The influence of nitrogen and potassium supply on the ammonium content of maize (Zea mays L.) leaves including a comparison of measurements made in vivo and in vitro

@article{Gerends2004TheIO,
  title={The influence of nitrogen and potassium supply on the ammonium content of maize (Zea mays L.) leaves including a comparison of measurements made in vivo and in vitro},
  author={J{\'o}ska Gerend{\'a}s and Robert Ratcliffe and Burkhard Sattelmacher},
  journal={Plant and Soil},
  year={2004},
  volume={173},
  pages={11-20}
}
Maize seedlings were grown on either nitrate or ammonium, at two different potassium levels, and the growth analysis revealed that ammonium supply reduced shoot dry matter particularly under conditions of limited potassium supply. The ammonium content of the leaves was determined in vitro, using continuous flow analysis of plant extracts, and in vivo using 14N nuclear magnetic resonance (NMR) spectroscopy. The conventional continuous flow analysis procedure was modified by the inclusion of a… CONTINUE READING