The 59th Scientific Session of the Institute of Plant Protection – National Research Institute (IPP – NRI) in Poznań, took place on 12–14 February 2019. The contribution of IPP from SENSAGRI project includes the oral presentation "Spectral data obtained from the satellite and drones as know-how element of modern agriculture" and a poster titled "Use of spectral detention systems for evaluate conditions of cereal plants as affected of weed entity and variability of crop density".