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Efficacy of Locally Available Plant Seed Oils Against Pulse Beetle Infesting Blackgram

Md. Shahriar Kobir
Bangladesh Agricultural Research Institute, Gazipur, Dhaka, Bangladesh

Suchana Paul
Bangladesh Agricultural Research Institute, Gazipur, Dhaka, Bangladesh

Md. Harun-Or-Rashid
International Maize and Wheat Improvement Center CIMMYT), Bangladesh

Abstract/ Executive Summary:

Callosobruchus chinensisL. (Pulse beetle) is a major stored grain pest of pulse crops during storage. The research was conducted at the pulses lab of Regional Agricultural Research Station, Jashore during the period from March, 2019 to June, 2019 to study the efficacy of local market available different plant seed oil against pulse beetle (Callosobruchus chinensis L.) infesting blackgram (Vigna mungo). Different plants seed oil viz. T1= Mustard seed oil (3ml/kg), T2= Olive oil (3ml/kg), T3= Coconut oil (4ml/kg), T4= Soybean seed oil (2ml/kg), T5= Control were included as treatments in the study. Treatments were evaluated for their effects on seed damage and weight loss in black gram at different storage intervals i.e., 30, 60, 90 and 120 days after treatment. The treatment mustard seed oil (3ml/kg) and coconut oil (4ml/kg) was found the best treatments for the lowest seed damage and weight loss i.e., 0.37, 5.07 and 0.48, 3.20 respectively, after 30 days. Similar result was found even after 120 days i.e., 2.15, 46.63 and 1.19, 10.01respectively. The third, fourth and least effective treatments are soybean oil (2ml/kg), olive oil (3ml/kg) and control, respectively.

Keywords: Callosobruchus chinensis L., Vigna mungo, Plant extract, Seed damage, Weight loss

Location: At the pulse lab of Regional Agricultural Research Station, Jashore

Start Date: 00-03-2019

End Date: 00-06-2019

Program Area: Pest Management

Commodity: Extract (plant, seed)

Objectives:

The objective of this research work was to find out potentiality of some plant materials over commercially available chemical pesticides to prevent C. chinensis infestation during pulse seed storage. So, the experiment was undertaken to investigate the efficacy of local market available different plant seed oils against pulse beetle (Callosobruchus chinensis)infesting blackgram (Vigna mungo).

Methodology:

The experiment was conducted at the pulse lab of Regional Agricultural Research Station, Jashore during the period from March, 2019 to June, 2019 to study the efficacy of local market available different plantseed oils against pulse beetle (Callosobruchus chinensis) infesting blackgram (Vigna mungo). The research was laid out in a randomized completely block design with three replications. Different plant seed oil sviz. T1= Mustard seed oil (3ml/kg), T2= Olive oil (3ml/kg), T3= Coconut oil (4ml/kg), T4= Soybean seed oil (2ml/kg), T5= Control were included as treatments in the study. The five pairs of adult pulse beetle, C. chinensis Linn. were released in each of the plastic container bearing proposed treated blackgram grains of 500 grams. Plastic containers were then covered with their lids and preserved in room temperature up to 120 days after insect release. Data to be recorded Seed Damage:From the jar of each replicate ten gram seeds were taken after 30 days. From the total number of seeds taken for observation, the damaged seeds were separated. The recorded data were used for calculating the percentage of damaged seed. The same procedure was followed after 60, 90 and 120 days. The following formula was used for determination of percent seed damage as described by (Adams and Schuten, 1978).

Percent seed damage = Number of damaged seed/Number of seeds for observation x 100

Weight Loss: After removing the beetles from each jar the weight of seeds were taken after 30, 60, 90 and 120 days. The percent weight loss was calculated by the following formula. Percent weight loss = w-f/w x 100, Where, w = Initial weight of seeds, f = Final weight of seeds.Then data were analyzed using “R” statistical software (R Core Team, 2018).

Source of Information: J. Biosci. Agric. Res. 22(01): 1823-1828

Article Link (Online Journal): https://doi.org/10.18801/jbar.220119.224

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The study revealed that among the five treatments mustard seed oil @3ml/kg was the best effective treatment to reduce the percent seed damage and weight loss. So,considering the findings of the present research work, on stored blackgram grains mustard seed oil @3ml/kg may be recommended for eco-friendly management of Callosobruchus chinensis Linn.

Knowledge Management: Journal