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Effect of BAU-biofungicide and BINA-biofertilizer on Growth and Root-knot (meloidogyne Javanica) Disease of Mungbean

M. Mahbub
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M.U. Sarker
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. Begum
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M.M.R. Khan
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M.U. Ahmad
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The effects of four treatments with BAU-Biofungicide, BINA-Biofertilizer and combination of BAU Biofungicide+BINA-Biofertilizer along with a control were tested against root-knot (Meloidogyne javanica) of three mungbean varieties (Binamoog-2, Binamoog-5 and Binamoog-6). The bio-agents were used as seed treatment. Both the bio-agents and also their combination significantly increased the plant growth in terms of length of shoot and root, fresh weight of shoot and root, nodulation and yield of pods and seeds plant-1 with reduced number of galls and adult females. The plants treated with BAU-Biofungicide performed better than those treated with BINA-Biofertilizer followed by their combination. Binamoog-2 showed higher length of shoot, maximum nodulation and number of pods with the lowest galling, eggmasses and adult females compared to other two varieties. Negative correlations were found between gall numbers and plant growth characters and also between gall numbers and yield components.

Keywords: Bau-Biofungicide, BINA-Biofertilizer, Mungbean root knot.

Location: Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Start Date: 00-11-2007

End Date: 00-03-2008

Program Area: Pest Management

Commodity: Mungbean

Objectives:

1. To see the effect of BAU-Biofungicide (Trichoderma harzianum), BINA-Biofertilizer (Bradyrhizobium sp.) and their combination in controlling root knot disease caused by Meloidogyne javanica, and subsequent plant growth of mungbean.

Methodology:

Sixty earthen pots (30 cm diameter) were filled with sterilized soil (6 kg soil per pot) composing loamy soil, sand and well decomposed cowdung at a ratio of 2:1:1 to raise mungbean plants. Three varieties of mungbean (Binamoog-2, Binamoog-5 and Binamoog-6) were used in this study. Seeds of mungbean and BINA-Biofertilizer (the peat based inocula of Bradyrhizobium sp. for mungbean) were collected from Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh and BAU-Biofungicide (Trichoderma harzianum) was collected from Disease Resistance Laboratory, Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh. Four treatments used in the experiment are: T₀ = Control, T₁ = BAU-Biofungicide, T₂ = BINA-Biofertilizer and T₃ = BAU-Biofungicide + BINA-Biofertilizer. For seed treatment, rice forth was added each in case to moisten the seed coat and then bio-agents were thoroughly mixed with them. In case of T₁, seeds were properly mixed with BAU-Biofungicide at a ratio of 1:40 w/w (Seed : BAU-Biofungicide). In case of T₂, seeds were mixed thoroughly with BINA-Biofertilizer until proper coating of seeds and in T₃ i.e., seed treatment with both the agents, seeds were coated with BINA-Biofertilizer first and then again coated with BAU-Biofungicide. Thus the experiment was designed in two factors Randomized Complete Block Design (RCBD) with five replications. Mature egg masses of root-knot nematode (Meloidogyne javanica) were collected from severely galled root system of Brinjal (Solanum melongena L.) previously inoculated with the single egg mass of M. javanica. For inoculation, reddish brown mature egg masses were collected from infected roots with fine forceps and then placed in a petridish containing 5 ml of sterile water to avoid desiccation. After 41 days of planting, each mungbean plant was inoculated with the eight egg masses collected from brinjal plants. On each side of the plant, 4 egg masses were placed near the base (root-region) of the seedlings opening the soil. After 50 days of inoculation, plants were carefully uprooted from the pots, washed with tap water gently and carefully and different parameters were studied.

Source of Information: J. Agrofor. Environ. 2(2): 33-37, 2008; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Both the bio-agents and also their combination significantly increased the plant growth in terms of length of shoot and root, fresh weight of shoot and root, nodulation and yield of pods and seeds plant-1 with reduced number of galls and adult females. The plants treated with BAU-Biofungicide performed better than those treated with BINA-Biofertilizer followed by their combination. Binamoog-2 showed higher length of shoot, maximum nodulation and number of pods with the lowest galling, eggmasses and adult females compared to other two varieties. Negative correlations were found between gall numbers and plant growth characters and also between gall numbers and yield components.

Knowledge Management: Journal