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The N-P-K soil nutrient balance of Portuguese cropland in the 1950s: The transition from organic to chemical fertilization
Agricultural nutrient balances have been receiving increasing attention in both historical and nutrient management research. The main objectives of this study were to further develop balance methodologies and to carry out a comprehensive assessment of the functioning and nutrient cycling of 1950s ag...
| Autores principales: | , , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
Nature Publishing Group UK
2017
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5556002/ https://www.ncbi.nlm.nih.gov/pubmed/28808244 http://dx.doi.org/10.1038/s41598-017-08118-3 |