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Farmer`s Perception About Resurgence of Brown Plant Hopper, Nilaparvata Lugens (stal) in Bangladesh

A B M A Uddin
Senior Scientific Officer, Entomology Division, BRRI

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

Abstract/ Executive Summary:

Studies were conducted on resurgence of brown planthopper (BPH), Nilaparvata lugens (Stål) and its possible management through a survey in six different regions (viz Tanore, Rajshahi; Niamatpur, Naogaon; Nachole, Chapai Nawabganj; Sadar, Dinajpur; Tarash, Sirajganj and Trishal, Mymensingh). Farmer’s perception of BPH resurgence and its management was more or less similar in different regions with some exception. About 60% farmers were able to identify BPH and 40% farmer could identify the pest problem at the later stage of the infestation when burning symptom was visible in patches. All the respondent farmers (100%) relied on use of insecticide where the selection of insecticide as well as its application was not appropriate.

Keywords: Brown planthopper, Resurgence, Farmer`s perception

Location: Six upazilas of six districts namely: Tanore, Rajshahi; Niamatpur, Naogaon; Nachole, Chapainawabganj; Tarash, Sirajganj and Trishal, Mymensingh

Start Date: 00-00-2014

End Date:

Program Area: Pest Management

Commodity: Insects

Objectives:

To find out the reasons for resurgence a survey was conducted on the farmer`s perception about brown planthopper resurgence.

Methodology:

The survey was carried out at six districts of Bangladesh to study on the farmer perception about brown planthopper (BPH) resurgence in T. Aman season 2014. There are three methods by which survey data can be gathered (Dillon and Hardaker, 1993). These are i. Direct observation; ii. Interviewing of respondents and iii. Records kept by respondents. Since the farmers of Bangladesh do not usually maintain records, the second method was followed to achieve the objectives. However, survey method is not free from drawback. The main drawback of this method is to rely on the memory of the respondents. To minimize errors, repeated visits were made to collect data and in case of any omission or contradiction the farmers were revisited to obtain the missing and/or correct information. Selection of the study area. The areas where brown planthopper resurgence was reported in transplanted Aman season 2014 were selected for survey. A lot of news were published in several local and national newspaper of Bangladesh about the resurgence of brown planthopper (Table 1). On the basis of severity of damage and the communication facilities, six upazilas of six districts namely: Tanore, Rajshahi; Niamatpur, Naogaon; Nachole, Chapainawabganj; Tarash, Sirajganj and Trishal, Mymensingh were selected. Period of survey. The survey was done in T. Aman, during the period from October to November 2014, when the rice crop was at booting to harvesting stage. Selection of farmers. Farmers who cultivate irrigated rice in the dry and intermediate zones and favourable rainfed rice in the wet zone were selected for the survey. A total of 180 farmers were selected for collecting data to fulfil the objective. About 30 farmers, selected at random, were interviewed in an upazila of each district. Survey instrument/questionnaire. In conformity with the objectives of the study, a preliminary questionnaire was designed for collecting data from the selected farmers. The draft questionnaire was pre-tested with a few sample farmers of the study areas. Thus, some parts of the draft questionnaire were improved, rearranged and modified in the light of the actual and practical experiences gained from the pre testing. The questionnaire was finally developed in a simple manner, so that accurate information could be obtained without repetition and misunderstanding. Data collection. The survey was designed to describe the sociodemographic profile of rice farmers in the selected districts, record the agronomic and pest management practices in T. Aman 2014 (July to December 2014), and obtain detailed information about farmers’ knowledge and attitudes on insect pests and natural enemies of rice and their use of pesticides. Their knowledge in traditional pest control methods was also inquired. Detailed information on the use of insecticide such as product name, manufacturer, group, technical grade (a. i. %), frequency and time of application and doses of insecticide were recorded. Date processing. The collected data were coded, summarized and processed for analysis. Data were also verified to eliminate possible errors and inconsistencies. The first step was taken to scrutinize the data of each and every schedule to find out any inconsistency or omission in the data collection and to avoid irrelevant information. Statistical analysis. After completing the pre-tabulation task, actual tabulation work was started. Processed data were transferred in excel worksheet. Simple statistical analysis, such as percentage, mean, standard deviation (SD), coefficient of variation (CV), standard errors (SE) were determined for the interpretations of the findings of the study.

Source of Information: Bangladesh Rice J. 23 (1) : 21-33, 2019,

Article Link (Online Journal): doi.org/10.3329/brj.v23i1.46078

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Farmers of different regions of the country have lack of knowledge on brown planthopper and its management. That is why the outbreak of BPH in different regions has been increasing day by day. To manage this detrimental pest, awareness should be developed among the farmers.

Knowledge Management: Journal