Comments on "synthetic nitrogen fertilizers deplete soil nitrogen: a global dilemma for sustainable cereal production," by R.L. Mulvaney, s.a. Khan, and T.R. Ellsworth in the Journal of Environmental Quality 2009 38:2295-2314.
Powlson
D S
DS
Jenkinson
D S
DS
Johnston
A E
AE
Poulton
P R
PR
Glendining
M J
MJ
Goulding
K W T
KW
D002523:Edible Grain / Q000254:growth & development; D005308:Fertilizers; D009584:Nitrogen / Q000032:analysis*; D012987:Soil / Q000032:analysis*
D005308:Fertilizers; D012987:Soil; D009584:Nitrogen