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Analysis of institutional authors

Alsina, Maria MarCorresponding Author

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October 6, 2025
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Vineyard Design, Vine Age, and Floor Management Practices Affect Sentinel-2 NDVI Time Series Analysis of California Vineyards

Publicated to: American Journal of Enology and Viticulture. 76 (2): 0760023- - 2025-09-01 76(2), DOI: 10.5344/ajev.2025.25010

Authors:

Oger, B; Aboutalebi, M; Dokoozlian, N; Sanchez, L; Alsina, MM
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Affiliations

Fructicultura. Producció Vegetal - Author
Gallo Winery, Winegrowing Res, Modesto, CA 95354 USA - Author
IRTA Mas Badia, La Tallada Demporda, Girona, Spain - Author
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Abstract

Background and goals Monitoring vineyards with remote sensing tools is challenging due to the site specificity and difficulty of accurately scaling the technology across large regions. To overcome these challenges, this study aimed to understand how a time series of remote sensing vegetation indices is influenced by vineyard design, vine age, and vineyard floor management practices. Methods and key findings We examined Sentinel-2 time series data over a 5-yr period from over 1000 vineyard blocks covering more than 10,000 ha across California. Our analysis revealed a strong annual effect and a significant impact of vine trellis-training systems. Vine age was particularly relevant for blocks younger than 3 yr and older than 25 yr, while factors such as variety and row distance (ranging from similar to 2 to 4 m) were less significant. We also found that remote sensing vegetation indices calculated from the top of the canopy were less relevant for vines grown on the vertical shoot-positioned trellis compared to vines grown on other trellis systems. Conclusions and significance These findings help define key vineyard characteristics that influence the normalized difference vegetation index and potentially other commonly used vegetation indices. They provide new insights into the factors that must be considered when using remote sensing data across heterogeneous sets of vineyard blocks, as well as the characteristic seasonal pattern for each factor. This work paves the way for largescale vineyard monitoring using satellite-based vegetation indices.
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Keywords

GrapeImageryRemote sensingTrellisUavVegetation indicesVineyard

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal American Journal of Enology and Viticulture 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, 2025, it was in position 19/45, thus managing to position itself as a Q2 (Segundo Cuartil), in the category Horticulture. Notably, the journal is positioned en el Cuartil Q2 para la agencia Scopus (SJR) en la categoría Horticulture.

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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 2026-04-05:

  • 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: 7 (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:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: http://hdl.handle.net/20.500.12327/4949
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: United States of America.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (ALSINA MARTI, MARIA DEL MAR).

the author responsible for correspondence tasks has been ALSINA MARTI, MARIA DEL MAR.

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Awards linked to the item

The authors thank GALLO vineyard managers for providing vineyard characteristic data, and GALLO research assistants and interns for collecting or validating data from hundreds of vineyard blocks across California. This work would not have been possible without their contribution. The authors declare that they have no conflicts of interest.
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