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Exploration of Plant Materials for the Control of Jute Yellow Mite

Entomology Department, Pest Management Division. Bangladesh Jute Research Institute ( BJRI). Manik Mia Avenew,Dhaka-1207.

Rafiqul Islam
CSO
Entomology Department, Pest Management Division. Bangladesh Jute Research Institute(BJRI). Manik Mia Avenew,Dhaka-1207

Abstract/ Executive Summary:

The experiment was conducted in the greenhouse premises of Bangladesh Jute Research Institute( BJRI). Dhaka during the year 2011 . The verity O-9898 was grown in earthen pots in greenhouse premises of Central station, Dhaka. Extracts of spent tea were evaluated against jute yellow mite in potted plants at greenhouse premises. Three doses spent tea extract were used to evaluate their efficacy against yellow mite. About 45 days after sowing when sufficient natural infestations of yellow mite were built up, extracts of plants materials were sprayed. The control plants were remained untreated .Corrected percent mortality was calculated by using Henderson and Tilton formula ( Henderson and Tilton 1955). All the three doses performed better in controlling yellow mite. Highest (64.95%) percent mortality of yellow mite infestation was recorded in 1:20 ratio of spent tea extract followed by ratio 1:30 (63.97%) and ratio 1:10 (62.42%) after 48 hrs. of spray. Highest ( 65.41%) percent reduction of yellow mite infestation was recorded in 1:30 ratio of spent tea extract .

Keywords: Jute, Mite , Control, Spent tea

Location: Entomology Department Laboratory and Green house of Bangladesh, Entomology Department Laboratory and Green house of BJRI

Start Date: 30-03-2011

End Date: 30-11-2011

Program Area: Pest Management

Commodity: Jute

Objectives:

1.To find out an alternate control measure of chemical pesticides and to reduce cost of production and keep environment friendly.

2. To evaluate the extracts of spent tea to control jute yellow mite in potted plants at greenhouse premises.

Methodology:

The experiment was conducted in the greenhouse premises of Bangladesh Jute Research Institute ( BJRI). Dhaka during the year 2011. The verity O-9898 was grown in earthen pots in greenhouse premises of Central station. Extracts of spent tea were evaluated against jute yellow mite in potted plants. Three doses of spent tea extract (1:10, 1:20 & 1:30) were used to evaluate their efficacy. About 45 days after sowing when sufficient natural infestations of yellow mite were built up, extracts of plants materials were sprayed. The control plants were remained untreated. Each treatment replicated 3 times. Mite population was calculated before spray and after 24, 48 and 72 hours of spray. Corrected percent mortality was calculated by using Henderson and Tilton formula (Henderson and Tilton 1955).Preparation of extracts were done by 50 gms of spent tea were soaked separately with 500 ml, 1000 ml & 1500 ml to get 1:10, 1:20 and 1:30 ratio of concentration.

Source of Information: Annual report 2011, BJRI

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Five thousands taka only

Total Budget (Tk.) : Five thousands taka only

Achievement/Findings:

All the three doses performed better in controlling yellow mite. Highest (64.95%) percent mortality of yellow mite infestation was recorded in 1:20 ratio of spent tea extract followed by ratio 1:30 (63.97%) and ratio 1:10 (62.42%) after 48 hrs. of spray. Highest ( 65.41%) percent reduction of yellow mite infestation was recorded in 1:30 ratio of spent tea extract . To take an alternate control measure of chemical pesticides and will reduce the cost of production of jute and keep the environment friendly.

Knowledge Management: Report/Proceedings