The caption highlights interesting aspects about toxicity and its measurement. Some arguments which could be ethnographically fleshed out--the idea of knowledge about the terrain shaping the knowledge about toxicity is a compelling one--could this be an argument about multispecies encounters where human knowledge about toxicity emerges in relation to nonhuman materialities like the height of the root, etc.?
The caption is elaborate enough, however, the narratives of toxcities can be made explicit.