It is widely known that systematically developed training manuals can be used to improve knowledge and practical skills and promote positive attitude of trainees. This research thus aimed to develop a training manual to help reduce the use of pesticides by para rubber farmers in Nonkheng Sub-district, So Phisai District, Bueng Khan Province, Thailand. The research was divided in to 3 stages. The first stage investigated the scenarios in which pesticides were used of the para rubber famers while the second stage dealt with the development of a training manual for promoting the reduction of the use of pesticides and hazardous chemicals by the farmers. The final stage was the evaluation for the efficiency of the developed training manual by applying it with 48 volunteered para rubber famers for 2 days. The findings revealed that the training manual had an efficiency of index at 80.38/80.89. After training with the manual, the farmers’ levels of knowledge increased tal 67.40%, while the overall post-test scores on knowledge, attitude, and practice skills in reducing the use of pesticides were found to be significantly higher (p < 0.05) than those of the pre-test. It can be concluded that the developed training manual can be effectively used to improve the knowledge, attitude, and practical skills of the trainees.
This research aimed to develop a green school training manual for high school students in Pracharat Wittaya Serm School with an efficiency index at a rate of 80/80. The scores of knowledge, attitudes, and participation of the research participants gauged before and after the training were compared. The simple random sampling method was used to recruit a group of 54 student samples from Pracharat Wittayaserm School in the first semester of the academic year 2021. The research instruments consisted of The Green School Training Manual, The Knowledge Testing Form, The Attitude Testing Form, and The Participation Testing Form. The statistics used in the data analysis were frequency, Percentage, mean, standard deviation, and paired t-test. It was found that the efficiency of the training manual was 80.45/82.60, and the efficiency Index (E.I.) was 0.5840. These statistics indicate that the students had a 58.40 percent of knowledge progression. It was also observed that the average post-test scores of knowledge, skills, and environmental management participation were higher than the pre-tests scores with the significance at the level of 0.05.
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