Tools used in the research. Tools used in research, part 1: questionnaire for interviews. User research questionnaire is preparing guidelines on the research question based on the conceptual framework and theoretical courses, using all the questions at the end of closed and open-ended. There is a five-part 1: General information of the respondents. Section 2: understanding in the use of chemicals, get rid of the pest part 3 behavior of chemical pest control pest part 4 attitudes about vegetables, organic, non-toxic and chemical pest control pests with part 5 comments and feedback, which is considered the village certificate.Research Ethics Committee people kokna chutklangomhawityalai Mahidol (MU Central-IRB) and in the part of the researchers themselves. To access information and complete details must. The study is to prepare documents and related research before interviews farmers, as well as to observe the procedure and method of production of the farmers. Part 2: tools for analyzing the chemical removal of vegetable pest residues in the Green: GC-MS (with ECD Detector.)
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