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Development of Bio-control Based Management Package for the Major Insect Pest of Soybean

Rabiul Islam
Oilseed Research Center, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh

Md. Mosiur Rahman*
Pulses Research Sub-center, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh

Saiful Islam
Biotechnology Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh

Md. Abdur Rajjak Choudhury
Department of Entomology, Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Md. Samsuzzaman
Integrated Agricultural Productivity Project, Regional Agricultural Research Station, Burirhat, Rangpur-5400, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the farmer’s field in Nokahali district of Bangladesh. There were four management packages viz. IPM Package 1: Hand Picking + Pheromone trap + Bracon hebetor + Trichograma chilonis + Bio neem Plus 1EC, IPM Package 2: Hand Picking + Pheromone trap + Bracon hebetor + Trichograma chilonis + Tracer, Package 3: Farmer’s practices: Nitro 505 EC and Package 4: Untreated control. The highest infestation reduction of pest complex (common cutworm, leaf roller, pod borer and hairy caterpillar) was 87.36 in IPM Package 2 treated plots i.e. hand picking + Sex pheromone of Sodoptera litura + release of Bracon hebetor, Trychogramma chilonis and Tracer. The IPM package 2 produced the highest seed yield (2.01 t/ha) with calculated the highest net return (Marginal Benefit Cost Ratio). Therefore, IPM pakage 2 viz, Hand picking + Pheromone trap of Spodoptera litura + release of bio-control agent was found effective (more than 87% infestation reduction) for managing pest complex (common cutworm, leaf roller, pod borer and hairy caterpillar) in soybean.

Keywords: Bio-control agents, Management package, Major insect pest, Economic analysis

Location: Farmer’s field in Nokahali district of Bangladesh

Start Date:

End Date:

Program Area: Pest Management

Commodity: Soybean, Biological

Objectives:

The study was undertaken to develop the most effective management option for managing these pests.

Methodology:

Experimental site: The experiment was conducted at the farmer’s field in Nokahali district of Bangladesh during growing season of 2014-2015. It is located in the Subornochar area where soybean is the main crop in this season.

Planting materials: Soybean [Glycine max (L.) Mirrill. var. BARI Soybean 5] was used as the planting material in this experiment. Seeds were collected from Oilseed Research Centre, Bangladesh Agricultural Research Institute. It is a popular variety for its high potentiality and also diseases tolerance to specially Soybean Yellow Mosaic Virus (SYMV). IPM Packages Four insect pest management packages were used in this experiment. The packages were IPM package 1: Hand picking of infested leaf with larvae + use of sex pheromone of S. litura + release of Bracon hebetor @ 1 bunker/ week/ha and Trichogramma chilonis and azadirachtin (Bioneem plus 1 EC @1 ml/L), IPM package 2: Hand picking of infested leaf with larvae + use of sex pheromone of S. litura + release of Bracon hebetor @ 1 bunker/ week/ha and Trichogramma chilonis and Spinosad (Tracer 0.4 ml/L), IPM package 3: Farmer’s practice (use of Nitro @ 2ml/l) and IPM package 4: Untreated control.

Cultivation procedure Seeds of the soybean (var. BARI Soybean 5) were sown on 18 February, 2015 in 3 m × 4 m plots with the spacing of 30 cm x 30 cm following randomized complete block design with three replications. Fertilizers and other intercultural operations were done uniformly as per recommendation of Oilseeds Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh. All fertilizers were applied as basal during final land preparation. Weeding, irrigation and insecticides were sprayed as and when required to maintain an optimum growth condition for the crop. It was harvested after 95 Days after sowing when the pods were turned to yellowish color and leaves were fallen down.

Data taken Number of Spodoptera adult was collected from the pheromone trap in every 7 days intervals from 1^st week March to 3^rd week of April 2015. Percent leaf infestation was counted from the different treatments 7 days (after spray) intervals during crop growing season in 3 frequencies. The crop was harvested on 1^st week of May, 2015. Yield data and benefit cost ratio (BCR) of the packages applied were calculated. Statistical analysis: Data were analyzed statistically using MSTAT software. Means were separated by DMRT test at 5% level of probability.

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

IPM package 2 viz, Hand picking + Pheromone trap of Spodoptera litura + release of bio-control agent was found effective (more than 87% infestation reduction) for managing pest complex (common cutworm, leaf roller, pod borer and hairy caterpillar) in soybean crop and also observed highest net income. Therefore, this package can be recommended for the effective management of major insect pest of soybean.

Knowledge Management: Journal