T. Willson

Enhancing the mineralizable nitrogen pool through substrate diversity in long-term cropping systems

R. Harwood, K. Kızılkaya, José E. Sánchez, 2001 .

Managing soil carbon and nitrogen for productivity and environmental quality

G. Robertson, R. Harwood, E. Paul, 2004 .

Biologically active soil organic matter fractions in sustainable cropping systems

R. Harwood, E. Paul, T. Willson, 2001 .

Orchard Floor and Nitrogen Management Influences Soil and Water Quality and Tart Cherry Yields

R. Harwood, K. Kızılkaya, M. Whalon, 2003 .

Corn root effects on the nitrogen-supplying capacity of a conditioned soil

R. Harwood, E. Paul, J. Smeenk, 2002 .