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Detection of Resistance in Tea Helopeltis to Endosulfan-thiodan 35ec

Dr. Mainuddin Ahmed
Chief Scientific Officer
Department of Pest Management, BTRI, Srimangal, Moulvibazar

Md. Kabirul Bashar
Scientific Officer
Entomology Division, BTRI, Srimangal, Moulvibazar

Ashis Ranjan Nath
Scientific Officer
Entomology Division, BTRI, Srimangal, Moulvibazar

Mohammad Shameem Al Mamun
Scientific Officer
Entomology Division, BTRI, Srimangal, Moulvibazar

Abstract/ Executive Summary:

An experiment was conducted to find out the detection of resistance in tea Helopeltis to Endosulfan-Thiodan 35EC. Different stages of Helopeltis were collected from Phulbari T.E., BEF and BTRI main station and reared in the laboratory. Bioassays of Endosulfan at different doses on Helopeltis collected from different locations were conducted at Entomology Laboratory, BTRI. Mortality % was corrected by Abbott’s formula. Resulting mortality from Endosulfan treatments of Helopeltis are shown as discriminating dose at three different locations. Widespread and long-time use of Endosulfan has lead to resistant development in Helopeltis. The results showed that Helopeltis of Phulbari T.E treated with Endosulfan had lowest mortalities (60.66-67.85). Among the three treatments tested which proved the Endosulfan resistance to Helopeltis population of Phulbari T.E.

Keywords: Tea Helopeltis, Resistance, Endosulfan, Thiodan

Location: Entomology Division, BTRI & Different Tea Estates

Start Date: 01-01-2003

End Date: 31-12-2007

Program Area: Pest Management

Commodity: Insecticide

Objectives:

To find out the detection of resistance in tea Helopeltis to Endosulfan-Thiodan 35EC.

Methodology:

Different stages of Helopeltis were collected from Phulbari T.E., BEF and BTRI main station and reared in the laboratory. Bioassays of Endosulfan at different doses on Helopeltis collected from different locations were conducted at Entomology Laboratory, BTRI.

Source of Information: Biennial Report 2007-2008

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results showed that Helopeltis of Phulbari T.E treated with Endosulfan had lowest mortalities (60.66-67.85). Among the three treatments tested which proved the Endosulfan resistance to Helopeltis population of Phulbari T.E.

Knowledge Management: Report/Proceedings