EFFECT OF PLANTING GEOMETRY AND SOWING TIME ON GROWTH AND PRODUCTIVITY OF MUSTARD

Abstract

The experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka to find out the effect of planting geometry and sowing time on growth and productivity of mustard during the period from October 2019 to March 2020. The experiment consisted of two factors; Factor A: Three sowing times viz., S 1 : Sowing on 25 th October, S 2 : Sowing on 10 th November and S : Sowing on 30 th November, 2019; Factors B: Four planting geometries viz., G = Random geometry, G 2 = 25 cm × 5 cm, G 3 = 30 cm × 5 cm and G = 35 cm × 5 cm. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Plant height, leaves plant -1 , branches plant -1 ,

4 1 3 dry matter weight plant , siliquae plant -1 , seeds siliqua -1 , length of siliqua, 1000 seed weight, seed yield, stover yield, biological yield and harvest index were compared among the combinations and individual effects of treatments. Results indicated that, sowing time and planting geometry had significant influence on most of the growth, yield and yield contributing characters of mustard. The maximum seed yield (2.16 t ha -1 ) was obtained from S and the minimum seed yield (1.68 t ha -1 ) was obtained from S . In the case of planting geometry, the maximum seed yield (2.00 t ha -1 3 ) was obtained from G and the minimum seed yield (1.82 t ha -1 ) was obtained from G 1 3 . Thus, it was revealed that when mustard was sown on 10 th November with 30 cm × 5 cm geometric pattern resulted with the highest seed yield (2.24 t ha -1 ). The lowest seed yield (1.58 t ha -1 ) was obtained from the 30 th November sowing with random geometry. So, it may be recorded that mustard sowing on 10 th November with 30 cm × 5 cm planting geometry (S ) could be the most suitable combination for the potential yield improvement in Bangladesh.