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Development of Effective Management Package Against Thrips in Brinjal

Zebun Nessa

A K M Khorsheduzzaman

Abstract/ Executive Summary:

A study on development of an effective management package against thrips (Thripspalmi), a devastating pest of brinjal was conducted at Entomological Research Field of Horticulture Research Centre, BARI, Gazipur, during rabi season (October 2014 April 2015) with BARI Begun 8 to develop an effective management option against thrips. Six treatments, viz. T₁ = Use of white sticky trap, T₂ = Spraying of spinosad 45 SC (Tracer) @ 0.4ml/L of water at 7days interval, T₃ = Spraying of Bioneem plus (Azadirachtin 1EC) @ 1ml/L of water at 7 days interval, T₄ = Spraying of (Chlorphenapyr) Intrepid 10EC @ 1ml/L of water at 7 days interval, T₅ = Spraying of Fipronil (Aronil 50SC) @ 0.5ml/L of water at 7 days interval, and T₆ = Untreated control, in a RCB Design with four replications. Considering marketable yield, benefit cost ratio, fruit infestation and fruit infestation reduction over untreated control spraying with Tracer @ 0.4ml/L and Aronil 50SC @ 0.5ml/L at seven days interval gave the maximum protection against thrips in brinjal.

Keywords: Management package, Thrips, Brinjal

Location: BARI, Gazipur

Start Date: 00-10-2014

End Date: 00-04-2015

Program Area: Pest Management

Commodity: Brinjal

Objectives:

To develop an effective management package against thrips in brinjal.

Methodology:

The study was conducted at Entomological Research Field, Horticulture Research Centre, BARI, Gazipur during rabi season ( on October 2014 April 2015) to develop an effective management package against thrips. The study was designed in a RCB Design with four replications. The unit plot size was 5mX2m. Six treatments were evaluated in the experiment viz. T₁ = Use of white sticky trap, T₂ = Spraying of Spinosad 45 SC (Tracer) @ 0.4ml/L of water at 7days interval, T₃= Spraying of Bioneem plus (Azadirachtin 1EC) @ 1ml/L of water at 7 days interval, T₄= Spraying of (Chlorphenapyr) Intrepid 10EC @ 1ml/L of water at 7 days interval, T₅ = Spraying of Fipronil (Aronil 50SC) @ 0.5ml/L of water at 7 days interval, and T₆ = Untreated control. All the treatments were tested on BARI Begun-8. The number of healthy and infested flowers and fruits were counted from randomly selected five plants per plot started at first flowering initiation. The number of thrips was also counted using a white sticky board below flowers and shaking the flowers by finger. The number of healthy and infested fruits were counted at each harvest. Total number of fruits and infested fruits per plot was counted for calculating percent infestation. Marketable yield was also recorded by calculating individual plot yield. Thus data were analyzed statistically after necessary transformations by using MSTAT-C software. ANOVA was made by F variance test and the differences between treatment means were compared by DMR Test (Gomez and Gomez, 1984). Marginal benefit cost ratio was calculated following Islam and Karim (1991).

Source of Information: BARI HRC (Olericulture) Annual Research Report 2014-2015

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Considering yield and marginal benefit cost ratio, it might be concluded that chemical insecticide Spinosad 45SC (Tracer) and Fipronil 50SC (Aronil) and non-chemical approach white sticky traps treatments performed the better among the management approaches evaluated against thrips in brinjal. These three management approaches could be suggested for thrips management.

Knowledge Management: Report/Proceedings