INFLUENCE OF LIMING AND FOLIAR APPLICATION OF GA3 ON GROWTH AND FLOWERING OF GLADIOLUS

Abstract

An experiment was conducted to evaluate the growth and flower production of gladiolus as influenced by lime and GA at Horticulture Farm, Sher-e-Bangla Agricultural University, Dhaka during November 2014 to March 2015. The experiment consisted of two factors where Factor A: three levels of lime i.e. L 3 : 0, L 1 : 2.5 and L 2 : 5.0 t ha -1 and Factor B: four levels of GA 3 viz., G : 200 and G 3 0 : 250 ppm respectively. The experiment was laid out in Randomized Complete Block Design with three replications. Liming and GA showed significant variation on most of the parameters. In case of lime, the highest no. of spike -1

-1

and the lowest

-1

-1

0 . For GA the highest no. of spike

-1

-1 3

while the lowest

-1

-1

0 2 : 0, G 1 . For interaction effect the highest no. of spike -1

-1

1 G while the lowest

-1

-1

0 G 0 2 . The highest benefit cost ratio (2.64 1 G 2 and the lowest 2 G 0 . So, 2.5 ton lime ha -1 with 200 ppm GA 3 was found best for growth and flowering of gladiolus. 1 0 : 150, G 3 2