Vol. 5, Issue 11, Part D (2019)

Abstract
The experiment was conducted at Regional Spices Research Centre, Gazipur during April to February, 2017-2018 and 2017-2018. Five seed rhizome cut consisted of one bud viz., S₁=5±2 g, S₂=10±2 g, S₃=15±2 g, S₄=20±2 g and S₅=40±2 g were used in the experiment. Unit plot size was 5.0 m × 1.0 m. Seed rhizome were planted in two row maintaining inter and intra row spacing of 50 cm and 25 cm respectively. The experiment was laid out in Randomized Complete Block Design with three replications. The rhizomes were planted on April 18, 2016 and April 20, 2017 and the crop was harvested on February 22, 2017 and 2018, respectively. The lowest days (36) was recorded for 1^st emergence in 2016-2017 and that of 42 days for 50% emergence in 2017-2018 when maximum rhizome cut (40±2 g) was used as planting material. Different weighed rhizome cut had a significant effect on different yield attributes of ginger was found in 2016-2017. The highest plant height (53.87 cm), maximum number of leaves (145), tiller (15.67), primary rhizome (4.83) and heaviour secondary rhizome (250.64 g) and clump (335.5 g) was recorded in S₄ (20±2 g). But significant highest weight of primary rhizome was recorded in S₅ (68.30 g), grown from 40±2 g followed by 20±2 g (65.33 g). Similarly, in 2017-2018, maximum number of leaves (175.10) was counted in S₄ (20±2 g). Maximum number of tiller / hill (15.17) was recorded in S₅ (40±2 g) followed by S₄ (15.00). The maximum number of primary rhizome (5.47 and 5.17) was obtained from S₄ and S₅ treatments_{, ­}respectively although no significant variation was found between S₄ (20±2 g) and S₅ (40±2g). Significant highest weight of primary (67.97g), secondary (301.70 g) and rhizome /clump (362.89 g) was recorded in S₄ grown from 20±2 g followed by 40±2 g. The highest yield (23.54 and 25.10 t/ha) was recorded from the plants grown from 20±2 g weighed rhizome cut in 2016-2017 and 2017-2018, respectively. The highest gross return (TK 14, 12,400/ha) and net return (TK 9, 62,022/ha) was recorded in treatment S₄ (20±2 g). But the maximum BCR (4.05) was recorded in treatment S₁=5±2g in 2016-2017 while the highest gross return (TK 15, 06,000/ha) and net return (TK 9, 96,340/ha) with maximum BCR (2.95) was obtained from treatment S₄ (20±2 g) in 2017-2018.