 |
| Titel |
Grapevine water absorption in different soils. A spatio-temporal analysis. |
| VerfasserIn |
Luca Brillante, Benjamin Bois, Jean Lévêque, Olivier Mathieu |
| Konferenz |
EGU General Assembly 2015
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250114124
|
| Publikation (Nr.) |
 EGU/EGU2015-14423.pdf |
|
|
|
|
|
| Zusammenfassung |
| Hillslope vineyards show complex water dynamics between soil and plants. To gain further
insight of this relationship, 8 grapevine plots were monitored during two vintages
(2011-2013), on Corton Hill, Burgundy, France. Grapevine water status was monitored
weekly by surveying water potential, and at harvest, using δ13C analysis of grape juice. Soil
volumetric humidity was also measured weekly, using TDR probes. A pedotransfer function
was developed to transform Electrical Resistivity Tomography (ERT) into Soil Volume
Water and therefore to spatialise and describe variations in space and time in the
Fraction of Transpirable Soil Water (FTSW). During the two years of monitoring,
grapevines experienced great variation in water status, which ranged from low to
substantial water deficit. With this freshly developed method, it was possible to
observe differences in water absorption pattern by roots, in different soils, and at
different depth. Great heterogeneity was observed, both laterally and vertically in
grapevine water absorption. The contribution of each soil region to plant water
status varies according to grapevine water status. It is different between day and
night and depends from soil characteristics. It is to our knowledge the first time
that water absorption by grapevine is revealed in space (2D) and time, and has
therefore allowed a deeper comprehension of plant and soil dynamics in grapevine. |
|
|
|
|
|
|