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Adoption of integrated pestmanagement (IPM) practices in the Guatemalan highlands has been limited by the failure of researchers and extensionists to promote genuine farmer participation in their efforts. Some attempts have been made to redress this failure in the diffusion-adoption process, but farmers are still largely excluded from the research process. Understanding farmers' agricultural knowledge must be an early step toward a more participatory research process.With this in mind, we conducted a semi-structured survey of 75 Cakchiquel Maya farmers in Patzún, Guatemala, to begin documenting their pest control practices. Their responses revealed that their understanding of biological and curative pest control is limited. However, their broad knowledge of cultural preventive pest control practices could explain why they had faced few pest problems in their traditional milpa (intercrop of corn, beans, and other edible plants). The majority of these preventive practices are probably efficient and environmentally innocuous. Inglés

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