EFFECT OF BIO-FERTILIZER ON GROWTH AND PRODUCTIVITY OF SOYBEAN VARIETIES

Abstract

The experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka-1207 during the period from December 2018 to March, 2019 to find out the effect of biofertilizer on growth and productivity of soybean varieties. Two factors were used in the

experiment, viz. Factor A: varieties 4 (V 1

= Shohag (PB-1), V 2 = BARI Soybean-6, V 3 = Binasoybean-1, V 4 = Binasoybean-5) and Factor B: Biofertilizer level 3 (F 0 = No biofertilizer (control), F 1 = Rizobium (Soybean Ishwardi) and F 2 = Rizobium (Soybean Laxmipur)). The experiment was laid out in a Randomized Complete Block Design (RCBD) with two factors and three replications. Variety, biofertilizers and their interaction had significant effect on plant height, number of branch, number of leaf at different DAS, pods plant -1 , pod length, seeds pod -1 , 100 seeds weight, grain yield, straw yield, biological yield and harvest index (%). The highest plant height (18.19, 27.20, 44.45, 54.96 and 57.42 cm, respectively), number of branches plant -1 (2.29, 3.08, 3.58, 4.08 and 4.27, respectively) and number of leaves plant -1 (16.98, 27.71, 37.92, 43.35 and 45.30 cm) were recorded in Binasoybean-5 with the application of Soybean Laxmipur (V 4 × F 2 ) where the lowest plant height (11.54, 17.26, 28.21, 34.88 and 36.44 cm, respectively), number of branches plant -1 (1.60, 2.16, 2.51, 2.86 and 3.00, respectively) and number of leaves plant -1 (16.00, 24.03, 32.10, 37.41 and 39.09, respectively) were found in no biofertilizer (control) application with the variety Shohag (PB-1) (V 1 ) at 25, 35, 45, 55 DAS and at harvest. The highest days to 1 st flowering (49.28 days), number of pods plant -1 (16.98), pod length (5.53 cm), number of seeds pod (3.31) and weight of 100 seeds (14.05 g) was observed in the variety Binasoybean-5 with the application of Soybean Laxmipur (V 4 × F 2 ) and the lowest days to 1 st flowering (34.57 days), number of pods plant -1 (16.00), pod length (3.88 cm), number of seeds pod (2.33) and weight of 100 seeds (9.86 g) were observed in control with the variety Shohag (PB1)

(V 1 × F 0 ). The highest seed yield (1.86 t ha -1 ), stover yield (4.55 t ha ), biological yield (6.55 t ha -1 ) and harvest index (30.49 %) was observed in variety Binasoybean-5 with the application of Soybean Laxmipur (V 4 1 ), stover yield (3.96 t ha -1 × F 2 ), biological yield (5.53 t ha -1 -1 ) and the lowest seed yield (1.56 t ha -1 ) and harvest index (25.34 %) was observed in control with the variety Shohag (PB-1) (V 1 × F 0 ). It has been appeared that Binasoybean-5 with the application of Soybean Laxmipur (V 4 × F 2 ) produces greater yield over treatments still requires further verification under different soybean growing conditions.

-1 × F 0