Fecha de publicación: 27/06/2024 Fuente: Wipo "precision farming" Fiber-optic bundles for infrared spectral analysis of media. The fiber-optic bundles can be used in infrared probes configured to be inserted in media for in-situ characterization of the media. The fiber-optic bundles can include a plurality of optical fibers arranged in a spatial pattern at a sampling end of the bundle to improve a signal of infrared spectral measurements. In-situ probes of the present disclosure can be used for precision farming practices to improve soil health and increase crop yields.