Development of a training manual to enhance agriculturists' knowledge and skills in using African nightcrawler earthworm fertilizer for environmental conservation

The aim of this research was to create a training manual that promotes the use of African nightcrawler earthworm fertilizer for environmental conservation among agriculturists. Additionally, the study aimed to compare the knowledge, attitudes, and skills related to using African nightcrawler earthworm fertilizer for environmental conservation before and after training. The sample included 30 agriculturists from Ban Han, Moo 4, Kwao sub-district, Muang district, Maha Sarakham province. Research instruments included a training manual, knowledge test, attitude test, and skills test related to the use of the fertilizer. Data were analyzed using percentage, mean, standard deviation, and paired t-test with a statistical significance level of .05. The findings were as follows: 1) The training manual was found to be effective, with an efficiency rate of 88.93/81.07, meeting the established criteria. Agriculturists showed a 65.15% improvement in their knowledge of African nightcrawler earthworm fertilizer for environmental conservation after using the manual. 2) The agriculturists' average scores in knowledge, attitude, and practical skills related to using the fertilizer were significantly higher after training, with a statistical significance level of .05.