The association between health literacy and pesticide use behaviors among sweet corn farmers in the Pak Chong district of Thailand: a cross-sectional study

Background: Pesticide toxicity is an important health problem in Thailand due to the intensive use of hazardous pesticides. This study aimed to determine and discuss patterns of pesticide use, health literacy, pesticide use behaviors and whether there is an association between health literacy and pesticide use behaviors among sweet corn farmers in the Pak Chong district, Thailand. Methods: This work was carried out between May 2017-July 2017 and 161 participants were enrolled. Participant questionnaires were completed during face-to-face interviews. Results: This study found the response rate was 98.98%. 161 farmers were interviewed about patterns of chemical pesticide use. Two of the pesticides used in the pre-planting phase were moderately toxic: paraquat (used by 55.2% of farmers) and imidacloprid (used by 15.5% of farmers). In the pre-emergence phase, participants reported using two moderately toxic pesticides: alachlor (used by 48.8% of farmers) and chlorpyrifos (used by 2.4% of farmers). At the post-emergence phase, participants reported using six moderately toxic pesticides: chlorpyrifos (used by 60.7% of farmers), paraquat (used by 38.1% of farmers), imidacloprid (used by 7.2% of farmers), 2-4D (used by 3.6% of farmers), abamectin (used by 3.6% of farmers) and cypermethrin (used by 1.2% of farmers). Health literacy levels were moderate level (Mean score = 91.62, SD = ± 7.06) and pesticide use behaviors were low level (Mean score = 67.80, SD = ± 4.04). When examining the association between health literacy and pesticide use behaviors, we found that functional literacy was significantly associated with pesticide use behaviors. This suggests that health literacy, which includes self-management and decision-making skills, should be given greater attention as pesticide use behaviors were unsafe. Conclusion: It may be necessary to develop approaches to reduce pesticide use and promote health literacy, thereby protecting farmers, consumers, the environment (soil, water, and air) and ecosystems from pesticide-related hazards.