Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Effect of Bio-rational Mineral Oil on the Mortality of Bph

Dr. Mohibul Hasan
Principal Scientific Officer
Entomology Division, BRRI, Gazipur-1701

Sheikh Shamiul Haque
SSO
Entomology Division, BRRI, Gazipur-1701

Abstract/ Executive Summary:

Paraffinic mineral oil is used to control pests of different crops. BPH is the major pest of rice in Bangladesh. The experiment was conducted to evaluate the insecticidal efficacy of the paraffinic mineral oil on BPH nymph and adults.Six groups of 15-day old BR3 seedlings, collected from green house were dipped in six beakers having five different concentrations of mineral oil (2, 1, 0.5, 0.25 and 0.125%) and water. Two seedlings receiving the same treatments were placed in each of the test tubes measuring 20 and 2.5 cm in length and diameter respectively. A little water was poured in all of the test tubes to maintain the turgidity of the seedlings. Ten 3rd instar BPH nymphs were released in each test tube. The openings of the test tubes were kept closed with nylon nets. Each test tube was considered as a replication. There were eight replications for each of the six treatments. The experiment was laid in RCBD. The mortality of the nymphs was counted at 24 and 48 hours after infestation. The ANOVA was done on the ARCSIN transformed data of the mortality percent found after Abbott's mortality correction. Among the different concentrations of the mineral oil mortality of BPH increased with the increase of concentration. The highest (98%) mortality obtained with the 2% concentration of the oil. Moreover, this concentration deterred 60% BPH population from feeding on rice plants.

Keywords: Bio -rational, Mineral oil, Mortality and BPH

Location: BRRI, Gazipur

Start Date: 01-07-2006

End Date: 30-06-2007

Program Area: Pest Management

Commodity: Insecticide

Objectives:

To know the insecticidal efficacy of paraffinic mineral oil on BPH nymphs and adults

Methodology:

Six groups of 15-day old BR3 seedlings, collected from green house were dipped in six beakers having five different concentrations of mineral oil (2, 1, 0.5, 0.25 and 0.125%) and water. Two seedlings receiving the same treatments were placed in each of the test tubes measuring 20 and 2.5 cm in length and diameter respectively. A little water was poured in all of the test tubes to maintain the turgidity of the seedlings. Ten 3rd instar BPH nymphs were released in each test tube. The openings of the test tubes were kept closed with nylon nets. Each test tube was considered as a replication. There were eight replications for each of the six treatments. The experiment was laid in RCBD. The mortality of the nymphs was counted at 24 and 48 hours after infestation. The ANOVA was done on the ARCSIN transformed data of the mortality percent found after Abbott's mortality correction.

Source of Information: Proceedings of BRRI Annual Internal Review for 2006-2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

High mortality of BPH nymph was observed with mineral oil. The higher concentrations (2%) showed higher mortality (98%) at 24-hour count. The mortality increased at 48 hrs after treatment. The lower concentration showed no significant difference with the 2nd (1.0%) and 3rd (0.50%) concentrations in respect of mortality at 48 hours count. However, the lowest mortality (66-68%) was observed with the 0.25% concentrations.

Knowledge Management: Report/Proceedings