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Effect of Biofertilizer and Plant Growth Regulators on Growth of Summer Mungbean

Muhammad Kamrul Islam
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

Shah Md. Asraful Islam
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

Md. Harun-or-Rashid
Breeding Division, Bangladesh Jute Research Institute, Dhaka 1207, Bangladesh.

A. F. M. G. Faruque Hossain
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

Mohammed Mahamodul Alom
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.

Abstract/ Executive Summary:

The experiment was carried out at the field laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh during the period from March 2002 to June 2002 to evaluate the effect of biofertilizer (Bradyrhizobium) and plant growth regulators (GA₃ and IAA) on growth of summer mungbean (Vigna radiata L.). The experiment was laid out by RCBD with three replications and two factors (variety and treatment). There were altogether 12 treatment combinations. Most of the growth parameters such as number of branches plant^-1, number of leaves plant^-1, number of effective nodules plant^-1, number of non-effective nodules plant^-1, root dry weight plant^-1, nodule dry weight plant^-1 was the height due to the application of biofertilizer (Bradyrhizobium). On the other hand, plant height, leave dry weight plant^-1, shoot dry weight plant^-1 and total dry weight plant^-1 was the height due to the application of plant growth regulators (GA₃ and IAA). However, biofertilizer (Bradyrhizobium) and plant growth regulators (GA₃ and IAA) showed statistically identical performance on Crop Growth Rate (CGR) and Relative Growth Rate (RGR). In addition, among the mungbean varieties, Binamoog-5 performed better than that of Binamoog-2 and Binamoog-4.

Keywords: Biofertilizer, Bradyrhizobium, GA3, IAA, Growth, Summer Mungbean

Location: Department of Crop Botany, Bangladesh Agricultural University, Mymensingh.

Start Date: 00-03-2002

End Date: 00-06-2002

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

To evaluate the effect of bio-fertilizer (Bradyrhizobium) and plant growth regulators (IAA and GA₃) on the growth parameters of summer mungbean varieties (Barimoog-2, Barimoog-4 and Barimoog-5).

Methodology:

The experiment was conducted in the field laboratory of the Department of Crop Botany, Bangladesh Agricultural University, Mymensingh in 2002. There were four treatments viz., (i) T₁ = Control (untreated), (ii) T₂ = Bio-fertilizer (Bradyrhizobium), (iii) T₃= Indole acetic acid (IAA) and (iv) T₄ = Gibberellic acid (GA₃). Three mungbean varieties viz., (i) V₁= Barimoog-2, (ii) V₂ = Barimoog-4 and (iii) V₃ = Barimoog-5 were used in the experiment. The land was prepared by three ploughing followed by laddering. The stubbles were removed from the land. The land was laid out by RCBD with three replications and two factors (variety and treatment). There were altogether 12 treatment combinations. So the total numbers of plots were 36 and the size of unit plot was 2x2 m. The block-to-block and plot-to-plot distance was 1 m. The land was fertilized @ 15 kg ha^-1 N, 13 kg ha^-1 P and 13 kg ha^-1 K, while bio-fertilizer plot received only PK at the same rate. The fertilizers were applied at final land preparation. Seed rate was 25 kg ha^-1. Seeds were sown in line sowing method maintaining 3 cm depth. Line to line distance was 25 cm. Liquid Bradyrhizobium mix culture were mixed thoroughly with seeds and placed in a cool dry place and sown in the fixed plots. Solution of 600 ppm IAA and 100 ppm GA₃ was sprayed by hand sprayer at 30 days after sowing. First and second weeding and thinning was done at 15 and 35 days after sowing and plant-to-plant distance was maintained 4 cm. Four plants from each plot were sampled for recording growth and dry mater production at 30, 40 and 50 days after sowing. The collected data were statistically analyzed and the treatments mean were compared by DMRT.

Source of Information: International Journal of Botany, 2(1): 36-41, 2006, ISSN 1811-9700.

Article Link (Online Journal): DOI: 10.3923/ijb.2006.36.41; URL: http://scialert.net/abstract/?doi=ijb.2006.36.41

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Biofertilizer (Bradyrhizobium) and plant growth regulators (GA₃ and IAA) showed statistically identical performance on Crop Growth Rate (CGR) and Relative Growth Rate (RGR). In addition, among the mungbean varieties, Binamoog-5 performed better than that of Binamoog-2 and Binamoog-4.

Knowledge Management: Journal