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Development of an Integrated Management Approach for Pod Borer, Helicoverpa Armigera (hubner) on Chickpea*

MD. ALTAF HOSSAIN
Senior Scientific Officer
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Ishurdi, Pabna

MD. AZIZUL HAQUE
Professor,
Department of Entomology, Bangladesh Agricultural University (BAU), Mymensingh

MASUM AHMAD
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Ishurdi, Pabna

M. Z. H. PRODHAN
Senior Scientific Officer
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute (BARI), Ishurdi, Pabna

Abstract/ Executive Summary:

An experiment was conducted to develop an IPM approach for the management of pod borer, Helicoverpa armigera (Hubner) in chickpea field. Out of seven modules studied, module 5 consisting of sequential first spray with Helicoverpa nuclear polyhedrosis viruses (HNPV) @ 500 LE/ha and second spray after seven days interval with Cypermethrin @ 1 ml/ litre gave the best protection with the lowest pod borer damage (4.62%) and provided the highest yield (2096 kg/ha) and maximum net return (Tk. 43746/ha) followed by module 3 where only RNPV was sprayed twice. But the most economic module for pod borer management was M₂ where chickpea intercropped with mustard was sown on 15 November. For best protection against pod borer, the most effective IPM module was chickpea sown on 15 November and first spraying with HNPV @ 500 LE/ha just at 100% plant pod formation stage and second spray after 7 days with Cermethrin @ 1 ml/L, ensuring higher yield and return.

Keywords: Integrated management, Pod borer, Chickpea

Location: Regional Agricultural Research Station, Ishurdi, Pabna

Start Date:

End Date:

Program Area: Pest Management

Commodity: Chickpea

Objectives:

An attempts have been made to developing integrated management approach using cultural practices, host plant resistance, synthetic insecticides and biopesticides.

Methodology:

The experiment was conducted with four management components in seven treatment modules at Regional Agricultural Research Station, Ishurdi, Pabna, Bangladesh during rabi season of 2005-06. These modules were selected from the previous experiment carried out on the pod borer. The IPM treatment modules were: M₁ = The optimum date of sowing (15 November) + the best line (ICCV-95 138) + the most economic NPK fertilizer dose (NPK 40-20-20 kg/ha), M₂ = M₁ + mustard intercropping, M₃ = M₁ + HNPV (Helicoverpa Nuclear Polyhedrosis Virus) spray @ 500 LE/ha, M₄ = M₁ + Cypermethrin spray @ l ml/L, M₅= M₁ + (HNPV @ 500 LE/ha + Cypermethrin @ 1 ml/L) spray, M₆ = M₁ + mustard intercropping + HNPV spray @ 500 LE/ha and M₇ = M₁ + mustard intercropping + Cypermethrin spray @ 1 ml/L. The experiments were laid out in randomized complete block design with four replications. The treatments were randomly distributed in each block. The unit plot size was 4m × 4m in sole cropping and 3.6m × 4m in mustard intercropping treatments with a distance of 100 cm between the plots and 150 cm between the replications. In unit plots, row to row planting distance of chickpea-chickpea was 50 cm and chickpea-mustard was 30 cm and plant to plant was 10 cm. Fertilizer NPK @ 40, 20, and 20 kg/ha in the form of urea, triple super phosphate and muriate of potash, respectively were applied as basal at the time of sowing seeds. The seeds of the best line (ICCV-95138) considering pod borer resistance and potential yield were sown on 15 November 2005 in rows with spacing of chickpea-chickpea 50 cm and chickpea-mustard 30 cm and plant to plant distance 10 cm.The experimental data were analyzed by MSTAT-C software. The per cent data were transformed by square root transformation for statistical analysis

Source of Information: Bangladesh J. Agril. Res. 35(2) : 201-206, June 2010 ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The most economic module for pod borer management was M₂ where chickpea intercropped with mustard sown on 15 November. To get best protection against pod borer, the most effective IPM module was sowing chickpea on 15 November and first spraying with FINPV @ 500 LE/ha just at 100% plant pod formation stage and second spray after 7 days with Cypermethrin 1 ml/L, ensuring higher yield and return. The IPM approach (M₅) might be useful where severe pod borer outbreak would occur and the IPM approach (M₂) might be applicable under no serious problem of this pest.

Knowledge Management: Journal