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 Neem Cake Against Rice Hispa at Net House Condition

Md. Mofazzel Hossain
Scientific Officer
Entomology Division, BRRI, Gazipur-1701

Mohammad Fazle Rabbi
PSO
Entomology Division, BRRI, Gazipur-1701

Abstract/ Executive Summary:

Farmers of Bangladesh used chemical insecticides to control rice hispa (RH). But the chemical insecticides are most costly and often create health hazards and environmental pollution. So alternative eco-friendly products is needed to control this pest. Nine concentrations of neem cake powder i.e., 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 and 4.0 t/ha were evaluated against rice hispa in net house of BRRI to know the efficacy of neem cake against rice hispa. Neem cake was air-dried and then crushed to powder with mortar and pestle (Humble mortar). The powder was sieved through 30-mesh sieve/net. The amount of Neem cake required for each pot of each concentration was calculated on the basis of weight (kg) of soil (2 million kg) per hector. Forty five days old BR3 potted plants covered with mylar cage. Five pairs of adult hispa were released inside the pot 5 days after application of neem cake powder to the pot soil. The experiment was designed in CRD with three replications and each pot considered a replication. Mortality record was taken at 24, 48 and 72 hrs of insect release.and found that neem cake application (0.5 – 4.0 t/ha) showed no significant effect on the mortality of rice hispa.

Keywords: Efficacy, Neem cake, Rice hispa

Location: BRRI, Gazipur

Start Date: 01-07-2005

End Date: 30-06-2006

Program Area: Pest Management

Commodity: Insecticide

Objectives:

To know the efficacy of neem cake against rice hispa

Methodology:

The experiment was conducted to find out the efficacy of neem cake against rice hispa in net house during Boro 2006. Neem cake was air-dried and then crushed to powder with mortar and pestle (Humble mortar). The powder was sieved through 30-mesh sieve/net. The amount of Neem cake required for each pot of each concentration was calculated on the basis of weight (kg) of soil (2 million kg) per hector. Nine concentrations of neem cake powder 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 and 4.0 t/ha were evaluated against the insect. Forty five days old BR3 potted plants covered with mylar cage. Five pairs of adult hispa were released inside the pot 5 days after application of neem cake powder to the pot soil. The experiment was designed in CRD with 3 replications and each pot considered a replication. Mortality record was taken at 24, 48 and 72 hrs of insect release.

Source of Information: Proceedings of BRRI Annual Internal Review for 2005-2006

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Highest mortality of rice hispa were observed 13, 20 and 27% after 24, 48 and 72 hours after application of high doses of neem cake which indicated that the neem cake was ineffective against rice hipa even at a high concentration (4 t/ha).

Knowledge Management: Report/Proceedings