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Effect of Farmers' Practices for the Management of Insect Pests of Yard Long Bean (vigna Unguiculata)

M. S. UDDIN
Upazila Agriculture Officer
Department of Agricultural Extension (DAE), Bamna, Barguna

M. M. RAHMAN
Professor
Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur-1706

M. Z. ALAM
Professor
Department of Entomology, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur-1706,

M. M. HOSSAIN
Professor
Department of Horticulture, BSMRAU, Gazipur-1706,

M. E. HOQUE
Professor, Department of Agril. Extension and Rural Development, BSMRAU, Gazipur-1706, Bangladesh.

Abstract/ Executive Summary:

The research activity was conducted in major intensive yard long bean growing areas, such as Jessore, Dhaka, Narsingdi, Comilla, and Chittagong of Bangladesh to know farmers’ practices (FPs) for managing major insect pests of yard long bean during March 2009 to October 2009 in the farmers’ fields. The study comprised survey of sample farmers through intensive field visit for field data collection and inspection. A total of 5 farmers’ practices (FPs) were identified viz., Farmers’ Practice 1 (FP1) comprised chemicals plus mechanical plus cultural plus field sanitation, FP2 comprised chemicals plus cultural plus field sanitation, FP3 consisted of combination of chemicals plus field sanitation, FP4 having combination of mechanical plus cultural plus field sanitation and FP5 utilized combination of cultural plus field sanitation. Among the sample farmers, 81.33% practiced chemicals plus non-chemical methods, while 18.67% practiced only non-chemical methods. Considering infestation level, pod yield, BCR, and arthropod pests diversity, the performance of FP1 (chemical + mechanical + cultural + field sanitation methods) was adjudged as the best for managing pod borer and aphid and was revealed as the most suitable option (94.10% infestation reduction) for managing major insect pests of yard long bean in those areas of Bangladesh.

Keywords: Farmers' practices, Insect pests management, Yard long bean.

Location: Jessore Sadar, Savar (Dhaka), Shibpur (Narsingdi), Chandina (Comilla), and Mirshawrai (Chittagong) upazillas

Start Date: 00-03-2009

End Date: 00-10-2009

Program Area: Pest Management

Commodity: Insects

Objectives:

To inspect insect pests and farmers’ practices (FPs) for managing major insect pests attacking yard long bean in intensive growing areas of Bangladesh.

Methodology:

The survey on yard long bean cultivation was conducted in the farmers’ fields in five major growing areas of yard long bean, such as Jessore Sadar, Savar (Dhaka), Shibpur (Narsingdi), Chandina (Comilla), and Mirshawrai (Chittagong) upazillas during March 2009 to October 2009. The study comprised survey of sample farmers and intensive field visit for field data collection and inspection. From each upazilla, one union and from each selected union, one yard long bean field (2700 m²) was randomly selected for the survey and inspection. For each location, 15 yard long bean farmers were randomly selected for the study by applying the statistical random chart with the help of the sub assistant agriculture officers (SAAOs). Thus a total of 75 farmers from all the five districts were selected for interviews and their individual plots (180 m²) were visited for the study. Description of farmers’ practices Farmers’ practice 1 (FP1): In each location, 3 farmers practiced in combination of chemical, mechanical, cultural, and field sanitation methods for insect pests control. In each plot (180 m²), malathion (Malaton 57 EC) was sprayed once at the vegetative stage and spinosad (Tracer 45 SC) was sprayed twice during reproductive stage of yard long bean. Hand picking of infested plant parts was done 5 times during the crop growing season at 7 days intervals for mechanical control measure. Sowing time (1 March) was considered cultural measure and irrigation was applied 7 times to crop field as field sanitation. Farmers’ practices 2 (FP2): In each location, 3 farmers practiced in combination of chemical, cultural, and field sanitation methods. In each plot, dimethoate (Rogor 40 EC) was sprayed once at the vegetative stage and emamectin benzoate (Proclaim 5 SG) was sprayed 3 times during reproductive stage of yard long bean. Sowing time (16 March) considered as cultural measure and irrigation was applied 7 times to crop field as field sanitation. Farmers’ practices 3 (FP3): In each location, 3 farmers adopted in combination of chemical and field sanitation methods. In each plot (180 m² ), diazinon (Diazinon 60 EC) was sprayed once at the vegetative stage and cypermethrin (Ripcord 10 EC) was sprayed 3 times during reproductive stage of yard long bean and irrigation was applied 7 times to crop field as field sanitation. Farmers’ practices 4 (FP4): In each location, 3 farmers practiced in combination of mechanical, cultural, and field sanitation methods. In each plot (180 m²), hand picking was done 5 times during the crop growing season at 7 days intervals for mechanical control measure. Sowing time (31 March) considered as cultural measure and irrigation was applied 7 times to crop field as field sanitation. Farmers’ practices 5 (FP5): In each location, 3 farmers practiced in combination of cultural and field sanitation methods. In each plot (180 m²), sowing time (15 April) considered as cultural measure and irrigation was applied 7 times to crop field as field sanitation. Data were collected directly from the sample farmers by administering predesigned and pretested questionnaires (Instrument 1). Data were recorded in pre-formatted register (Instrument II) at 15 days interval from the sample farmer’s crop fields through field and crop observation. Data were recorded from randomly pre-selected 7 (Seven) yard long bean plants at the morning (8 am - 10 am) by using normal pace of 20 steps interval along the field avoiding boarder lines. Observation was made by visually on infested and healthy plant parts, and ultimately healthy and infested yield at harvest and sales of harvested produces which were assisted by SAAOs of Department of Agricultural Extension (DAE) of respective areas. For effectiveness and/or impact assessment, one combination of farmers' practice (FP) was considered as treatment and one district was considered as single replication for output of all five districts. Data were compiled and statistically analyzed by using MSTAT-C software and analysis of variance (ANOVA) was calculated by F-test. Means were separated following the Duncan’s Multiple Range Test (DMRT) at 5% level of probability

Source of Information: Bangladesh J. Agril. Res. 39(1): 173-184, March 2014, ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Farmers’ practices for management of insect pests of yard long bean were found in use of chemical and non-chemical methods. The findings of the present study reveal that the use of chemical insecticides profoundly influences farmers' practices for managing insect pests of yard long bean. But they are not solely dependent on chemical insecticides while they are also utilizing other practices like mechanical, cultural, and field sanitation methods. Use of chemical and non- chemical options maintaining the Integrated Pest Management (IPM) strategy will provide cost effective insect pests management of yard long bean.

Knowledge Management: Journal