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Pest and Natural Enemy Incidence in Light Trap

Mahfuj Ara Begum
Senior Scientific Officer
Entomology Division, BRRI, Gazipur-1701

Dr. Mainul Haq
CSO and Head
Entomology Division, BRRI, Gazipur-1701

Abstract/ Executive Summary:

The highest number of insect pests was observed in the light trap catch of BRRI Gazipur. Two peaks of GLH and BPH in the month of October-November and April-May were found at Gazipur. Like previous year the YSB population reached its peak in October at Gazipur but unlike previous year, the 2nd highest peak was observed at Barisal and that was in the month of April. Light trap catch of Barisal showed the highest number of RLF. The spider, LBB, CDB, GMB and STPD dominated the predatory arthropods of different locations.

Keywords: Pest, Natural enemy, Light trap

Location: BRRI, Gazipur, BRRI regional station Comilla, Habigonj,Barisal and Rajshahi

Start Date: 01-07-2007

End Date: 30-06-2008

Program Area: Pest Management

Commodity: Rice

Objectives:

To study the pest and their natural enemy incidence patterns in light trap and to create a database.

Methodology:

Rice insect pests and their natural enemies were monitored throughout the year by light trap from July 2007 to June 2008 at BRRI headquarter, Gazipur and BRRI regional stations at Comilla, Barisal, Rajshahi and Habigonj.

Source of Information: Proceedings of BRRI Annual Internal Review, 2007-08

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The incidence of insect pests was higher at Gazipur than the regional stations. The abundance of GLH, WLH, ZLH, BPH, WBPH, YSB, RLF and LHC were found higher than the other insect pests. Like previous year there were two peaks of GLH in the month of October-November and April-May at Gazipur. GLH population was comparatively low in other locations than that of Gazipur. The population of BPH peaked in Gazipur during early November. The highest number of YSB was observed in Gazipur in the month of October and in Barisal a peak was observed during the month of April. The abundance of RLF was also higher in Barisal and peaked during October and April. Like insect pest, maximum number of natural enemies were recorded at Gazipur. Green mirid bug (GMB), CDB, STPD and LBB were the dominating predatory arthropods in all the five locations. Population of LBB was highest in Gazipur in mid September and in Rajshahi during May. CDB population was also higher in Gazipur and maximum number was caught during the month of August. GMB was also a dominant predator in Gazipur and the peak was observed in the month of November.

Knowledge Management: Report/Proceedings