Cocoa production in Latin America is affected by various diseases that are feared to spread to other continents in the future. In this thesis, the perception of two groups of farmers (one group is using much and one group using less agrochemical input and/or is certified organic, in total 31 interview-partners) towards pests, diseases and agrochemical input in their cacao plots was investigated using semi-qualitative interviews, freelists, participant observation and seasonal calendars from February to June 2011 in Tabasco, Southern Mexico. The results suggest that the word plaga (pest) is used mainly for biotic threats to cacao harvest. Most prominent in the freelists were Frosty pod disease (Moniliophthora roreri) with 93% of the respondents mentioning it, Black pod disease (Phytophthora palmivora) with 86% and squirrels (Scireus sp.) with 79%. Especially the recently (2005) introduced Frosty pod disease (Moniliophthora roreri) and squirrels are considered the most harmful obstacles to cacao production, mainly because treatments are limited to time and labor intense cultural measures. Little knowledge about beneficial insects was found and only in the group lowinput/organic. Insecticides were used by farmers of the highinput group mainly against ants that probably do not cause the assumed damage but associated aphids that were not perceived as major pests. The findings also suggest that cacao cultivation in Tabasco as such is very vulnerable and especially organic cacao cultivation is hardly present at all. Preventing cacao farmers to abandon their plots or change to other, ecological problematic cultures like sugarcane cultivation or pastures for cattle ranching, should be more focused.