Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards
9 pages, 7 figures.
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Elsevier
2011-09
|
| Subjects: | Deficit irrigation, Maximum trunk diameter, Sap flux, Signal intensity, Tree water consumption, |
| Online Access: | http://hdl.handle.net/10261/44445 http://dx.doi.org/10.13039/501100007273 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100011011 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
dig-irnas-es-10261-44445 |
|---|---|
| record_format |
koha |
| spelling |
dig-irnas-es-10261-444452018-09-11T08:40:28Z Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards Fernández Luque, José Enrique Moreno Lucas, Félix Martín Palomo, Mª José Cuevas Sánchez, Mª Victoria Torres Ruiz, José Manuel Moriana, Alfonso Instituto de Investigación y Formación Agraria y Pesquera (España) Comisión Interministerial de Ciencia y Tecnología, CICYT (España) European Commission Junta de Andalucía Deficit irrigation Maximum trunk diameter Sap flux Signal intensity Tree water consumption 9 pages, 7 figures. Sap flux (Q) and trunk diameter variation (TDV) are among the most useful plant-based measurements to detect water stress and to evaluate plant water consumption. The usefulness of both methods decreases, however, when applied to species that, like olive, have an outstanding tolerance to drought and a remarkable capacity to take up water from drying soils. Evidence shows that this problem is greater in old, big trees with heavy fruit load. Our hypothesis is that the analysis of simultaneous measurements of Q and TDV made in the same trees is more useful for assessing irrigation needs in old olive orchards than the use of any of these two methods alone. To test our hypothesis, we analysed relations between Q, TDV, midday stem water potential ( stem), relative extractable water and atmospheric demand in an olive orchard of 38-year-old ‘Manzanilla’ trees with heavy fruit load. Measurements were made during one irrigation season (May–October), in fully irrigated trees (FI, 107% of the crop evapotranspiration, ETc, supplied by irrigation), and in trees under two levels of deficit irrigation (DI60, 61% ETc; DI30, 29% ETc). Time courses of Q and TDV measured on days of contrasting weather and soil water conditions were analysed to evaluate the usefulness of both methods to assess the crop water status. We calculated the daily tree water consumption (Ep) from Q measurements. For both DI treatments we calculated a signal intensity by dividing daily Ep values of each DI tree by those of the FI tree (SI−Ep ).Wedid the same with the maximum daily shrinkage (MDS) values (SI−MDS). Neither SI−Ep nor SI−MDS rendered useful information for assessing the crop water needs. On the contrary, the daily difference for maximum trunk diameter (MXTD) between each of the DI trees and the FI tree (DMXTD) clearly indicated the onset and severity of water stress. A similar analysis with the Ep values, from which DEp values were derived, showed the effect of water stress on the water consumption of the trees. We concluded that the simultaneous use of DMXTD and DEp values provides more detailed information to assess water needs in mature olive orchards than the use of Q or TDV records alone. This work was funded by the IFAPA, Consejería de Innovación, Ciencia y Empresa de la Junta de Andalucía, research project ref. C03-056, and by the CICYT/FEDER, research projects AGL2004- 0794-CO3-02/AGR and AGL2007-66279-CO3-02. Peer reviewed 2012-01-18T14:53:25Z 2012-01-18T14:53:25Z 2011-09 artículo http://purl.org/coar/resource_type/c_6501 Environmental and Experimental Botany 72 (2): 330–338 (2011) 0098-8472 http://hdl.handle.net/10261/44445 10.1016/j.envexpbot.2011.04.004 http://dx.doi.org/10.13039/501100007273 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100011011 en http://dx.doi.org/10.1016/j.envexpbot.2011.04.004 none Elsevier |
| institution |
IRNAS ES |
| collection |
DSpace |
| country |
España |
| countrycode |
ES |
| component |
Bibliográfico |
| access |
En linea |
| databasecode |
dig-irnas-es |
| tag |
biblioteca |
| region |
Europa del Sur |
| libraryname |
Biblioteca del IRNAS España |
| language |
English |
| topic |
Deficit irrigation Maximum trunk diameter Sap flux Signal intensity Tree water consumption Deficit irrigation Maximum trunk diameter Sap flux Signal intensity Tree water consumption |
| spellingShingle |
Deficit irrigation Maximum trunk diameter Sap flux Signal intensity Tree water consumption Deficit irrigation Maximum trunk diameter Sap flux Signal intensity Tree water consumption Fernández Luque, José Enrique Moreno Lucas, Félix Martín Palomo, Mª José Cuevas Sánchez, Mª Victoria Torres Ruiz, José Manuel Moriana, Alfonso Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards |
| description |
9 pages, 7 figures. |
| author2 |
Instituto de Investigación y Formación Agraria y Pesquera (España) |
| author_facet |
Instituto de Investigación y Formación Agraria y Pesquera (España) Fernández Luque, José Enrique Moreno Lucas, Félix Martín Palomo, Mª José Cuevas Sánchez, Mª Victoria Torres Ruiz, José Manuel Moriana, Alfonso |
| format |
artículo |
| topic_facet |
Deficit irrigation Maximum trunk diameter Sap flux Signal intensity Tree water consumption |
| author |
Fernández Luque, José Enrique Moreno Lucas, Félix Martín Palomo, Mª José Cuevas Sánchez, Mª Victoria Torres Ruiz, José Manuel Moriana, Alfonso |
| author_sort |
Fernández Luque, José Enrique |
| title |
Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards |
| title_short |
Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards |
| title_full |
Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards |
| title_fullStr |
Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards |
| title_full_unstemmed |
Combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards |
| title_sort |
combining sap flow and trunk diameter measurements to assess water needs in mature olive orchards |
| publisher |
Elsevier |
| publishDate |
2011-09 |
| url |
http://hdl.handle.net/10261/44445 http://dx.doi.org/10.13039/501100007273 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100011011 |
| work_keys_str_mv |
AT fernandezluquejoseenrique combiningsapflowandtrunkdiametermeasurementstoassesswaterneedsinmatureoliveorchards AT morenolucasfelix combiningsapflowandtrunkdiametermeasurementstoassesswaterneedsinmatureoliveorchards AT martinpalomomajose combiningsapflowandtrunkdiametermeasurementstoassesswaterneedsinmatureoliveorchards AT cuevassanchezmavictoria combiningsapflowandtrunkdiametermeasurementstoassesswaterneedsinmatureoliveorchards AT torresruizjosemanuel combiningsapflowandtrunkdiametermeasurementstoassesswaterneedsinmatureoliveorchards AT morianaalfonso combiningsapflowandtrunkdiametermeasurementstoassesswaterneedsinmatureoliveorchards |
| _version_ |
1777664233138290688 |