INFLUENCE OF CORM SIZE AND ZINC ON GROWTH FLOWERING AND YIELD OF GLADIOLUS

Abstract

The experiment was conducted in the Horticulture Farm, Sher-e-Bangla Agricultural University, Dhaka during November 2011 to June 2012.The experiment consisted with two factors. Factor A: Three levels of corm size i.e. C 1 : Small (11-20 g); C 2 : Medium (21-30 g) and C : Large (31-40 g) corm and Factor B: Five levels of zinc as Zn 3kg and Zn 4 0 3 : 0 kg (control), Zn 1 : 1 kg, Zn : 4 kg/ha respectively. The experiment was laid out in a randomized complete block design with three replications. For corm size, highest no. of spike (290700/ha) and corm yield (15.67 t/ha) was from C and lowest no. of spike (251600/ha) and corm yield (12.54 t/ha) was from C . For zinc, highest no. of spike (297800/ha) and corm yield (16.44 t/ha) was from Zn while lowest no. of spike (238500/ha) and corm yield (11.51 t/ha) was from Zn 3 . For interaction effect, highest no. of spike (337800/ha) and corm yield (19.69 t/ha) was from C 0 3 Zn while lowest no. of spike (231100/ha) and corm yield (10.31 t/ha) was from C 3 1 Zn 0 .

2 The highest BCR (2.82) was from C

and lowest (1.90) from C 2 Zn . So, large size corm with zinc at 3kg /ha is the best for growth, flowering and yield of gladiolus.