• Aden Eid Qalombi
• Md. Shafiqul Islam Sikdar
• Md. Sohidul Islam
• Ilyas Mohamed Osman

An experiment was conducted at the Agronomic research field, Hajee Mohammad Danesh Science and Technology University, HSTU during the period from July to December 2017 to study the effect of Gibberellic Acid (GA3) on the growth and yield of aromatic rice varieties. The experiment was laid out Randomized Completely Block Design (RCBD) with three replications. The experiment was conducted with two factors; Factor A- Gibberellic acid levels, (G1=0 ppm, G2=75 ppm and G3=150 ppm) and Factor B- Aromatic rice varieties (V1=BRRI dhan34, V2= Kataribhog, V3=Kalizira, and V4= Tulshimala). The results revealed that the plant height (cm), number of effective tiller, number non effective tiller, number of panicle, number of filled grain panicle-1 , number sterile grain panicle-1, one thousand grain weight (g), grain yield (t ha-1), straw yield (t ha-1), biological yield (t ha-1), harvesting index (%) were significantly influenced by the treatments. Among the treatments studied, G2 was the best performance treatment; produced highest values were obtained from G2 (75 ppm) treatment. GA2 produced the maximum grain yield (1.58 t ha-1), and GA3 found that produced the maximum straw yield (3.45 t ha-1), while the maximum grain yield (3.15 t ha-1) and straw yield (3.28 t ha1) was the best performance variety V1 (BRRI dhan34).whereas the lowest values for all parameters were recorded from G1 (control treatment). Again, interaction effect between varieties and Gibberellic Acid V1 (BRRI dhan34) with G2 (75 ppm) produces the maximum grain yield (3.30 t ha-1) and the highest straw (3.76 t ha-1) produced G3 (150 ppm) with V3 (Kalizira). Present study indicates that V1(BRRI dhan34).and G2 (75 ppm) and their combination produced the highest values for maximum parameters. Thus, GA3 (75 ppm) would be successfully used for commercial rice production. However, it is important to repeat the experiment over locations and seasons before final recommendation.

Rice, Gibberellic Acid, Growth, Yield

"EFFECT OF GIBBERELLIC ACID (GA3) ON THE GROWTH AND YIELD OF AROMATIC RICE VARIETIES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 1, page no.e543-e553, January-2022, Available :http://www.jetir.org/papers/JETIR2201475.pdf

"EFFECT OF GIBBERELLIC ACID (GA3) ON THE GROWTH AND YIELD OF AROMATIC RICE VARIETIES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 1, page no. ppe543-e553, January-2022, Available at : http://www.jetir.org/papers/JETIR2201475.pdf