Plant Water Status as an Index of Irrigation Need in Deciduous Fruit Trees

Shackel, Kenneth A.; Ahmadi, Hadi; Biasi, William V.; Buchner, Richard; Goldhamer, D.; Gurusinghe, Sunitha; Hasey, Janine; Kester, Dale E.; Krueger, Bill; Lampinen, Bruce; McGourty, Glenn; Micke, W. C.; Mitcham, Elizabeth; Olson, Bret E.; Pelletrau, K.; Philips, Hannah; Ramos, Dalila de Brito Marques; Schwankl, Larry W.; Sibbett, S.; Snyder, Robert L.; Southwick, Stephen M.; Stevenson, M.A.; Thorpe, M. R.; Weinbaum, Steven A.; Yeager, James T.

doi:10.21273/horttech.7.1.23

Cited by 291 publications

(154 citation statements)

References 0 publications

Supporting

Mentioning

117

Contrasting

Unclassified

Order By: Relevance

“…A high correlation between W MD and W STEM was found in Mediterranean fruit woody plants, such as grapevine (Stevens et al, 1995;Williams and Araujo, 2002), though this may not hold true for other fruit trees of temperate environments, such as apple (Naor et al, 1995). Measurements of W PD on olive provided a good estimate of the soil moisture status within the orchard, being responsive to water applications in early stages of the experiment; however, also W STEM was reflective of the amount of water in the soil profile under the environmental and soil conditions of this study, being a sensitive indicator of water stress earlier than W MD (see Shackel et al, 1997). Experimental evidences suggest that W PD may come into equilibrium with the wettest portion of the soil in the plant's root zone (see Ameglio et al, 1999).…”

Section: Discussionmentioning

confidence: 79%

The effect of deficit irrigation on seasonal variations of plant water use in Olea europaea L.

et al. 2005

View full text Add to dashboard Cite

A field experiment on olive trees (Olea europaea L.) was designed with the objective to search for an optimum irrigation scheduling by analyzing the possible effects of deficit irrigation. Treatments were: a non-irrigated control (rainfed) and three treatments that received seasonal water amount equivalent to 33 and 66% of crop evapotranspiration (ET C ) in the period August-September (respectively 33II and 66II), and 66% of ET C from late May to early October (66I-II). Atmospheric evaporative demand and soil moisture conditions were regularly monitored. Irrigation effects on plant water relations were characterized throughout a growing season. Whole-plant water use, in deficit irrigated (66I-II) and rainfed olive trees, was determined using a xylem sap flow method (compensation heat-pulse technique). The magnitude of variations in water use and the seasonal dynamic of water relations varied among treatments, suggesting that olive trees were strongly responsive to both irrigation amount and time. Physiological parameters responded to variations in tree water status, soil moisture conditions and atmospheric evaporative demand. All measurements of tree water status were highly correlated with one another. There was a considerable degree of agreement between daily transpiration deduced from heat-pulse velocity and that determined by calibration using the water balance technique. Deficit irrigation during the whole summer (66I-II) resulted in improved plant water relations with respect to other watering regimes; while, severe regulated deficit irrigation differentiated only slightly 33II treatment from rainfed plants. Nevertheless, regulated deficit irrigation of olive trees after pit hardening (66II) could be recommended, at least in soil, cultivar and environmental conditions of this study.

show abstract

Section: Discussionmentioning

confidence: 79%

The effect of deficit irrigation on seasonal variations of plant water use in Olea europaea L.

et al. 2005

View full text Add to dashboard Cite

show abstract

“…Moreover, knowledge of the behaviour of these PBWSI is essential when their continuous and automatic registers are used for automatic irrigation scheduling (Moreno et al 1996, Shackel et al 1997, Goldhamer and Fereres 2004.…”

Section: Introductionmentioning

confidence: 99%

Water status indicators of lemon trees in response to flooding and recovery

Ortuño¹,

Alarcón²,

Nicolás³

et al. 2007

Biologia plant.

