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Effect of Integrated Use of Rhizobium Inoculum and Phosphorus Fertilization on Nodulation, Growth, and Yield of Soyabean Cv. BINAsoybean-2

Kamrul Hasan
Department of Agriculture, Noakhali Science and Technology University, Noakhali-3814, Bangladesh

Shohrab Hoshain
Department of Agriculture, Noakhali Science and Technology University, Noakhali-3814, Bangladesh

Tamanna Sharmin
Department of Agriculture, Noakhali Science and Technology University, Noakhali-3814, Bangladesh

Md Golam Rabbani
Research Cell, Noakhali Science and Technology University, Noakhali-3814, Bangladesh

Md Saiful Kamal Azad
ACI Logistics Limited, Bangladesh

Md Rashedur Rahman
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Partha Sarathi Kar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The experiment was carried out to investigate the effect of rhizobium inoculum and phosphorus fertilization on nodulation, growth, and yield of soyabean cv. Binasoybean-2 at the area of Chamberkella, East Subarnachar Upazila, Noakhali, Bangladesh, from mid-January to first week of May 2018. Four levels of Rhizobium inoculation viz: 0, 25, 50 and 75 g kg^-1 and four levels of phosphorus viz: 0, 18, 36 and 54 kg P ha^-1 were applied. The experiment was laid out in a randomized complete block design (RCBD) with three replications. The effect of interaction of different combinations of Rhizobium inoculation and phosphorus rates showed regular trend, although their effects on some of studied growth, and yield parameters were insignificant but most of the growth and yield parameters were significant. Among sixteen treatment combinations the highest grain yield (2.217 t ha^-1) was obtained from the treatment combination of 50 g kg^-1 Rhizobium inoculation and 36 kg ha^-1 phosphorus which was statistically identical with 50 g kg^-1 Rhizobium inoculation with 18 kg ha^-1, the lowest yield (1.367 t ha^-1) was recorded with control treatment.

Keywords: Binasoybean-2, Phosphorus, Rhizobium, Yield

Location: Noakhali Science and Technology University, Bangladesh

Start Date: 00-01-2018

End Date: 00-05-2018

Program Area: Crop-Soil-Water Management

Commodity: Bio fertilizer

Objectives:

To evaluate the interaction effect of Rhizobium inoculation and phosphorus fertilization on nodulation, growth and yield of soybean.

Methodology:

The field experiment was carried at the research field of Noakhali Science and Technology University, Bangladesh from a period from January to May 2018. The experiment comprised of two factors. Factor A included four levels of Rhizobium inoculation viz., 0 (I0), 25 (I1), 50 (I2) and 75 (I3) g kg^-1 seed and factor-B included four levels of phosphorus 0 (P0), 18 (P1), 36 (P2) and 54 (P3) kg ha^-1. The experiment was laid out in randomized complete block design (RCBD) with three replications. There are 48 plots and size of each plot was 10 m² (2.5 m× 4 m). The experimental land was first opened with a power tiller. Later on, the land was prepared by ploughing and cross-ploughing and subsequently leveled by laddering. The fertilizers applied in the soil during final land preparation were urea, MoP, Gypsum and Boric acid @ 55, 100, 80 and 10 kg ha^-1. TSP fertilizer was applied as per the treatments to supply phosphorus nutrient to the crop. The seeds of soybean were planted in the line sowing method maintained 3-4 cm depth on 15 January using a spacing of 30 cm × 5cm. Intercultural operations such as weeding and irrigation were done as and when necessary. For data collection, five hills were selected at random from each plot and tagged for measuring plant height and five hills were selected for counting the number of nodules plant^-1 at 45, 60 and 75 DAS. To determine dry weight the sample plants were first air dried for 5-6 hours. Then the samples were packed in labeled brown paper bags and dried in the oven for 24 hours until constant weight was reached. After oven drying, the samples were weighed by using electric balance. Five hills that are randomly selected for measuring growth parameters were used to record the data on yield contributing characters. Grain yields were recorded plot wise and converted to ton ha^-1. Data recorded for growth and yield parameter were compiled and tabulated in proper form for statistical analysis. Collected data on different parameters were significantly analyzed and the mean differences were compared by DMRT (Gomez and Gomez, 1984).

Source of Information: Res. Agric., Livest. Fish.8(1): 9-17, April 2021

Article Link (Online Journal): DOI: https://doi.org/10.3329/ralf.v8i1.53261

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Phosphorus fertilization and rhizobium inoculation has a great impact on the nodulation and seed yield of soybean. From above results and discussion, it can be concluded that integrated use of Rhizobium inoculation at a rate of 50g kg^-1 soybean seed with phosphorus fertilization at a rate of 36 kg ha^-1 could be the best possible combination for producing maximum nodulation as well as giving the highest seed yield of soybean cv. Binasoybean-2.

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