Effect of Soil Enhancer (XXL) on the Growth and Developmental Attributes of Brri Dhan 29 and Hybrid Dhan Taj-1 Cultivars of Rice in Boro Season

The experiment was conducted at the Research Field of Sher-e-Bangla Agricultural University, Dhaka-1207 during November, 2015 to July, 2016. XXL (Soil enhancer) is a complex substance which consists of organic humic acid, fulvic acid, 40 different trace elements and other plant hormones. The present study consisted of two varieties (BRRI dhan 29 and Hybrid dhan Taj-1) and seven different concentrations of soil enhancer (XXL) {Control, 125% (1.88 g/1.5 L), 100% (1.5 g/1.5 L), 75% (1.125 g/1.5 L), 50% (0.75 g/1.5 L), 33% (0.50 g/1.5 L) and 25% (0.38 g/1.5 L)}. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Significant variation was observed in different growth and development contributing characters with XXL. Among the different XXL concentrations, 75% XXL provided the best result. Irrespective of varieties, the highest plant height {92.82 at 80 days after transplanting (DAT)} SPAD value of leaves (32.04 at 80 DAT), tillers hill-1 (15.26 at 80DAT) and leaf area (29.26 cm2) were achieved. With 75% XXL, BRRI dhan 29 and Hybrid dhan Taj-1 provided their shortest duration of maturation of grain (107.3 DAT and 94.33 DAT, respectively). It was 4.1% and 18.41% lower than control, respectively. It meant that BRRI dhan 29 and Hybrid dhan Taj-1 performed well with 75% XXL applied.