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Organic farming effects on clay dispersion in carbon-exhausted soils

Schjønning, P.; de Jonge, L.W.; Olesen, J.E. and Greve, M.H. (2009) Organic farming effects on clay dispersion in carbon-exhausted soils. ICROFS News, November 2009 (4), pp. 8-10.

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Online at: http://www.icrofs.org/pdf/icrofsnews/2009_4.pdf

Summary

Many Danish soils are depleted in organic matter (OM) after decades of intensive cereal cultivation (Schjønning et al., 2009). In this paper we show that clay particles (colloids) in soils that are low in OM content are easily dispersed in the soil water, which in turn has important effects on soil ecosystem functions and services. Organic farming systems generally tend to increase soil OM contents and may thus mitigate the negative effects.


EPrint Type:Newspaper or magazine article
Subjects:"Organics" in general
Crop husbandry > Production systems
Soil > Soil quality
Farming Systems
Research affiliation: Denmark > DARCOF III (2005-2010) > CROPSYS - The effect of cropping systems on production and the environment
Deposited By: Schjønning, Senior Soil Scientist Per
ID Code:18442
Deposited On:18 Mar 2011 12:05
Last Modified:18 Mar 2011 12:05
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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