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Some Novel Systemic and Contact Insecticides Against Termites in Tea

Mainuddin Ahmed
Bangladesh Tea Research Institute

Abstract/ Executive Summary:

Three long term experiments were conducted at three different locations to evaluate the efficacy of few new generations of pesticides against termites in tea with Imidacloprid such as Gaucho 70 WS, Admire 200SL, Tiddo 200SL, Fipronil such as Regent SC, Regent G and the other group Pounce 1.5 G, Lorsban 15 G. All these pesticides were highly effective with> 83% efficiency ( Gaucho 90.97%, Admire 89.33%, Regent SC 88.98%, Regent G 89.11 %, Heptachlor 93.6%, Pounce 86.85%, Tiddo 94.2% and Lorsban 82.94% ) against termites. Abbott formula was used for determining their effectiveness. The experimental plots treated with Regent SC had the highest infestation (24.02%) followed by control (22.05%), Gaucho (20.77%), Lorsban (20.60%), Tiddo (17.71%), Regent G (17.23%), Pounce (17.03%), Heptachlor (16.71%) and Admire (20.47%).

Keywords: Insecticides, Termites, Tea, substitute

Location: Three different locations ego Satgaon T.E. and Shumshernugger T.E. in greater Sylhet district and Ramgarh T.E. in greater Chittagong district.

Start Date: 00-00-1998

End Date: 00-00-2000

Program Area: Pest Management

Commodity: Insecticide

Objectives:

To finding out suitable substitute, efforts were made to evaluate the efficacy of few pesticides for efficient control of termites in tea plantations.

Methodology:

The experiment was conducted on the efficacy of eight different insecticides to be used in tea plantations of Bangladesh. Three long-term trials were, therefore, made in three different locations ego Satgaon T.E. and Shumshernugger T.E. in greater Sylhet district and Ramgarh T.E. in greater Chittagong district. Data on the termite infestation were collected from the experimental fields before using the insecticide in each location during 1998-2000. Each insecticide was applied immediately after the pre-treatment observations in each location with three replications. Data were then collected in each month for each treatment (insecticide) and replication. The procedure for data collection was thus continued having one month interval of twelve different months. The annual infestation rates after the post-treatment application for each insecticide were calculated. Three chemicals i.e. Regent G, Pounce 1.5 G and Lorsban 15 G were broadcast in the collar zone of the plants.

Source of Information: Tea J. of Bangladesh. 36 (1 & 2): 2000

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It shows that the experimental plots treated with Regent SC had the highest infestation (24.24%) during the pre-treatment application followed by control (22.05%), Gaucho (20.77%), Lorsban (20.60%), Tiddo (17.71%), Regent G (17.23%), Pounce (17.23%), Heptachlor (16.71%) and Admire (20. 47%). Efficacy of aforesaid chemicals was compared with Heptachlor 40WP ( as previously standardised).

Knowledge Management: Journal