -1
gibberellic
acid produced the tallest plant (159.89 cm), effective tillers hill (18.16) and straw yield
(4.42 t ha -1
). The application of gibberellic acid/space @ 100 ppm ha -1
produced the
longest panicle (22.85 cm), grains panicle-1
number (162.44), 1000 grain weight (13.81
g), grain yield (2.75 t ha -1
) biological yield (7.15 t ha -1
), and harvest index (38.46
%).The result indicates that Kataribhog (V3) with the application of @ 100 ppm ha1
/space could give the highest yield of aromatic rice. | en_US |
