The effect of water status on productive and flowering variables in young ‘Arbequina’ olive trees under limited irrigation water availability in a semiarid region of Chile

Beyá-Marshall, V.; Herrera, Julio; Fichet, Thomas; Trentacoste, Eduardo R.; Kremer, Cristián

doi:10.1007/s13580-018-0088-x

Cited by 11 publications

(7 citation statements)

References 38 publications

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“…Maintaining SWP near the baseline would be the best strategy during these phenological stages because fruit and oil yield is strongly affected by early water stress (Rapoport et al, 2012). However, some evidence suggests that only SWP below −2 MPa in the spring will decrease flower number and its quality (Beyá-Marshall et al, 2018). Allowing trees to reach this level of stress before irrigation could provide significant water savings and allow for a greater number of management options at the farm scale under drought conditions.…”

Section: Phase IIImentioning

confidence: 99%

Establishing a Reference Baseline for Midday Stem Water Potential in Olive and Its Use for Plant-Based Irrigation Management

et al. 2021

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Midday stem water potential (SWP) is rapidly becoming adopted as a standard tool for plant-based irrigation management in many woody perennial crops. A reference or “baseline” SWP has been used in some crops (almond, prune, grape, and walnut) to account for the climatic influence of air vapor pressure deficit (VPD) on SWP under non-limiting soil moisture conditions. The baseline can be determined empirically for field trees maintained under such non-limiting conditions, but such conditions are difficult to achieve for an entire season. We present the results of an alternative survey-based approach, using a large set of SWP and VPD data collected over multiple years, from irrigation experiments in olive orchards located in multiple countries [Spain, United States (California), Italy, and Argentina]. The relation of SWP to midday VPD across the entire data set was consistent with an upper limit SWP which declined with VPD, with the upper limit being similar to that found in Prunus. A best fit linear regression estimate for this upper limit (baseline) was found by selecting the maximum R2 and minimum probability for various upper fractions of the SWP/VPD relation. In addition to being surprisingly similar to the Prunus baseline, the olive baseline was also similar (within 0.1 MPa) to a recently published mechanistic olive soil-plant-atmosphere-continuum (SPAC) model for “super high density” orchard systems. Despite similarities in the baseline, the overall physiological range of SWP exhibited by olive extends to about −8 MPa, compared to about −4 MPa for economically producing almond. This may indicate that, despite species differences in physiological responses to low water availability (drought), there may be convergent adaptations/acclimations across species to high levels of water availability. Similar to its use in other crops, the olive baseline will enable more accurate and reproducible plant-based irrigation management for both full and deficit irrigation practices, and we present tentative SWP guidelines for this purpose.

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Section: Phase IIImentioning

confidence: 99%

Establishing a Reference Baseline for Midday Stem Water Potential in Olive and Its Use for Plant-Based Irrigation Management

et al. 2021

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“…Would drier winters affect olive i levels? Various studies have shown that mild drought during winter had no positive or negative effect on flowering [65,66] as long as the drought was not severe in duration or water potential value [65,67,68]. It is difficult to know whether trees growing under rainfed conditions cross this water potential threshold during the inductive period, and, as such, drought could not be completely ruled out as not having an effect on spring olive flowering.…”

Section: Discussionmentioning

confidence: 99%

“…The water status of trees was measured using the pressure bomb method, previously used in olives [68,79]. For this experiment, stem water potential (the water potential of the trunk of the olive tree as opposed to a smaller branch) was quantified using the Rimad 3000 pressure bomb on nitrogen gas.…”

Section: Quantifying Stem Water Potentialmentioning

confidence: 99%

Studying Parameters Affecting Accumulation of Chilling Units Required for Olive Winter Flower Induction

Engelen

Wechsler

Bakhshian

et al. 2023

Plants

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With global warming, mean winter temperatures are predicted to increase. Therefore, understanding how warmer winters will affect the levels of olive flower induction is essential for predicting the future sustainability of olive oil production under different climactic scenarios. Here, we studied the effect of fruit load, forced drought in winter, and different winter temperature regimes on olive flower induction using several cultivars. We show the necessity of studying trees with no previous fruit load as well as provide evidence that soil water content during winter does not significantly affect the expression of an FT-encoding gene in leaves and the subsequent rate of flower induction. We collected yearly flowering data for 5 cultivars for 9 to 11 winters, altogether 48 data sets. Analyzing hourly temperatures from these winters, we made initial attempts to provide an efficient method to calculate accumulated chill units that are then correlated with the level of flower induction in olives. While the new models tested here appear to predict the positive contribution of cold temperatures, they lack in accurately predicting the reduction in cold units caused by warm temperatures occurring during winter.

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“…Also, the authors demonstrated that the highest growth and yield of the plant were obtained in the application of black polyethylene mulch in 100% CWR compared to no mulch application. Water availability affects flower formation and fruit growth, therefore a decrease in water supply resulted in decreasing the number of flowers and yield (Beyá-Marshall et al, 2018). Drought stress reduced the number of flowers in chrysanthemums and tea plants (Qu et al, 2019 andSahithi et al, 2020).…”

Section: Measured Charactersmentioning

confidence: 99%

Alleviating of Water Deficit in Eggplant by Two Different Mulches

Rodan

Hassandokht

Sadeghzadeh-Ahari³

et al. 2021

Egyptian Journal of Horticulture

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E GGPLANT (Solanum melongena L.) is one of the drought-tolerant vegetable crops, however, recently climate change has had a devastating impact on crop cultivation in many parts of Iran. The present research aimed to investigate the application of date straw mulches (DSM) and plastic mulches (PM) on yield and morphological and physiological characters of the plant under different crop water requirements. A split-split plot experiment using an RCB design with three replications in Rodan, Hormozgan, Iran at 2017. The three levels of crop water requirement (CWR), i.e. 40, 70, and 100%, the two levels of DSM (i.e. control and DSM), and the three levels of PM (i.e. 0, 100, and 120 cm in soil depths), were allocated in the main, sub and sub-sub plots, respectively. The results of the analysis of variance revealed that the triple-interaction effects of the DSM, PM, and CWR were statically significant for all traits (P < 0.05 or P < 0.01). However, none of the simple and interactions effects were not statically significant for leaf length and width. The results revealed that 40% of CWR reduced the yield by 49% compared with 100% CWR. Also, the application of the DSM and PM alleviated the deleterious effects of water deficit. Finally, the application of the mulches is recommended for eggplant in areas affected by water shortages.

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The effect of water status on productive and flowering variables in young ‘Arbequina’ olive trees under limited irrigation water availability in a semiarid region of Chile

Cited by 11 publications

References 38 publications

Establishing a Reference Baseline for Midday Stem Water Potential in Olive and Its Use for Plant-Based Irrigation Management

Establishing a Reference Baseline for Midday Stem Water Potential in Olive and Its Use for Plant-Based Irrigation Management

Studying Parameters Affecting Accumulation of Chilling Units Required for Olive Winter Flower Induction

Alleviating of Water Deficit in Eggplant by Two Different Mulches

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