Modelling Soil Water Retention for Weed Seed Germination Sensitivity to Water Potential
Joint Authors
Bullock, Paul R.
Bullied, W. John
Van Acker, Rene C.
Source
Applied and Environmental Soil Science
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-06
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Earth Science , Water and Environment
Abstract EN
Soil water retention is important for the study of water availability to germinating weed seeds.
Six soil water retention models (Campbell, Brooks-Corey, four- and five-parameter van Genuchten, Tani, and Russo) with residual soil water parameter derivations were evaluated to describe water retention for weed seed germination at minimum threshold soil water potential for three hillslope positions.
The Campbell, Brooks-Corey, and four-parameter van Genuchten model with modified or estimated forms of the residual parameter had superior but similar data fit.
The Campbell model underestimated water retention at a potential less than −0.5 MPa for the upper hillslope that could result in underestimating seed germination.
The Tani and Russo models overestimated water retention at a potential less than −0.1 MPa for all hillslope positions.
Model selection and residual parameter specification are important for weed seed germination by representing water retention at the level of minimum threshold water potential for germination.
Weed seed germination models driven by the hydrothermal soil environment rely on the best-fitting soil water retention model to produce dynamic predictions of seed germination.
American Psychological Association (APA)
Bullied, W. John& Bullock, Paul R.& Van Acker, Rene C.. 2012. Modelling Soil Water Retention for Weed Seed Germination Sensitivity to Water Potential. Applied and Environmental Soil Science،Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-500035
Modern Language Association (MLA)
Bullied, W. John…[et al.]. Modelling Soil Water Retention for Weed Seed Germination Sensitivity to Water Potential. Applied and Environmental Soil Science No. 2012 (2012), pp.1-13.
https://search.emarefa.net/detail/BIM-500035
American Medical Association (AMA)
Bullied, W. John& Bullock, Paul R.& Van Acker, Rene C.. Modelling Soil Water Retention for Weed Seed Germination Sensitivity to Water Potential. Applied and Environmental Soil Science. 2012. Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-500035
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-500035