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Gonzalez, LCorresponding AuthorTorres, EAuthorAvila, GAuthorCarbo, JAuthorBonany, JAuthorAlegre, SAuthorAsin, LAuthor

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March 24, 2023
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Effect of thinning with metamitron, NAA, BA and naphthenic acids on apple (Malus domestica) trees

Publicated to: Plant Growth Regulation. 102 (1): 39-50 - 2024-02-06 102(1), DOI: 10.1007/s10725-023-00976-4

Authors:

Gonzalez, L; Torres, E; Avila, G; Carbó, J; Bonany, J; Alegre, S; Asin, L
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Affiliations

2021 SGR 01428 Fructicultura-FRUIT group. IRTA Investigación y Tecnología Agroalimentarias - Author
Altres Activitats IRTA. IRTA Investigación y Tecnología Agroalimentarias - Author
Cornell Univ, Sch Integrat Plant Sci, Cornell AgriTech, Hort Sect, Geneva, NY 14456 USA - Author
Fructicultura. IRTA Investigación y Tecnología Agroalimentarias - Author
Fructicultura. Producció Vegetal - Author
IRTA Mas Badia Field Stn, Girona 17134, Spain - Author
PCiTAL, IRTA Fruitcentre, Pk Gardeny,Fruitctr Bldg, Lleida 25003, Spain - Author
Producció Vegetal. IRTA Investigación y Tecnología Agroalimentarias - Author
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Abstract

The successful use of chemical thinners on apples requires programs employing multiple chemistries over the thinning period. A thinning program can be designed using various active ingredients in single or multiple applications. The objective of this work was to compare that standard thinning program (COM-STD), with naphthalene acetamide (NAD), 6-benzyladenine (BA) and naphthyl acetic acid (NAA), to new programs involving Metamitron (ME). Five experiments were conducted over seven seasons, from 2013 to 2019 on Gala and Golden apples. Under the trial conditions, COM-STD (NAD/(BA + NAA)) and ME induced fruit abscission. However, the single applications of ME and COM-STD, made on the same days, showed the same level of thinning efficacy. NAD in petal fall with Tank mix (ME + NAA + BA) application at 11mm increased the thinning efficacy in comparison with applying ME and COM-STD alone. Dose effects were also observed with both ME applied alone and the Tank mix (ME + BA). In general, all combinations involving ME and COM-STD, and especially applying COM-STD after ME, produced greater thinning results than applying either product individually to 'Gala' and 'Golden' apples. Crop yields fell as the thinning efficacy increased, in all the experiments. There was also a negative quadratic relationship between thinning efficacy and average fruit weight, color and diameter.
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Keywords

Apple thinningBenzyladenineCarbarylCrop loadFruit abscissionFruitlet abscissionGalaMetamitronModelNaphthyl acetic acidSet

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Plant Growth Regulation 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, 2024 there are still no calculated indicators, but in 2023, it was in position 50/273, thus managing to position itself as a Q1 (Primer Cuartil), in the category Plant Sciences.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-01-22:

  • Google Scholar: 7
  • WoS: 9
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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 2026-01-22:

  • 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: 5 (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/20.500.12327/2362
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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: First Author (GONZALEZ NIETO, LUIS) and Last Author (ASIN JONES, LUIS).

the author responsible for correspondence tasks has been GONZALEZ NIETO, LUIS.

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Observations

MICINN/Programa Nacional de Proyectos de Investigación Fundamental/RTA2012-00116-00-00/ES/Metamitrona, una nueva herramienta para optimizar el aclareo químico en frutales/
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Awards linked to the item

This study was supported financially by project INIA (RTA2012-00116-00-00) in collaboration with Valent BioSciences LLC. and Sumitomo Chemical Co., Ltd.
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