Biblio
E
G. J. Pirelli, Hart, J. M., Filley, S. J., Porath, M. L., Bohle, M., and Carr, J. B.,
“Early Season Forage for Western Oregon Pastures.”,
Extension Publication 8852-E , 2004.
N. P. Anderson, Hart, J. M., D., H., Sullivan, D. M., Christensen, N. W., and Pirelli, G. J.,
“Evaluating Soil Nutrients and pH by Depth”, 2010.