Research Background

"Development and Use of the OSU Organic Fertilizer and Cover Crop Calculator". N. Andrews, D.M. Sullivan, J.W. Julian and K.E. Pool. 2011

"Predicting Plant-Available Nitrogen Release From Cover Crop Residues". Dan M. Sullivan, Ronjon Datta, Nick Andrews, and Kristin E. Pool. 2011

"Estimating Plant-Available Nitrogen Release from Manures, Composts, and Specialty Products". Eric S. Gale, Dan M. Sullivan, Craig G. Cogger, Andy I. Bary, Delbert D. Hemphill, and Elizabeth A. Myhre. 2006

"Estimating N contribution from organic fertilizers and cover crop residues using online Calculators". Dan M. Sullivan and Nick A. Andrews, John M. Luna, and John P.G. McQueen. 2010