View full text Add to dashboard Cite

Potted 2-year-old lemon trees [Citrus limon (L.) Burm. fil, cv. Verna] grafted on sour orange (C. aurantium L.) rootstock were subjected to flooding for 3 d. Control plants were irrigated daily to field capacity. Continuously (sap flow, trunk diameter fluctuations) and discretely (predawn and midday leaf water potential, leaf conductance) measured plant-based water status indicators were compared. The sensitivity of the maximum daily trunk shrinkage signal intensity to flooding and its behaviour during the recovery period demonstrated that this indicator is more feasible than the others for use in automatic irrigation. The responses to flooding of continuously and discretely measured plantbased water status indicators were very similar to those observed in response to drought stress indicating that it necessary to use soil water measurement automatic sensors to detect the cause of the stress. The results underlined the robustness of the compensation heat-pulse technique for estimating instantaneous and daily transpiration rates on flooding stress and recovery.Additional key words: Citrus limon, leaf conductance, leaf water potential, plant water relations, sap flow, trunk diameter fluctuations.

show abstract

“…The most widely used approach for evaluating tree water status has been to determine leaf water potential (Ame´glio et al, 1999;Hsiao, 1990). However, Chone´et al (2001), Naor (2000) and Shackel et al (1997) showed that midday stem water potential (Y stem ) is a significant and more reliable plant water status indicator for scheduling the irrigation of woody crops. However, the main disadvantage of Y stem is the relatively cumbersome measurement procedure, the necessity of frequent trips to the field and a significant input of labour.…”

Section: Introductionmentioning

confidence: 99%

“…To correctly interpret the values of each plant-based water status indicator and their use for irrigation scheduling, it is necessary to develop baselines or reference relationships, which are obtained with their values in plants under nonlimiting soil water conditions versus the evaporative demand of the atmosphere Martin et al, 1990;Shackel et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Relationships Between Climatic Variables and Sap Flow, Stem Water Potential and Maximum Daily Trunk Shrinkage in Lemon Trees

et al. 2006

View full text Add to dashboard Cite

The feasibility of obtaining sap flow (SF), maximum daily trunk shrinkage (MDS) and midday stem water potential (Y stem ) baselines or reference values for use in irrigation scheduling was studied in adult Fino lemon trees (Citrus limon (L.) Burm. fil.) grafted on sour orange (C. aurantium L.) rootstocks. Plants were irrigated daily above their water requirements in order to obtain non-limiting soil water conditions. The results indicated that baselines for plant-based water status indicators (MDS, SF and Y stem ) can be obtained, even though there was a certain scattering of the data points representing the relations between the plant-based measurements and the environmental variables (reference evapotranspiration, solar radiation, vapour pressure deficit and temperature). SF was more closely associated with changes in the studied evaporative demand variables than were MDS and Y stem . SF and Y stem were more closely correlated with changes in reference evapotranspiration (ETo) (r 2 = 0.93 and 0.79, respectively), while MDS behaviour was best correlated with mean daily air temperature (T m ) (r 2 = 0.76). Increases in the evaporative demand induced more negative Y stem values and, as a consequence, SF increased, which, in turn, was translated into an increase in MDS. This confirmed that SF and MDS were very good predictors of the plant water status during the observation period and their continuous recording offers the promising possibility of their use in automatic irrigation scheduling in lemon trees.Abbreviations: Y stem -midday stem water potential; ETc -crop evapotranspiration; ETo -reference evapotranspiration; MDS -maximum daily trunk shrinkage; R s -solar radiation; SF -sap flow; TDFtrunk diameter fluctuations; T m -mean daily air temperature; T md -midday air temperature; VPD m -daily mean vapour pressure deficit; VPD md -midday vapour pressure deficit

show abstract

Plant Water Status as an Index of Irrigation Need in Deciduous Fruit Trees

Cited by 291 publications

References 0 publications

The effect of deficit irrigation on seasonal variations of plant water use in Olea europaea L.

The effect of deficit irrigation on seasonal variations of plant water use in Olea europaea L.

Water status indicators of lemon trees in response to flooding and recovery

Relationships Between Climatic Variables and Sap Flow, Stem Water Potential and Maximum Daily Trunk Shrinkage in Lemon Trees

Contact Info

Product

Resources

About