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Grant support

Financial support has been provided by PRIMA, a program supported under H2020, the European Union's Framework program for research and innovation ("AdaMedOr" project; grant number 01DH20012 of the German Federal Ministry of Education and Research; grant number PCI2020-111966/AEI/10.13039/501100011033 of Agencia Estatal de Investigacion); Agencia Estatal de Investigacion (PID2020-115473RR-I00/AEI/10.13039/501100011033) and Gobierno de Aragon-European Social Fund, European Union [Grupo Consolidado A12-17R].

Analysis of institutional authors

Fadon, EricaCorresponding AuthorRodrigo, JavierAuthor

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June 15, 2024
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Apparent differences in agroclimatic requirements for sweet cherry across climatic settings reveal shortcomings in common phenology models

Publicated to:Agricultural And Forest Meteorology. 333 109387- - 2023-03-06 333(), DOI: 10.1016/j.agrformet.2023.109387

Authors: Fadon, Erica; Do, Hoa; Blanke, Michael; Rodrigo, Javier; Luedeling, Eike

Affiliations

Ctr Invest & Tecnol Agroalimentaria Aragon CITA, Dept Ciencia Vegetal, Avda Montanana 930, Zaragoza 50059, Spain - Author
Univ Bonn, INRES Hort Sci, D-53121 Bonn, Germany - Author
Univ Zaragoza, Inst Agroalimentario Aragon IA2, CITA, Zaragoza, Spain - Author
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Abstract

Temperate fruit trees are widely cultivated across the world's temperate regions. These trees are well-adapted to cold-winter climates through their ability to synchronize their phenology with the seasons. In autumn, they enter a dormant state, which allows them to survive the low winter temperatures and lasts until they resume growth in early spring. We analyzed the agroclimatic requirements (chill accumulation in Chill Portions, CP, and heat accumulation in Growing Degree Hours, GDH) for blooming in three sweet cherry cultivars ('Samba', 'Burlat', and 'Sylvia') grown in distinct climatic settings in Bonn (Germany) and Zaragoza (Spain). We used Partial Least Squares (PLS) regression analysis to relate bloom dates of the three cultivars grown in both locations to local temperatures. In Bonn, the colder location, trees experienced a long period of chill exposure (87-105 CP), which allowed a rapid growth response to warm temperatures (3233-4343 GDH). The flowering dates were mainly driven by conditions during the forcing period. In contrast, in the warmer climate of Zaragoza, chill exposure of the trees was relatively short (48-59 CP). The buds required long exposure to warm conditions (5444-6988 GDH) to subsequently bloom. In this case, flowering dates were influenced more by exposure to chilling than by conditions during the heat accumulation period. Global warming caused opposite effects on flowering dates depending on location. While in Bonn flowering dates have advanced between 3 and 5 days per decade, bloom dates in Zaragoza did not show such a trend, except for minor flowering delays in 'Sylvia', the late-flowering cultivar. Our results show that the response of the flowering dates to temperature appeared to depend on spe-cific local climatic conditions. Although we applied current methodologies to determine the agroclimatic re-quirements of these cultivars, our methods were unable to derive consistent estimates of agroclimatic needs across the two locations.

Keywords

AdaptationApricotChilling requirementsCultivarsDatDormancy releaseDynamic modelForcing requirementsGrowing degree hours modelHeat requirementsIdentificationPerformancePls analysiTraitsTrees

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Agricultural And Forest Meteorology 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, 2023, it was in position 3/89, thus managing to position itself as a Q1 (Primer Cuartil), in the category Forestry. Notably, the journal is positioned above the 90th percentile.

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: 2.16. 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 14, 2024)

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: 1.73 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 5.61 (source consulted: Dimensions Nov 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-11-07, the following number of citations:

  • WoS: 9
  • Scopus: 9
  • Google Scholar: 3

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 2025-11-07:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 20.
  • 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: 20 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 2.
  • The number of mentions on the social network X (formerly Twitter): 4 (Altmetric).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Germany.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Fadón Adrián, Erica) .

the author responsible for correspondence tasks has been Fadón Adrián, Erica.

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