Browsing by Keyword (GND)
| Obstbaum [1] |
| Oman [3] |
| Omangebirge [1] |
| Ouagadougou [1] |
| Pakistan [2] |
| Perlhirse [3] |
| Phosphatdüngung [2] |
| Phosphor [1] |
| Produktivitätszuwachs [1] |
| Quebracho [1] |
| Radiometrie [1] |
| Rhizosphäre [2] |
| Sahel [1] |
| Semiarides Gebiet [1] |
| Shifting cultivation [1] |
| Stadtnahe Landwirtschaft [2] |
| Stallmist [3] |
| Städtische Landwirtschaft [5] |
| Stickstoff [2] |
| Stickstoffdüngung [2] |