Dr. Habil Hosam Bayoumi Hamuda is a professor at Obuda University. His investigations are on the role of waste management, on soil quality, fertility, the crop production and environmental impacts related to the application of organic wastes to soil to assess: Soil quality, microbial inoculants; nitrification inhibitors and crop quality; Monitorization of organic matter; Measurements of rhizosphere and soil microbial biomass and enzymatic activities in wastewater sludge treated soils; Root systems and microbial composition in the polluted environment.