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Development of an Insecticide Based Management Package Against Pod Borer, Euchrysops Cnejus (f) Attacking Yard Long Bean

M. S. Hossain
Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur-1706, Bangladesh

M. M. Rahman
Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur-1706, Bangladesh

M. R. U. Miah
Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur-1706, Bangladesh

Abstract/ Executive Summary:

A study was conducted in the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during February- August 2010 to evaluate the efficacy of some insecticide based management packages against pod borer, Euchrysops cnejus (F.) attacking yard long bean. Results indicated that management package comprising of mechanical control (hand picking) with 2 sprays of Ripcord10 EC (Cypermethrin) @ 1.0 ml/litre of water at 15 days interval starting from inflorescence infestation appeared to be the best option offering the lowest pest incidence (10.58%), lowest intensity of infestation, the highest yield (14.25 t/ha) and BCR (4.465) followed by sole use of Ripcord 10 EC (Cypermethrin) at the same rate compared to untreated control. Results obtained from the rest of the approaches were not encouraging.

Keywords: Management package, Hand picking, Cypermethrin, Pod borer, Yard long bean.

Location: The experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur

Start Date: 00-00-2010

End Date: 00-00-2010

Program Area: Pest Management

Commodity: Insects, Yard long bean

Objectives:

To provide the farmers with an economic and suitable management package(s) to combat POD BORER of yard long bean

Methodology:

The study was conducted at BSMRAU experimental field, Gazipur during Kharif 2010 season. Yard long bean variety, Toky of East-West Seed Company was sown in the plot 3x3 m². The experiment was laid out in Randomized Complete Block Design with 5 packages with an untreated control and replicated thrice. The recommended agronomic practices were followed to raise the crop. The packages were assigned as follows: Package 1 (P₁) : Two sprays with Ripcord 10EC (Cypermethrin) @ 1.0 ml/litre of water at 15 days interval Package 2 (P₂) : Two sprays with Asataf 75 SP (Acephate) @ 2.0 g/litre of water at 15 days interval. Package 3 (P₃) : Mechanical control (hand picking) & 2 sprays with neem seed extract (NSE) @ 50g/litre of water at 15 days interval. Package 4 (P₄) : Mechanical control (hand picking) & 2 sprayswith Ripcord 10 EC (Cypermethrin) @ 1.0 ml/litre of water at 15 days interval. Package 5 (P₅) : Mechanical control (hand picking) & 2 sprays with Asataf 75 SP (Acephate) @ 2.0 g/lire of water at 15 days interval and an untreated control. Data collection was started at flower initiation up to final harvest. The data were recorded on inflorescence infestation, flower shedding, pod infestation (by number and weight) and intensity of infestation by pod borer larvae, yield (t/ha). Economic analysis of different packages was done by determining BCR (benefit cost ratio). All the data were analyzed systematically using MSTAT-C software and the means were separated using LSD test.

Source of Information: Ann. Bangladesh Agric. (2013) 17 (1 & 2): 19-28 ISSN 1025-482X

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the above study it could be concluded that in terms of lowest pod infestation (10. 58%), intensity of infestation (80 points), highest benefit cost ratio (BCR) (4. 465) and yield (14. 25 t/ha) may be achieved by the management package comprising of mechanical control (hand picking) & 2 sprays with Ripcord 10 EC (Cypermethrin) @ 1. 0ml/litre of water at 15 days interval and may be chosen as the best package for suppressing pod borer in yard long bean field.

Knowledge Management: Journal