My expertise lies in biogeochemical cycling of nitrogen, phosphorus, and carbon, and soil trace and heavy metal mobility, fate, and transformations. I utilize this expertise with respect to the utilization of materials that otherwise would go to waste, such as biochar, biosolids, and drinking water treatment residuals, for beneficial reuse in (non) irrigated agroecosystems, disturbed rangelands, mined lands, and forest fire burned areas.
My current research specifically focuses on:
Biochar effects on soil chemistry, fertility, microbiology, water, crop growth, and environmental quality within (agro)ecosystems;
Biochar sorption of heavy metals: quantification and sorption mechanisms in extremely disturbed ecosystems;
The effect of dairy lagoon waste effluent on soil copper chemistry and crop growth, and means of recovering copper effected soils as well as copper from lagoon effluent;
Changes in soil nitrogen, phosphorus, and carbon chemistry within irrigated and non-irrigated (agro)ecosystems;
Soil and irrigation water phosphorus sorption by alum-based water treatment residuals, alum, and polyaluminum chloride.
