TY  - RPRT
TI  - Root-zone acidity affects relative uptake of nitrate and ammonium from mixed nitrogen sources
AU  - Vessey, J. K.
AU  - Henry, L. T.
AU  - Chaillou, S.
AU  - Raper, C. D. Jr
AU  - Raper CD, J. r.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/20040121801
ID  - 20040121801
ER  -