[1645] - Construction of Minirhizotron Facilities for Investigating Root Zone Processes

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Cai, G., Vanderborght, J., Klotzsche, A., van der Kruk, J., Neumann, J. ., Hermes, N., Vereecken, H., 2016. Construction of Minirhizotron Facilities for Investigating Root Zone Processes. Vadose Zone Journal, 15 (9), . DOI: 10.2136/vzj2016.05.0043.
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Title(s):Main Title: Construction of Minirhizotron Facilities for Investigating Root Zone Processes
Description(s):Abstract: Minimally invasive monitoring of root development and soil states (soil moisture, temperature) in undisturbed soils during a crop growing cycle is a challenging task. Minirhizotron (MR) tubes offer the possibility to view root development in situ with time. Two MR facilities were constructed in two different soils, stony vs. silty, to monitor root growth, root zone processes, and their dependence on soil water availability. To obtain a representative image of the root distribution, 7-m-long tubes were installed horizontally at 10-, 20-, 40-, 60-, 80-, and 120-cm depths. A homemade system was developed to install MR tubes in the silty soil in horizontally drilled straight holes. For the stony soil, the soil rhizotubes were installed in an excavated and subsequently backfilled pit. In both facilities, three subplots were established with different water treatments: rain sheltered, rainfed, and irrigated. To monitor soil moisture, water potential, and soil temperature, time domain reflectometer probes, tensiometers, and matrix water potential sensors were installed. Soil water content profiles in space and time were obtained between two MR tubes using cross-hole ground-penetrating radar along the tubes at different depths. Results from the first growing season of winter wheat (Triticum aestivum L.) after installation demonstrate that differences in root development, soil water, and temperature dynamics can be observed among the different soil types and water treatments. When combined with additional measurements of crop development and transpiration, these data provide key information that is essential to validate and parameterize root development and water uptake models in soil–vegetation–atmosphere transfer models.
Identifier(s):DOI: 10.2136/vzj2016.05.0043
Responsible Party
Creator(s):Author: Gaochao Cai
Author: Jan Vanderborght
Author: Anja Klotzsche
Author: Jan van der Kruk
Author: Joschka Neumann
Author: Normen Hermes
Author: Harry Vereecken
Publisher:Soil Science Society of America
TR32 Topic:Soil
Related Sub-project(s):B4
Subject(s):CRC/TR32 Keywords: Soil Water Content, Root Growth, GPR, Soil Temperature
File Details
File Name:ConstructionofMinirhizotronFacilitiesforInvestigatingRootZoneProcesses.pdf
Data Type:Text
File Size:3949 kB (3.856 MB)
Date(s):Date Accepted: 2016-07-13
Mime Type:application/pdf
Download Permission:Free
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Ellebach
Measurement Location:Selhausen
Specific Informations - Publication
Article Type:Journal
Source:Vadose Zone Journal
Number Of Pages:13
Metadata Details
Metadata Creator:Gaochao Cai
Metadata Created:2017-05-14
Metadata Last Updated:2017-06-01
Funding Phase:2
Metadata Language:English
Metadata Version:V41
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