RESPONSE OF BLACKGRAM VARIETIES AS AFFECTED BY DIFFERENT PLANT SPACING (VIGNA MUNGO)

Abstract

A field experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka during the period from March to June 2021 in Kharif I season, to study the response of blackgram varieties and different plant spacing. The experiment consisted of two factors, and followed split plot design with three replications. Factor A:Blackgram varieties (3)viz:V 1 -BARI Mash 2, V 2 -BARI Mash 3, V -BARI Mash 4 and Factor B: Different plant spacing (4) viz: S 1 = Broadcasting, S 2 3 = 15 cm × 10 cm, S = 20 cm × 20 cm, and S = 30 cm × 15 cm. Experimental results revealed that different varieties and plant spacing significantly influenced the yield and yield contributing parameters of blackgram. In case of different blackgram varieties the maximum seed yield (1.49t ha- 1 1 4 ) was recorded from BARI Mash-3 (V ) was obtained from V 1 2) 3 treatment and lowest seed yield (0.96 t ha treatment (BARI Mash-2).The highest yield with BARI Mash-3 (V 2 ) was attributed due to the highest pods plant -1 (6.52), pod length(5.22 cm), seeds pod -1 (7.78), 1000-seed weight(42.76 g), biological yield (3.25 t ha ) and harvest index (45.53 %).However in case of different plant spacing the seed yield ranges between (0.92 -1.46 t ha -1 ). The highest seed yield (1.46 t ha -1 ) was recorded in S 4 (30 cm × 15 cm) treatment which was achieved with maximum pods plant (6.67), pod length(5.36 cm), seeds pod -1 (7.40) and 1000-seed weight(44.11 g).In case of combination, cultivation of BARI Mash-3 (V ) along with 30 cm × 15 cm spacing (S 4 2 ) affected plant growth and yield-contributing characteristics, leading to the maximum seed yield (1.80 t ha -1 ) compared to other treatment combinations. Therefore, it is suggested that cultivation of BARI Mash-3 along with 30 cm × 15 cm spacing (V 2 S ) could be as optimum in crop management for maximum yield harvest in blackgram.