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| Bosshard, C.; Frossard, E.; Dubois, D.; Mäder, P.; Manolov, I.; Oberson, A.. |
| Physically separated soil organic matter (SOM) fractions may take different functions in soil N dynamics. We studied the effect of long-term organic matter (OM) management and different soil biological activity on the incorporation of N added with organic and mineral amendments into aggregate fractions and size density fractions. We applied 15N-labeled sheep feces, urine, and mineral fertilizer to microplots installed in plots of conventional (CONMIN) and bio-organic (BIOORG) cropping systems. Soil sampled 112 d after amendment was separated into macro-, microaggregates, and microstructures. Aggregates were then fractionated into free light fraction (LF), intra-aggregate particulate organic matter (iPOM),and the mineral-associated organic matter fraction... |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2008 |
URL: http://orgprints.org/26387/1/Bosshard_et_al_2008_SSSAJ_72_POM.pdf |
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