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Effect of Some Botanicals and Bio-control Agents in Controlling Brinjal Shoot and Fruit Borer (leucinodes Orbonalis Guen) in Brinjal

MD. NASIR UDDIN
MS. Student, Reg. No. 04-01464
DEPARTMENT OF ENTOMOLOGY, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA 1207

Abstract/ Executive Summary:

The experiment was conducted to study the effect of some botanicals and bio-control agents in controlling Brinjal Shoot and Fruit Borer during the period from April to October 2009. The plants treated with T₁ treatment (Neem oil @ 4 ml/L of water at 7 days interval), resulted significantly lowest percentage of infested shoot &fruit compared to those of other treatments during early, mid and late fruiting stage. Significantly the highest yield was obtained in plant under the treatment T₁. The treatments T₂ (Neem seed kernel @ 300g/L of water at 7 days interval) and T₃ (Trichogramma evanescence @ 0.1g/6 m2 after 7 days interval) also gave more or less similar result as treatment T₁. The yield contributing characters found highest in T₁ treatment for length and girth of fruits, weight of individual fruit, edible portion, non edible portion and yield per hectare. The highest Benefit Cost Ratio was found in T₁ may be due to the minimum infestation and cost compared to the other treatment components and the highest yield was produced in this treatment. Length, girth of healthy fruits, individual fruit weight and edible portion of fruit showed significant positive relation with yield of brinjal.

Keywords: Botanicals and bio-control agents, Brinjal shoot, Fruit borer, Brinjal

Location: The central farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka

Start Date: 00-04-2009

End Date: 00-10-2009

Program Area: Pest Management

Commodity: Brinjal

Objectives:

1. To evaluate the effectiveness of selected botanicals and bio-control agents against brinjal shoot and fruit borer;

2. To find out a suitable control option which comprising with botanicals and bio-control agents for suppression of brinjal shoot and fruit borer;

3. To analyze the benefit cost ratio of various botanicals and bio-control agents in the present study.

Methodology:

The experiment was conducted at the central farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka

Planting material

BARI Begun-8 (Plate 1) was used as the test crop of this experiment.

Treatments of the experiment

The experiment consists of the following management practices: T_1: Neem oil @ 4ml/L of water at 7 days interval T₂: Neem seed kernel @ 300g/L of water at 7 days interval T_3:Trichogrammaevanescense@ 0.1g/6 m2 at 7 days interval T₄: Bacillus thuringiensisserovarkurstaki @ 1.5ml/L of water at 7 days interval T_5: Bacillus thuringiensisserovarkurstaki @ 1ml suspension /L of water + Safeclean 2.5 ml/L of water at 7 days interval T6: Botanical pesticides Safeclean 5 ml/L of water at 7 days interval T₇: Untreated control

Experimental layout and design

The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications.

Raising of seedlings and transplanting Brinjal seeds of BARI Begun-8 were sown directly in the Nursery bed.

Crop sampling and data collection

Five plants from each treatment were randomly marked inside the central row of each plot with the help of sample card.

Monitoring and data collection

The brinjal plants of different treatment were closely examined at regular intervals commencing from germination to harvest. The following data were collected during the course of the experiment-

• Number of healthy shoots

• Number of infested shoots

• Shoot infestation in number (%)

• Number of healthy fruits

• Number of infested fruits

• Fruit infestation in number (%)

• Weight (g) of healthy fruits

• Weight (g) of infested fruit

• Fruit infestation in weight (%)

• Plant height at harvest (cm)

• Length of healthy fruit (cm)

• Length of infested fruit (cm)

• Girth of healthy fruit (cm)

• Girth of infested fruit (cm)

• Individual fruit weight (g)

• Edible portion (%)

• Non-edible portion (%)

• Fruit yield per plot (kg)

• Fruit yield per hectare (ton)

Statistical analyses

The mean values of all the characters were calculated and analysis of variance were performed by the ‘F’ (variance ratio) test. The significance of the differences among the mean values of treatment in respect of different parameters was estimated by the Duncan’s Multiple Range Test (DMRT) at 5% level of probability.

Source of Information: M.S. Thesis, SEMESTER: JANUARY-JUNE, 2010, DEPARTMENT OF ENTOMOLOGY, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA 1207

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The plants treated with T₁ treatment (Neem oil @ 4 ml/L of water at 7 days interval), resulted significantly lowest percentage of infested shoot &fruit compared to those of other treatments during early, mid and late fruiting stage. Significantly the highest yield was obtained in plant under the treatment T_1.The treatments T₂ (Neem seed kernel @ 300g/L of water at 7 days interval) and T₃(Trichogramma evanescence @ 0.1g/6 m2 after 7 days interval) also gave more or less similar result as treatment T_1.The yield contributing characters found highest in T₁treatment for length and girth of fruits, weight of individual fruit, edible portion, non edible portion and yield per hectare. The highest Benefit Cost Ratio was found in T₁ may be due to the minimum infestation and cost compared to the other treatment components and the highest yield was produced in this treatment. Length, girth of healthy fruits, individual fruit weight and edible portion of fruit showed significant positive relation with yield of brinjal.

Knowledge Management: Thesis