'Nitrate leaching increased' presentation slideshows

P. Schweigert* and R.R. van der Ploeg Institute of Soil Science, University of Hannover,

Monitoring soil mineral nitrogen concentration in Germany: Preliminary results and some methodical challenges. P. Schweigert* and R.R. van der Ploeg Institute of Soil Science, University of Hannover, Hannover, Germany. N surplus of agricultural land in Germany. Consequences of N surplus.

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