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August 17, 2020
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Stem water potential-based regulated deficit irrigation scheduling for olive table trees

Publicated to: AGRICULTURAL WATER MANAGEMENT. 242 (106418): 106418- - 2020-12-01 242(106418), DOI: 10.1016/j.agwat.2020.106418

Authors:

Corell, M; Martin-Palomo, M J; Giron, I; Andreu, L; Galindo, A; Centeno, A; Perez-Lopez, D; Moriana, A
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Affiliations

CSIC - Instituto de Recursos Naturales y Agrobiologia de Sevilla (IRNAS) - Author
CSIC, IRNAS, Avda Reina Mercedes 10, Seville 41012, Spain - Author
Univ Politecn Madrid, Dept Prod Agr, CEIGRAM, Av Puerta Hierro 2, Madrid 28040, Spain - Author
Univ Seville, Dept Ciencias Agroforestales, ETSIA, Crta Utrera Km 1, Seville 41013, Spain - Author
Univ Seville, Unidad Asociada, CSIC, Uso Sostenible Suelo & Agua Agr,IRNAS, Crta Utrera Km 1, Seville 41013, Spain - Author
Universidad Politécnica de Madrid - Author
University of Seville - Author
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Abstract

© 2020 Elsevier B.V. Regulated deficit irrigation (RDI) involves water stress management in different phenological periods throughout the season. Research in olive trees (oil production) suggested RDI during pit hardening based in pre-dawn and midday stem water potential (SWP) thresholds. However, the previous thresholds may not be extrapolated to table olive because fruit size, a very important feature in the table olive yield quality, is very sensitive to water stress. RDI in table olive deserve further research to determine the optimal water potential thresholds and the duration of the RDI periods for the specificity of the crop (low crop load to promote high fruit size). The aim of this work was to study different RDI schedules during pit hardening, considering different levels and durations of water stress. The experiment was performed in the 2015, 2016 and 2017 seasons, in a commercial mature table olive orchard (cv. Manzanilla) in Dos Hermanas (Seville, Spain). Control treatments were based on midday SWP measurement in order to optimize the water status with values around −1.4 MPa. Two RDI treatments were applied during pit hardening, dated (according to the changes in longitudinal fruit growth) from mid-June to the last week of August) to maintain water potential values around −2 MPa (RDI-1) and −3.5 MPa (RDI-3). Another RDI treatment (RDI-2) received irrigation to maintain values around −3.5 MPa but the recovery was performed at early July in order to obtain different durations of water stress. Irrigation strategies were evaluated with water relations measurements (soil moisture, gas exchange), fruit and shoot growth and quality and quantity yield indicators. Yield was not significantly affected in any of the RDI treatments with an ANOVA analysis. However, fruit drop estimated as the percentage of fruit lost only in the period of water deficit was related with water stress parameters (SWP and stress integral, IS). In addition, the relationship between fruits size and these latter parameters were significant and change according to yield level. Irrigation treatments did not affect next season yield because shoot growth and number of inflorescence at the beginning of each season were not different. RDI effect changed according to yield level, mainly in relation with fruit size. Data suggest that yield levels up to 12 t ha−1 were possible to manage RDI without affecting fruit size or reducing commercial quality.
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Keywords

Cellular processesFruit dropFruit loadFruit sizeGrowthOlea-europaea l.OrchardRdiResponsesStrategiesToolWater relationsWater stress level

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal AGRICULTURAL WATER MANAGEMENT due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2020, it was in position 12/91, thus managing to position itself as a Q1 (Primer Cuartil), in the category Agronomy.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.59. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 1.65 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-27, the following number of citations:

  • WoS: 22
  • Scopus: 26
  • Google Scholar: 26
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-27:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 44 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/86759/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 149
  • Downloads: 88
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