Dr. Barbara Simon’s main research interest is the examination of the effects of long-term soil tillage treatments on the soil physical (penetration resistance, bulk density, etc.), chemical (pH, humus quality, organic carbon content and stock, etc.), and biological parameters (earthworm abundance, biomass, species, and soil microbial respiration, etc.). She also examines the soil biological parameters related to different land use (grassy, woody vegetation, arable land, urban, etc.) and application of different mulching materials (straw, deciduous tree leaves, etc.).