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Analysis of institutional authors

Guardia GCorresponding AuthorGarcia-Gutierrez SAuthorRodríguez-Pérez RAuthorRecio JAuthorVallejo AAuthor

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July 27, 2021
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Increasing N use efficiency while decreasing gaseous N losses in a non-tilled wheat (Triticum aestivum L.) crop using a double inhibitor

Publicated to: AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 319 107546- - 2021-10-01 319(), DOI: 10.1016/j.agee.2021.107546

Authors:

Guardia, G; García-Gutiérrez, S; Rodríguez-Pérez, R; Recio, J; Vallejo, A
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Affiliations

Centro de Estudios e Investigacion para la Gestion de Riesgos Agrarios y Medioambientales, Universidad Politecnica de Madrid - Author
Ctr Estudios & Invest Gest Riesgos Agr & Medioamb, Ciudad Univ S-N, Madrid 28040, Spain - Author
Escuela Tecnica Superior de Ingenieros Agronomos de Madrid - Author
Univ Politecn Madrid, ETSI Agron Alimentaria & Biosistemas, Dept Quim & Tecnol Alimentos, Ciudad Univ S-N, Madrid 28040, Spain - Author
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Abstract

No tillage management is being encouraged nowadays to prevent soil erosion and contribute to carbon (C) sequestration. However, N fertilizer should be managed properly to optimize N use efficiency and to avoid the side-effects of losses of gaseous nitrogen (N), particularly those of ammonia (NH3), which are expected to increase due to the presence of residues in the topsoil. In this context, a non-tilled (two years after conversion from tillage) field experiment was set up in central Spain, in which urea treated with a combination of urease (N-butyl thiophosphorictriamide, NBPT) and nitrification (2-(3,4-dimethyl-1H-pyrazol-1-yl) succinic acid isomeric mixture, DMPSA) inhibitors was compared with the use of urea without inhibitors. Fluxes of NH3 (using the integrated horizontal flux method with three replicates), nitrous oxide (N2O), methane (CH4) and soil respiration were measured throughout the wheat (Triticum aestivum L.) cropping cycle under rainfed conditions, together with ancillary soil measurements (e.g., soil moisture and mineral N), yield and crop uptake of N. Gaseous N losses from urea without inhibitors accounted for 10.35% and 0.66% (for NH3 and N2O, respectively) of total N applied. The use of the double inhibitor resulted in a significant mitigation of both losses (by 50.5% and 91.6% for NH3 and N2O, respectively). The double inhibitor increased N use efficiency expressed as crop recovery efficiency and partial nutrient balance, and decreased N surplus, in comparison with urea without inhibitors. In spite of a similar grain yield, the unfertilized control had the lowest aboveground N uptake rate, due to the higher concentrations of grain and straw N for the fertilized treatments. Under the conditions of our study, NH3 volatilization in a short-term no-till managed field can be minimized using a double (urease plus nitrification) inhibitor. This strategy had no negative side effects on N surplus, CH4 uptake or N2O mitigation and led to a significant improvement of N use efficiency.
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Keywords

ammonia volatilizationcarbon footprintclimateenhanced-efficiency fertilizerglobal warming potentialmethanotrophic activityn-(n-butyl) thiophosphoric triamiden2o emissionsnitrification inhibitorsrespirationsoiltillage systemsurease inhibitorvolatilization lossesCarbon footprintEnhanced-efficiency fertilizerGlobal warming potentialMethanotrophic activityNitrous-oxide emissionsSoil nitrateVolatilization losses

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal AGRICULTURE ECOSYSTEMS & ENVIRONMENT 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, 2021, it was in position 5/59, thus managing to position itself as a Q1 (Primer Cuartil), in the category Agriculture, Multidisciplinary. 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: 2.84. 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: 2.64 (source consulted: FECYT Mar 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-25, the following number of citations:

  • WoS: 32
  • Scopus: 33
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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 2026-04-25:

  • 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: 46.
  • 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: 36 (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: 3.

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: https://oa.upm.es/93096/

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: 36
  • Downloads: 16
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Leadership analysis of institutional authors

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 (GUARDIA VAZQUEZ, GUILLERMO) and Last Author (VALLEJO GARCIA, ANTONIO).

the author responsible for correspondence tasks has been GUARDIA VAZQUEZ, GUILLERMO.

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