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Using secondary information sources to improve the within-field soil textural mapping in a layered alluvial soil

WAU Vitharana, Marc Van Meirvenne UGent and Liesbet Cockx UGent (2005) Precision agriculture '05. p.425-432
abstract
To evaluate the potential for precision agriculture, we explored the usefulness of secondary information to improve soil texture mapping. Our study area was an 11.5 ha field in a polder area where soils are known to be spatially heterogeneous, especially in the subsoil. Apparent electrical conductivity (ECa) was measured with an EM38DD electromagnetic induction instrument. The geometric mean of the ECa measured in both vertical and horizontal orientations showed a strong correlation with subsoil clay content (r = 0.89), but the correlation was less with the topsoil clay content (r = 0.36). Therefore another secondary information source was used to support the mapping of the topsoil clay content: the gravimetric water content at wilting point (theta g ((-1.5) (MPa))) which showed a much stronger correlation (r = 0.92) with the clay content. Thereafter, topsoil and subsoil clay maps were obtained using 23 clay analyses, 77 theta g ((-1.5 MPa)) and 4048 ECa measurements and employing standardized ordinary co-kriging. Finally, three potential management zones were identified based on both top and subsoil clay content. This study indicated the importance of including the subsoil variability to delineate potential management zones.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
within-field scale soil mapping, electromagnetic induction, apparent electrical conductivity, geostatistical interpolation, potential management zones
in
Precision agriculture '05
editor
JV Stafford
pages
425 - 432
publisher
Wageningen Academic Publishers
place of publication
Wageningen, The Netherlands
conference name
5th European conference on Precision Agriculture ; 2nd European Conference Precision Livestock Farming
conference location
Uppsala, Sweden
conference start
2005-06-09
conference end
20065-06-12
Web of Science type
Article
Web of Science id
000233423700051
ISBN
90-76998-69-8
language
English
UGent publication?
yes
classification
P1
id
405626
handle
http://hdl.handle.net/1854/LU-405626
date created
2008-05-14 16:22:00
date last changed
2010-11-25 12:59:43
@inproceedings{405626,
  abstract     = {To evaluate the potential for precision agriculture, we explored the usefulness of secondary information to improve soil texture mapping. Our study area was an 11.5 ha field in a polder area where soils are known to be spatially heterogeneous, especially in the subsoil. Apparent electrical conductivity (ECa) was measured with an EM38DD electromagnetic induction instrument. The geometric mean of the ECa measured in both vertical and horizontal orientations showed a strong correlation with subsoil clay content (r = 0.89), but the correlation was less with the topsoil clay content (r = 0.36). Therefore another secondary information source was used to support the mapping of the topsoil clay content: the gravimetric water content at wilting point (theta g ((-1.5) (MPa))) which showed a much stronger correlation (r = 0.92) with the clay content. Thereafter, topsoil and subsoil clay maps were obtained using 23 clay analyses, 77 theta g ((-1.5 MPa)) and 4048 ECa measurements and employing standardized ordinary co-kriging. Finally, three potential management zones were identified based on both top and subsoil clay content. This study indicated the importance of including the subsoil variability to delineate potential management zones.},
  author       = {Vitharana, WAU and Van Meirvenne, Marc and Cockx, Liesbet},
  booktitle    = {Precision agriculture '05},
  editor       = {Stafford, JV},
  isbn         = {90-76998-69-8},
  keyword      = {within-field scale soil mapping,electromagnetic induction,apparent electrical conductivity,geostatistical interpolation,potential management zones},
  language     = {eng},
  location     = {Uppsala, Sweden},
  pages        = {425--432},
  publisher    = {Wageningen Academic Publishers},
  title        = {Using secondary information sources to improve the within-field soil textural mapping in a layered alluvial soil},
  year         = {2005},
}

Chicago
Vitharana, WAU, Marc Van Meirvenne, and Liesbet Cockx. 2005. “Using Secondary Information Sources to Improve the Within-field Soil Textural Mapping in a Layered Alluvial Soil.” In Precision Agriculture  ’05, ed. JV Stafford, 425–432. Wageningen, The Netherlands: Wageningen Academic Publishers.
APA
Vitharana, W., Van Meirvenne, M., & Cockx, L. (2005). Using secondary information sources to improve the within-field soil textural mapping in a layered alluvial soil. In JV Stafford (Ed.), Precision agriculture  ’05 (pp. 425–432). Presented at the 5th European conference on Precision Agriculture ; 2nd European Conference Precision Livestock Farming, Wageningen, The Netherlands: Wageningen Academic Publishers.
Vancouver
1.
Vitharana W, Van Meirvenne M, Cockx L. Using secondary information sources to improve the within-field soil textural mapping in a layered alluvial soil. In: Stafford J, editor. Precision agriculture  ’05. Wageningen, The Netherlands: Wageningen Academic Publishers; 2005. p. 425–32.
MLA
Vitharana, WAU, Marc Van Meirvenne, and Liesbet Cockx. “Using Secondary Information Sources to Improve the Within-field Soil Textural Mapping in a Layered Alluvial Soil.” Precision Agriculture  ’05. Ed. JV Stafford. Wageningen, The Netherlands: Wageningen Academic Publishers, 2005. 425–432. Print.