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The goals of the research on "Developing a Traceability System for Safe Vegetables of Smart Farmers in Nakhon Pathom Province" were: 1) to develop a traceability system for the safe vegetables of the smart farmers in Nakhon Pathom province, 2) to evaluate the satisfaction with the performance of the traceability system of the safe vegetables of the smart farmers in Nakhon Pathom province and 3) to compare the satisfaction with the performance of the traceability system of the safe vegetables of the smart farmers in Nakhon Pathom province, classified by personal factors. A mixed methods approach, combining qualitative and quantitative research was used in the study.
The findings revealed that: (1) The farmers growing safe vegetables in Nakhon Pathom wanted to use the safe vegetables traceability system to help them manage data and provide relevant information to consumers via QR codes in order to increase their purchasing confidence. In addition, the results of the development and evaluation of the system's performance by experts showed that the overall efficiency of the system is at the highest level ( = 4 . 7 5 , S.D.= 0 . 4 8 ) , the efficiency of the performance by function ( = 4 . 8 3 , S.D.= 0 . 3 8 ) and the efficiency of the ease of use of the system ( = 4 . 7 0 , S.D.= 0 . 5 3 ) were all at the highest levels, (2) the 36 farmers who grew safe vegetables had overall satisfaction with the traceability system at a high level ( = 4.10, S.D.= 0.17). From highest to lowest satisfaction, the following aspects were ranked: functionality according to the system’s function ( = 4.20, SD = 0.27), aspect that meets the needs of the system user ( = 4.09, SD = 0.34), ease of use ( = 4.08, SD = 0.24) and information security in the system ( = 4.04, SD = 0.43). In addition, 400 consumers of safe vegetables in Nakhon Pathom province expressed high levels of overall satisfaction with the system ( = 4.29, SD = 0.31). They showed a high level of satisfaction with system efficiency at a high level ( = 4.29, SD = 0.36), and they were also very satisfied with the system’s suitability ( = 4.29, SD = 0.44), and (3) the results of a comparison of satisfaction with the traceability system for safe vegetables among 36 smart farmers classified by personal factors indicated a statistically significant difference in satisfaction at the 0.05 level by sex, residence, and age.
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