Fig 13 is incorrect. The authors have provided a corrected version here.
Citation: The PLOS ONE Staff (2015) Correction: Soil Penetration by Earthworms and Plant Roots—Mechanical Energetics of Bioturbation of Compacted Soils. PLoS ONE 10(9): e0136225. https://doi.org/10.1371/journal.pone.0136225
Published: September 1, 2015
Copyright: © 2015 The PLOS ONE Staff. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited