This dataset includes the data analysed in the manuscript "Attraction of entomopathogenic nematodes to black truffle and its volatile organic compounds: A new approach for truffle beetle biocontrol". It includes two excel-files with the following information: 1) the number of nematodes that moved to each arm of the olfactometer, 2) and the chemotaxis index values

Description of methods used for collection-generation of data: For the olfactometer assay, data were obtained counting the number of nematodes that moved to the different arms of the olfactometer (which one included a different treatment). The objective was to determine if nematodes are attracted or repelled by truffles. For the chemotaxis assay, the number of nematodes that displaced to the treated or control areas was counted. Then, the chemotaxis index was calculated for each product tested. The objective was to determine if nematodes are attracted or repelled by different volatile organic compounds emmited by truffles.