Root Penetration in Heavily Compacted Soil Systems

Correction: Soil Penetration by Earthworms and Plant Roots—Mechanical Energetics of Bioturbation of Compacted Soils

Fig 13 is incorrect. The authors have provided a corrected version here. Fig 13. Mechanical energy to create a burrow of 1 m length and 1.2 mm radius as a function of normalized water content using a penetration model and a fracture model. Both models were conducted for a worm of r = 1.2 mm [50] for soils with clay contents ranging from 15–25% [21, 50–52]. open access article distributed under ...

Soil Penetration by Earthworms and Plant Roots—Mechanical Energetics of Bioturbation of Compacted Soils

We quantify mechanical processes common to soil penetration by earthworms and growing plant roots, including the energetic requirements for soil plastic displacement. The basic mechanical model considers cavity expansion into a plastic wet soil involving wedging by root tips or earthworms via cone-like penetration followed by cavity expansion due to pressurized earthworm hydroskeleton or root r...

Winter Wheat Growth in Artificially Compacted Soil

Behavior of Compacted Lime-soil Columns

This study presents the results of large scale laboratory model tests to investigate the behavior of Compacted Lime – Well-graded Soil (CL-WS) rigid stone columns in soft soils. The  unit cell idealization is used for construction of composite specimens by evaluating the influence of different parameters such as the diameter of the column (D), the slenderness ratio (L/D) and the area ratio (Ar)...

Biological control of weeds in compacted soil cultures.

Biological Control of Weeds in Compacted Soil Cultures: V. P. Sokoloff 271 Technical Papers Absorption Spectra of Chlorophylls in Solutions at -Low Temperatures-Equilibria Between Isomers: Simon Freed and Kenneth M. Sancier _ 275 The Purlnonay Circulation as a Source of Leucocytes-bid Platelets in Man: H. R. Bierman, K. H. Kelly/,F. W. King, and N. L. Petro,kis 276 Effects of Male Hormone upon ...