|Author:||Cifre, J. ; Bota, J. ; Escalona, J. M. ; Medrano, H. ; Flexas, J.|
|Book Group Author:||NA|
Grapevine is a traditionally non-irrigated crop that occupies quite an extensive agricultural area in dry lands and semi-arid regions. Recently, irrigation was introduced to increase the low land yield, but a good compromise between grape quality and yield is of major importance for the achievement of high-quality products as wine. Therefore, water-use-efficient irrigation and regulated deficit irrigation programs need to be developed to improve water-use efficiency, crop productivity and quality in semi-arid crops. In the present review, current knowledge on grapevine responses to water stress is summarised. Based on this knowledge, the usefulness of different physiological parameters is discussed, and current knowledge on their applicability for water stress detection and irrigation management in grapevines is reviewed. Partial root drying (PRD) and regulated deficit irrigation (RDI) programs are proposed as the most promising tools for such purpose. Among RDI programs, several parameters are proposed as putative indicators of irrigation convenience and dosage. These are sap flow (measured by sap flow meters), trunk growth variations (measured by linear transducers of displacement, LTDs), canopy temperature (assessed by infrared thermometry), reflectance indices (measured by spectroradiometers or specifically designed instruments) and chlorophyll fluorescence (measured by either active or passive fluorometers). Advantages and disadvantages of all these tools are discussed.
|Pages:||159 - 170|
|Journal:||Agriculture, Ecosystems & Environment|
arid lands, canopy, chlorophyll, crop yield, dry farming,fluorescence, grapes, instrumentation, irrigation, irrigationscheduling, plant water relations, reflectance, reviews, sap flow,semiarid zones, soil fertility, stress, stress response, temperature,water stress, water use efficiency, Vitis, Vitis vinifera, Vitidaceae,Rhamnales, dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes,Vitis, crop qualit, crown cover, dryland farming, irrigation management,leaf canopy, sap ascent, Vitaceae, watering, Horticultural Crops (FF003)(New March 2000), Plant Physiology and Biochemistry (FF060), Plant WaterRelations (FF062), Soil Water Management (Irrigation and Drainage)(JJ800) (Revised June 2002) [formerly Soil Water Management], PlantProduction (FF100), Crop Produce (QQ050), Food Composition and Quality(QQ500), Soil Fertility (JJ600), Techniques and Methodology (ZZ900)