This study was meant for research and development with the following objectives: 1) develop a model for the use of chemicals by sugarcane farmers for reducing the consequent health and environmental impacts in Thailand’s Phetchabun province, 2) compare the level of knowledge, attitude, and behavior in practice regarding self-regulation in the use of chemicals among sugarcane farmers before, during, and after using this model. The Delphi technique was employed to collect data, and the concepts of environmental education were applied to develop the model. The sample of phase 1 included 24 experts who made recommendations for model development; they were selected by simple random sampling. Phase 2 involved trials for developing the model for which 36 farmers were selected by multi-stage random sampling by which who had planted sugarcane and whose blood samples, when tested, contained the cholinesterase enzyme at levels either equal to or more than risk level. The tools used for data gathering were interviews, a knowledge test, and attitude and behavior questionnaires with IOC = 0.83, discriminant power = 0.46, difficult value = 0.45, and reliability score = 0.92. The statistics employed for data analysis were frequency, percentage, mean, standard deviation (S.D.), and Paired Samples T-Test. The research findings used to construct a suitable model comprised the following” 1) group responses 2) knowledge construction, and 3) cooperation. The results of evaluation by experts for having a betterquality model showed that were at a high level (mean = 4.33, S.D. = 0.57). The comparisons of the level of knowledge, attitude, and behavior in practice for selfregulation regarding the use of chemicals by sugarcane farmers before, during, and after using this model showed that the level of knowledge, attitude, and behavior in practice of the post-test group were higher than the pre-test group at a statistical significance level of 0.01.

Keywords : Chemicalst; Famers; Environment.