A dataset of factors influencing intentions for organic farming in Vietnam

This paper presents a survey dataset on factors influencing farmers' intention to produce organic farming in Hanoi, Vietnam. The survey was designed based on the theoretical integration model of theory of planned behavior (TPB) and norm activation model (NAM) including 7 factors, 33 items inherited from previous studies to collect information of the respondents and 5 other items used to find out the respondent's characteristic include: gender, age, educational qualification, farming experience and farming annual income. Questionnaires were sent directly to farmers at their home or farm in October 2019. 318 valid questionnaires were collected for the study of intentions for organic farming. The dataset was obtained as a reference source for later studies on organic farming development and organic farming production intent/behavior promotion.


Specifications
Agriculture Specific subject area Organic farming, intention of farmer, theory of planned behavior, norm activation model Type of data

Value of the Data
• The dataset describes the assessment of farmers in Hanoi, Vietnam on organic farming production based on seven factors from the TPB-NAM integrated model including: intention, attitude, subject norms, perceived behavioral control, personal norm, awareness of consequences and ascription of responsibility. At the same time, the dataset also includes 5 characteristics of the respondent: gender, age, educational qualification, farming experience and farming annual income. • The data set explores factors influencing the intentions of organic farming of farmers in Hanoi, Vietnam. • The dataset is the source of reference for state management agencies in making policies to promote organic farming production, contributing to building a sustainable national agriculture in developing countries like Vietnam.

Data Description
Organic farming increases farmers' income, while also helping to protect environmental pollution by avoiding harmful chemicals and fertilizers [12] . Organic farming is an important tool for achieving green yields and reducing the negative effects of conventional farming by removing synthetic chemical inputs during production [1] . Therefore, developing countries like Vietnam are trying to come up with policies to promote organic farming intentions of farmers. The dataset collected farmers' opinions based on seven factors from the TPB-NAM integration model. In particular, TPB has been accepted and widely used in studies with the purpose of predicting individual intentions and behavior, empirical studies have shown the relevance of this theory in the study of farmers' intentions/behavior [ 3 , 5 , 6 , 8 , 11 ]. NAM is derived from a pro-social context and has been widely used in many studies to explain not only pro-social intentions/behavior but also pro-environmental intentions/behavior in a wide range of contexts [ 2 , 4 , 7 , 9 , 14 ].
The data set was collected through a 2-part survey: the first part explores the respondents' characteristics including: gender, age, educational qualification, farming experience and farming annual income ( Table 1 ); the second part explores respondents' consent to statements related to factors affecting the intention to produce organic agriculture ( Table 2 ); Table 3 shows more detailed results between the variables. It took the farmer about 20 minutes to complete the entire survey. Valuable responses were obtained in 318 questionnaires. The questionnaire and answers were shown in the supplementary files.  The dataset includes: the respondent's characteristics ( Table 1 ) and seven factors: (1) intention; (2) attitude; (3) subject norms; (4) perceived behavioral control; (5) awareness of consequences; (6) ascription of responsibility; (7) personal norm ( Table 2 ).

Experimental Design, Materials and Methods
The survey was conducted directly at the farmer's residence or farm in October 2019. The survey team received the support from Department of Science and Technology in Hanoi to list and approach the target farmers. Respondents were farmers who were practicing conventional farming in Hanoi, Vietnam. Respondents were selected at random but still ensured their representativeness in some regions that were promoting the conversion to organic farming such as Soc Son, Chuong My, Ba Vi, ... in Hanoi. Each farmer participating in the survey received a support of 2 US dollar after completing all the contents of the questionnaire which were distributed directly and collected by the survey team.
The survey team designed a survey of 38 items, of which 5 were about respondents' characteristics, the remaining 33 items, are designed on a 5-point Likert scale (1: Strongly disagree; 2: Disagree; 3: Neutral; 4: Agree; 5: Strongly agree), focus on 7 factors: intention, attitude, subject norms, perceived behavioral control, personal norm, awareness of consequences and ascription of responsibility. All items in the survey are inherited from previous studies [ 10 , 13 ] and the replying is complete mandatory to ensure that the collected data does not contain missing data. The questionnaire did not use the reverse question, which was conducted directly by the survey team, with detailed observations and assisting farmers in the answer process. All responses of the respondents were imported into Excel software before importing to SPSS 22. Before the analysis, the variables were encoded ( Tables 2 and 3 ) and the data were checked to ensure the validity of each questionnaire. After discarding invalid questionnaires, the final dataset contained 318 questionnaires.   Table 3 Correlations between variables and intention of farmers to produce organic farming.   Based on the data set, further studies can study the relationships between the factors in the TPB-NAM integration model or separate each theory to find the factors that influence intentions to produce organic farming by farmers.

Ethics Statement
The authors kept to all ethical concerns during the data gathering process. The authors got the consent of the respondent when conducting surveys and ensured that all information was used for research purposes and was absolutely confidential.

Declaration of Competing Interest
The authors declare that they have no known competing financial interests or personal relationships which have, or could be perceived to have, influenced the work reported in this article.