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Effect of Bradyrhizobium Inoculants on the Growth and Yield of Soybean Varieties Pb-1 and G-2

A. H. M. N. Anwar
Lecturer
Agricultural Science, Government Mujibur Rahman Women’s College, Bogra, Bangladesh

A. K. Podder
Chief Scientific Officer
Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh

M. A. Hasem
Professor
Department of Soil Science, Bangladesh Agriculture University, Mymensingh, Bangladesh

M. A. Islam
Scientific Officer
oil Recourse Development Institute, Regional Laboratory, Rajshahi, Bangladesh

Abstract/ Executive Summary:

Keywords: Bradyrhizobium, Growth, Yield, Soybean, Variety-PB-1 and G-2

Location: Farm of Bangladesh Agricultural University (BAU), Mymensingh

Start Date: 00-01-2000

End Date: 00-05-2000

Program Area: Variety and Species

Commodity: Soybean

Objectives:

To evaluate the performance of different Bradyrhizobium inoculants in soybean variety viz. PB-1 and G-2.
To investigate the interaction effect of Bradyrhizobium inoculants on the growth, yield, and nitrogen content of sovhean varieties PB-1 and G-2.
To study the correlation among different parameters of soybean varieties as influenced by different Bradyrhizobium inoculants.

Methodology:

The experiment was conducted at the Soil Science farm of Bangladesh Agricultural University (BAU) Mymensingh during the period from January to May 2000. The experimental soil was Sonatala silt loam, a member of hyperthermic aeric haplaquept. The experiment was laid out in a factorial experiment in Randomized Complete Block Design (RCBD) with three replications. Each replication was represented by a block which was divided into 7 plots. The total numbers of plots were 42 and the size of each plot was 4 m × 2.5 m. The crop used in this study was soybean (Glycine max L. Merr.). The varieties of the crop was PB-1 (Shohag) and G-2. The study comprised of the seven Bradyrhizobium inoculant treatments such as T₁: Uninoculated, T₂: BINA-SB-1906, T₃: BINA-SB-J43, T₄: BINA-SB-3407, T₅: BINA-SB-J11, T₆: BINA-SB-102 and T₇: BINA-SB-J2. Treatments were randomly distributed within the blocks. Fertilizer such TSP and MP were used as sources for P and K respectively. No nitrogenous fertilizer was used during experimental period. The bradyrhizobial inoculant was prepared in the Soil Microbiology Laboratory, Soil Science Division, BINA,Mymensingh following the method of Vincent (1970). The amount of seed to be shown in each plot was weighed (65 g/plot) on the basis of recommended rate of 65 kg/ha. The seeds for each plot were then taken in a plastic bag. Bradyrhizobium inoculant (liquid) was then added at the rate 15 ml per kg seeds and mixed well with the seeds by shaking the bag thoroughly. For each inoculant, separate plastic bag was used and care was taken to avoid contamination of the inoculants. Seed inoculation was done on the 23 January, 2000 and the inoculated seeds were sown in the field on the same day in afternoon. The spacing between the line was 30 cm and between plants within a line was 5 cm. Intercultural operations were done for ensuring and maintaining the normal growth of the crop. The crop was harvested at physiological maturity on May 13, 2000. The harvested plant materials of 1 sq.m. were allowed to dry in the sun for 3 days. After drying, threshing and processing were done plot wise carefully. Seed and straw yields were recorded plots wise, which were then converted into yield in kilogram per hectare. The data collected from the experiment at different stages of soybean growth and chemical analysis were statistically analyzed using PC MSTAT Software packages. The mean for all treatments were calculated and analysis of' variance of all characters were performed. When the ANOVA was significant (p<0.05) Duncan's Multiple Range Test (DMRT) was used to indicate treatment differences.

Source of Information: J. Soil Nature 4(1):39-48, 2010

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Bradyrhizobium inoculation was beneficial in nodulation, plant fresh weight, dry matter production, plant height, seed yield and hay yield of soybean varieties PB-1 and G-2. The G-2 variety of soybean and bradyrhizobial inoculant BINA-SB-102 gave better results than other variety and other inoculants, respectively. Use of Bradyrhizobium inoculants appear to be an effective method for successful soybean production, which may also improve the soil health saving of costly synthetic chemical fertilizer and keep the soil and environment free from pollution.

Knowledge Management: Journal