Germán is a Microbiologist (2009) with a Master's degree in Agricultural Sciences (Phytotechnics) (2011) from the Federal Rural University of Rio de Janeiro and a PhD in Agronomy (Soils and Plant Nutrition) (2015) from the Superior School of Agriculture "Luiz de Queiroz", University of São Paulo. He develops research and transfer projects in the area of soil-microorganism-plant-environment interaction, specifically seeking to improve fertilization efficiency and modulate crop response to abiotic stress.