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| Riley, Hugh; Pommeresche, Reidun; Eltun, Ragnar; Hansen, Sissel; Korsaeth, Audunk. |
| Abstract In order to assess long-term effects on productivity, environmental impacts and soil fertility of contrasting farming practices, six cropping systems, ranging from conventional arable without livestock to organic mixed dairy farming with few arable crops, have been compared since 1989 on a loam soil. A decline in soil structure quality was found in a conventional arable system with annual ploughing with no rotational grass. This system had higher bulk density and mean aggregate size than other systems, and lower levels of plant available water and aggregate stability. Opposite trends were related to the proportion of grass leys in the other systems and to their levels of soil organic matter. The latter declined markedly over 15 years in the... |
| Tipo: Journal paper |
Palavras-chave: Soil; Farming Systems; Soil biology. |
| Ano: 2008 |
URL: http://orgprints.org/13474/1/Riley_et_al._2008_AGEE3129.pdf |
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