Table 14.3 - Measured nitrogen leaching rates from Danish agricultural and non-agricultural areas
Source: MiljØstyrelsen, 1991
  | N-leaching (kg N/ha/year) | |||
---|---|---|---|---|
Nitrate | Total N Average | |||
Crop | Manure application | Range | Average | |
Natural areas | no | 0.53.3 | 2.5 (6) | - |
Green fallow | no | 25 | 4 (4) | - |
Permanent grass | no | 835 | 16 (4) | - |
Mixed clover and grass | no | 25 | 25 (1) | 48 (1) |
Winter crops and rape | no | 3944 | 41 (3) | 49 (2) |
Winter crops and rape | yes | 2988 | 62 (6) | 78 (6) |
Spring barley | no | 19166 | 72 (12) | 94 (11) |
Spring barley | yes | 48147 | 86 (5) | 106 (5) |
Root crops | yes | 28154 | 88 (6) | 111 (6) |
Note: Numbers in parentheses indicate sample size