Overview of the greenhouse experiment aiming to study the effect of single and combined inoculation of Trichoderma and AMF on maize performance and belowground microbial communities. After 7 weeks of maize growth, effect of different inoculations on soil microbial and plant parameters (e.g. microbiota composition, AMF/Trichoderma abundance, AMF colonization, total root length and inoculation response based on shoot/root dry weight) were evaluated.