Interests

Soil organic matter dynamics: formation and turnover of organic constituents; soil and crop management effects on soil organic matter; organic waste management: direct land application, aerobic composting.

Current Projects

Conservation tillage and cropping effects on formation and turnover of soil organic matter; soil quality comparison on long-term organic farms vs conventional farms; nutrient budget on organic dairy farms in southern Ontario; assessing soil P availability in organically managed soils.

Future Directions

Organic turf production using compost teas, Organic wine grape production under cool climates.