Dr. Sjoerd Duiker

Associate Professor of Soil Management
Penn State University
408 ASI Builidng
University Park, PA 16802
United States
(w) (814) 863-7637
(m) (814) 404-2605


GNE18-186 Symbiotic Nitrogen Fixation in Non-legumes: N-supply, Yield and Quality Effects in Tomato and Pepper
ONE16-287c Promoting cover crops on grain and vegetable farms in Pennsylvania