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Eco-friendly Management of Rice Diseases

Md. Amanut Ullah Razu
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Ismail Hossain
Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

Comparative efficacy of BAU-Biofungicide (2%), a product of Trichoderma harzianum, Garlic(Allium sativum) clove extract (5%), Allamanda(Allamanda cathartica) leaf extract (5%), Bion (25ppm), Amistar (0.1%) and Tilt 250EC (0.1%) were evaluated for eco-friendly management of diseases of rice cv. BRRI Dhan-49 under field and laboratory conditions from July 2013 to March 2014. The field experiment was carried out following Randomised Complete Block Design and the laboratory experiments were done following Completely Randomized Design. Brown spots, Narrow brown leaf spot, Bacterial leaf blight and Sheath blight were recorded in the field. The lowest incidence of brown spot and narrow brown leaf spot was observed in plots treated with BAU-Biofungicide and that of bacterial leaf blight was observed in plots sprayed with Allamanda leaf extract. In the case of sheath blight, the lowest incidence was observed in BAU-Biofungicide sprayed plots. The highest grain yield (3680.34kg/ha) was recorded in plots sprayed with BAU-Biofungicide which is 40.56% higher than control. The highest seed germination (%) was recorded when seeds were treated with Garlic clove extract (89.29%) followed by BAU-Biofungicide (87.30%). The prevalence of seed-borne fungi was investigated by the blotter method. The identified seed-borne fungal species were Bipolaris oryzae, Fusarium oxysporum, Fusarium moniliforme, Curvularia lunata, Aspergillus niger and aspergillus flavus. Maximum reduction of seed-borne infection of pathogens was obtained by treating seeds with BAU-Biofungicide (2% of seed weight).

Keywords: BAU; Biofungicide; Plant extract; Rice disease

Location:

Start Date:

End Date:

Program Area: Pest Management

Commodity: Diseases, Rice

Objectives:

The present study was undertaken to find out the efficacy of different eco-friendly management practices of rice diseases for successful crop production.

Methodology:

The field experiment was carried out in the field laboratory of the Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh and laboratory experiments were conducted in the Eco-friendly Plant Disease Management laboratory of the Department of Plant Pathology and Seed Pathology Centre, BAU, Mymensingh during the period from July, 2013 to March, 2014. BRRI dhan49, a high-yielding rice variety was used as a test crop. The field experiment was carried out in Randomized Complete Block Design with 3 replications. The unit plot size was 10 m² (5m×2m). Normal agronomic practices and fertilization were used for the study as per recommended dose of the Fertilizer Recommendation Guide (BARC, 2012).BAU-Biofungicide (2%), Garlic clove extract (5%), Allamanda leaf extract (5%), Bion (25ppm), Amistar (0.1%) and Tilt 250EC (0.1%) were applied as foliar spray for 3 times with 10 days interval at 65, 75 and 85DAT, respectively. Only water was sprayed in case of control plots. Data were recorded on Brown spot, narrow brown leaf spot, Bacterial leaf blight (BLB) and Sheath blight at 70, 80 and 90 DAT, respectively. The disease incidence was calculated following Ansari (1995).

Source of Information: Int J Appl Sci Biotechnol, Vol3(1): 80-88DOI: 10.3126/ijasbt.v3i1.11977

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present experiments were conducted for one season (Aman season) with a single rice cultivar. Hence, it is difficult to draw a sound conclusion on the efficacy of BAU-Biofungicide, Garlic clove extract, Allamanda leaf extract, Bion, Amistar and Tilt 250EC for eco-friendly management practices in controlling rice diseases to obtain higher grain yield. Therefore, this study needs to be carried out under different agro-ecological zones in the country. However, farmers can be advised to use BAU-Biofungicide for seed treatment and field spray to fulfill the requirement of eco-friendly management practices of rice diseases for successful crop production with an increase in yield.

Knowledge Management: Journal