GROWTH AND YIELD RESPONSE OF SESAME TO THE SQUARE SPACING SYSTEM

Abstract

A field work was carried out at Agronomy field of Sher-e-Bangla Agricultural University, Dhaka-1207, to study the influence of square spacing system on the growth and yield of sesame during March, 2015 to June, 2015. The experiment was laid out in a split plot design with three replications. Two factors were used those were variety (V 1 = Binatil-2, V 2 = BARI Til-3 and V = BARI Til-4) which allocated to main plot and square spacing (S (control) = 30 cm × 5 cm, S S 5 2 = 20 cm × 20 cm, S 3 = 30 cm × 30 cm, S 4 1 = 40 cm × 40 cm and = 50 cm × 50 cm) which assigned to sub-plot. Among the cultivars Binatil-2 well-matched with square spacing and gave the maximum leaf area index (4.44) at 55 DAE, above ground dry matter weight plant -1 (60.23 g) at harvest, capsules plant 1 -1 (124.03), seed weight plant -1 (18.64 g), seed yield (1.03 t ha ) and harvest index (30.63 %) etc. In the case of different square spacing, the widest (50 cm × 50 cm) was given the highest above ground dry matter weight plant -1 (67.24 g) at harvest, capsules plant -1 (141.22) and seed weight plant

(19.79 g) whereas control spacing (30 cm × 5 cm) showed the highest crop growth rate (36.69 g m -2 d -1 ), seed yield (1.79 t ha -1 ) and harvest index (31.33 %). In combination treatment the highest seed weight plant -1 (23.39 g) was taken from Binatil-2 along with the widest spacing (50 cm × 50 cm) while Binatil-2 with control spacing (30 cm × 5 cm) ranked top in seed yield (1.88 t ha -1 ). It is clear from the experiment that wider spacing influenced individual plant with vigorous growth and yield but failed to produce yield per unit area due to lack of optimum plant population.