Abstract

Soil strength proved much more sensitive to changes in water content than draught requirement. Consequently, model predictions of specific draught were much higher than measured values in soil with high cohesion values. A possible explanation is that specific draught mainly depends on inter-aggregate strength, while the intra-aggregate strength may be considerably higher. Over all tillage occasions, specific draught was much more strongly correlated to cohesion than to penetration resistance. There was also a clear correlation between draught and soil clay content. Multiple regression including cohesion and soil water content resulted in a much higher coefficient of determination than regression with cohesion only. The results indicate that neither shear vane nor penetrometer measurements are sufficient to predict draught requirement, and it is desirable to develop a simple yet reliable field method that can be used for this purpose. More general estimates of fuel consumption can probably be made based on the soil clay content only. (C) 2010 Elsevier B.V. All rights reserved.

Keywords

Cohesion; Penetration resistance; Soil water content; Clay content; Mouldboard ploughing

Published in

Soil and Tillage Research
2011, Volume: 111, number: 2, pages: 219-223

SLU Authors

• Arvidsson, Johan

  • Department of Soil and Environment, Swedish University of Agricultural Sciences
    

• Keller, Thomas

  • Department of Soil and Environment, Swedish University of Agricultural Sciences
    
  • Agroscope

UKÄ Subject classification

Agricultural Science


Publication identifier

DOI: https://doi.org/10.1016/j.still.2010.10.005

Permanent link to this page (URI)

https://res.slu.se/id/publ/33356