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Performance of Three Vertebrate Predators in Controlling Brown Plant Hopper

M.T. Haque
Entomology Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh

K.S. Islam
Department of Entomology, BAU, Mymensingh

M.A. Uddin
Department of Agriculture Extension, Khamarbari, Dhaka

Abstract/ Executive Summary:

A study was made to measure the performance of three vertebrate predators for management of brown planthopper (BPH), Nilaparvata lugens (Stål.) (Homoptera : Delphacidae) in Boro rice season during the period of December 2004 to April 2005 at Bangladesh Institute of Nuclear Agriculture (BINA) Farm, Mymensingh. Four treatments were laid out in a RCBD. The treatments were: (i) Duckling, Anas boschos (ii) Bull frog, Rana tigrina (iii) Fish (climbing perch), Anabus testudeneis and (iv) a control. The comparative evaluation indicated that treatment with ducklings performed better than other predators. The performance of these predators were in the order of ducklings > frogs > fishes. It may be noted that the ducklings are capable to reduce BPH population in a short period of time. The results of this study are discussed for their possible use in integrated management of brown planthopper.

Keywords: Brown planthopper, Vertebrate predators, Duckling, Bull frog, Fish (Climbing perch).

Location: BINA Farm, Mymensingh

Start Date: 00-12-2004

End Date: 00-04-2005

Program Area: Pest Management

Commodity: Vertebrate

Objectives:

1. To measure the performance of three vertebrate predators for management of brown planthopper (BPH), Nilaparvata lugens (Stål.) (Homoptera : Delphacidae) in Boro rice.

Methodology:

The present study was undertaken utilizing three indigenous vertebrate predators against BPH in Boro rice season during the month of December 2004 to April 2005 at BINA Farm, Mymensingh. Four treatments including three vertebrate predators and a control were laid out in a RCBD. The predators were: (i) Duckling, Anas boschos (ii) Bull frog, Rana tigrina (iii) Fish (climbing perch), Anabus testudeneis and (iv) a control. Each predators had three density levels (3, 5 and 7) and every density level was evaluated against three levels of BPH population density (20, 30 and 40). Each treatment was replicated three times. The plot size was 1m × 1m. Each plot was demarcated earthen wall (ail) of 20 cm in height and 15 cm width surrounding the plot. Each plot was covered separately with nylon net (1m length × 1m breadth × 1m height). In each plot known number of vertebrate predators was released to feed on the known number of BPH. Known number of vertebrate predator and BPH were introduced in a plot covered separately with nylon net. In the control plot only BPH was released. Some artificial diet were supplied for the use of duckling, frog and fish everyday. Data were recorded daily starting after 24 hours of release on the survival of BPH. Recording of data was continued until the number of BPH reaches to zero. The rate survival of the prey was calculated and analyzed statistically.

Source of Information: J. Agrofor. Environ. 3 (1): 191-193, 2009; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Considering the result of vertebrate predators duckling, frog and fish may be used to control BPH as a alternative methods of insecticides in the framework of IPM. All the three vertebrate predators were found to provide control of BPH and their performance can be graded as duckling>forg>fish in reducing the pest. However, as the duckling and fishes can contribute for extra farm income, their release and maintenance in the pest infested field would have high value in integrated management of the pest BPH. The performance of duckling was very promising in controlling BPH short period of time. As it is found as a rapid action bio-control agent, its use can be compared with the application of insecticides.

Knowledge Management: Journal