The experimental site in Lusatia was established in April 1996
after an initial application of 15 tha−1 lime (41% CaO) and
N/P/K fertilizer (100/100/100 kg ha−1) in autumn 1995. Between
1996 and 1998 N/P/K fertilizer was applied in alleys applied at
various amounts cumulating to about 220/190/240 kg ha−1. In
time period referred to in the present study alfalfa was fertilized
annually, but only initially nitrogen was included (1999:
30/20/85 kg ha−1, 2000: 0/25/100 kg ha−1, 2001: 0/25/95 kg ha−1,
2002: 0/30/175 kg ha−1).