Researchers of the Institute for Soil Sciences and the Hungarian University of Agriculture and Life Sciences first detected root-knot nematode (Meloidogyne incognita) infestation at an early stage by measuring the dielectric response of intact root system of cucumber and tomato. The scientific result was published in ”International Agrophysics” journal (IF: 2.2, Q2) in open access form. The stages of nematode infestation in the soil could be tracked by the significant changes in the measured dielectric properties, before the appearance of obvious disease symptoms. Application of the simple, non-destructive method can help in recognizing the damage of soil-borne parasite, contributing to a more efficient nematode control in the growing system.