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Effect of Cultural Practices for the Management of Brown Planthopper

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

M.E. Haque
DAE Khamarbari, Dhaka

L.I. Kabir
SAIP, DAE, Mymensingh

Abstract/ Executive Summary:

A detail study was made on cultural practices for integrated management of brown planthopper (BPH), Nilaparvata lugens (Stål.) (Homoptera: Delphacidae), a major pest of rice in Bangladesh. The experiment with cultural practices was conducted in Boro season during the period of January to May 2005 at BINA Farm, Mymensingh. Six different treatments were assigned in a RCBD. The treatments were - Removal of old leaf (C₁), Field with no stagnant water (C₂), Removal of old leaf in the field with no stagnant water (C₃), Removal of old leaf in the field with no stagnant water and bending of rice plants (C₄), Higher plant spacing (C₅) and control (C₆). Among the treatments, removal of older leaves from the rice plant in the field with no stagnant water and bending of plants (C₄) provided a good control of the pest. As it was evident that removal of water has negative impact on BPH population, draining out of water from the field could be practised to reduced and manage BPH in rice field. Cultural practices like wider spacing could also be practised in managing BPH. The results of this experiments are discussed for their possible use in integrated management of brown planthopper.

Keywords: Brown planthopper, Cultural practices, Rice

Location: BINA Farm, Mymensingh

Start Date: 00-01-2005

End Date: 00-05-2005

Program Area: Pest Management

Commodity: Insects

Objectives:

1. To gather a thorough knowledge on the eco-biology of the BPH, other pests and the crop plant is needed before cultural control techniques are introduced.

Methodology:

The experiment with cultural practices was conducted in Boro rice season during the period of January to May 2005 at BINA Farm, Mymensingh. Six different treatments were assigned in a RCBD. The treatments were (i) Removal of old leaf (C₁) (ii) Field with no stagnant water (C₂) (iii) Removal of old leaf in the field with no stagnant water (C₃) (iv) Removal of old leaf in the field with no stagnant water and bending of rice plants (C₄) (v) Higher plant spacing (C₅) and (vi) control (C₆). Three levels of BPH (50, 75 and 100) were considered in the experiment. There were 18 treatments combination in the study. Each treatment was replicated three times. The plot size was 1m × 1m. ‘Ail’ (demarcation line) of the plot was 20 cm in height and 15 cm in width. Each plot had facilities for irrigation and drainage. The plots were treated with Urea, T. S. P., M. P. and Gypsum fertilizer using recommended dose. Row to row distance was 20 cm and plant to plant distance was 15 cm in all the plots except the treatment C₅, where the distance between rows was 30 cm and between plants was 25 cm. The plots in the treatments C₂, C₃ and C₄ were maintained with no stagnant water but with sufficient moisture in the soil. Remaining plots were supplied and maintained with sufficient water. In treatment C4 bending of rice plants was practised at every 5 rows using a bamboo stick to increase the sunlight and movement of air in the field. Each block was covered with a big size nylon nets. The different numbers of BPH (50, 75 and 100) were released to the plots after 45 days after transplanting (DAT). Data were collected at 24 hours interval. Number of BPH moved from one plot to another plot was recorded. Data were recorded daily until 10 days.

Source of Information: J. Agrofor. Environ. 2(2): 85-88, 2008; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Removal of older leaves from the rice plant in the field with no stagnant water and bending of plants (C₄) provided a good control of the pest. As it was evident that removal of water has negative impact on BPH population, draining out of water from the field could be practised to reduced and manage BPH in rice field. Cultural practices like wider spacing could also be practised in managing BPH. The results of this experiments are discussed for their possible use in integrated management of brown planthopper.

Knowledge Management: Journal