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Importance of sources of variability,scales and experimental design: A case study about the effects of biochar and slurry application on soil properties in agricultural silty loam soils
Authors:Bernard Ludwig  Xiaona Song  Anna Gunina  Isabel Greenberg  Michaela A. Dippold  Hans-Peter Piepho
Affiliation:1. Department of Environmental Chemistry, University of Kassel, Witzenhausen, Germany;2. Department of Environmental Chemistry, University of Kassel, Witzenhausen, Germany

Department of Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany

Contribution: Data curation, ​Investigation, Validation, Writing - original draft;3. Department of Environmental Chemistry, University of Kassel, Witzenhausen, Germany

Contribution: ​Investigation, Writing - review & editing;4. Department of Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany

Contribution: Writing - review & editing;5. Institute of Crop Science, Biostatistics Unit, University of Hohenheim, Stuttgart, Germany

Contribution: Conceptualization, Validation, Writing - review & editing

Abstract:
Keywords:aggregates  biochar  experimental design  field scale  generalization  naturally-occurring variability  random intercept model  sampling design  slurry
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