2022 article
Adjusting the N fertilizer factor based on soil health as indicated by soil-test biological activity
AGRICULTURAL & ENVIRONMENTAL LETTERS, Vol. 7.
By: A. Franzluebbers, R. Shoemaker*, J. Cline*, B. Lipscomb*, C. Stafford*, B. Farmaha *, R. Waring*, N. Lowder*, W. Thomason*, M. Poore