Abstract
SummaryUsing aggregates from 2 clay soils over a range of water contents from pF 1 to oven dry, shrinkage and water release curves were measured and pore size distributions found by mercury porosimetry after critical point and after freeze drying.Freeze drying caused less shrinkage, the maximum being 6 cm3 100 g−1 from pF 1, but gave a large increase, up to 10 cm3 100 g−1, of pores in the 0.1–10 μm size range.Critical point drying produced more shrinkage from pF 1, more than half of which was attributed to loss of interlamellar water and the rest to the collapse of pores larger than 10 μm.In these clays the volume of pores of over 3 μm diameter was very small (<3 cm3 100 g−1) and most of the plant available water was released by collapse of narrower pores and not by pore emptying.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
