R
Ronald Vargas
Researcher at Food and Agriculture Organization
Publications - 14
Citations - 878
Ronald Vargas is an academic researcher from Food and Agriculture Organization. The author has contributed to research in topics: Soil carbon & Digital soil mapping. The author has an hindex of 7, co-authored 12 publications receiving 615 citations.
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Book ChapterDOI
Soil Spectroscopy: An Alternative to Wet Chemistry for Soil Monitoring
Marco Nocita,Antoine Stevens,Bas van Wesemael,Matt Aitkenhead,Martin Bachmann,Bernard Barthès,Eyal Ben Dor,David J. Brown,Michael Clairotte,Ádám Csorba,Pierre Dardenne,José Alexandre Melo Demattê,Valérie Genot,César Guerrero,Maria Knadel,Luca Montanarella,Carole Noon,Leonardo Ramirez-Lopez,Jean Robertson,Hiro Sakai,José M. Soriano-Disla,Keith D. Shepherd,Bo Stenberg,Erick K. Towett,Ronald Vargas,Johanna Wetterlind +25 more
TL;DR: In this article, the authors describe the state of the art of soil spectroscopy as well as its potential to facilitate soil monitoring, and highlight that the widespread use of spectroscopes to monitor the status of the soil should be encouraged by the creation of a standard for the collection of laboratory soil spectra, to promote the sharing of spectral libraries, and to scan existing soil archives.
Journal ArticleDOI
World's soils are under threat
Luca Montanarella,Dan Pennock,Neil McKenzie,Mohamed Badraoui,Victor Chude,Isaurinda Baptista,Tekalign Mamo,Martin Yemefack,Mikha Singh Aulakh,Kazuyuki Yagi,Suk Young Hong,Pisoot Vijarnsorn,Gan-Lin Zhang,Dominique Arrouays,Helaina Black,Pavel Krasilnikov,Jaroslava Sobocka,Julio Alegre,Carlos Henríquez,Maria de Lourdes Mendonça-Santos,Miguel Angel Taboada,David Espinosa-Victoria,Abdullah Alshankiti,Sayed Kazem Alavipanah,Elsiddig A.E. Elsheikh,Jon Hempel,Marta Camps Arbestain,F.O. Nachtergaele,Ronald Vargas +28 more
Abstract: . The Intergovernmental Technical Panel on Soils has completed the first State of the World's Soil Resources Report. Globally soil erosion was identified as the gravest threat, leading to deteriorating water quality in developed regions and to lowering of crop yields in many developing regions. We need to increase nitrogen and phosphorus fertilizer use in infertile tropical and semi-tropical soils – the regions where the most food insecurity among us are found – while reducing global use of these products overall. Stores of soil organic carbon are critical in the global carbon balance, and national governments must set specific targets to stabilize or ideally increase soil organic carbon stores. Finally the quality of soil information available for policy formulation must be improved – the regional assessments in the State of the World's Soil Resources Report frequently base their evaluations on studies from the 1990s based on observations made in the 1980s or earlier.
Journal ArticleDOI
Global governance of soil resources as a necessary condition for sustainable development
Luca Montanarella,Ronald Vargas +1 more
TL;DR: A new Global Soil Partnership (GSP) was proposed by the FAO and the EU in this article to ensure the necessary availability of soil resources for both current and future generations.
Journal ArticleDOI
No silver bullet for digital soil mapping: country-specific soil organic carbon estimates across Latin America
Mario Guevara,Guillermo Federico Olmedo,Emma Stell,Yusuf Yigini,Yameli Aguilar Duarte,Carlos Arellano Hernández,Gloria E. Arévalo,Carlos Eduardo Arroyo-Cruz,Adriana Bolivar,Sally Bunning,Nelson Bustamante Cañas,Carlos Omar Cruz-Gaistardo,Fabian Davila,Martin Dell Acqua,Arnulfo Encina,Hernán Figueredo Tacona,Fernando Fontes,José Antonio Hernández Herrera,Alejandro Roberto Ibelles Navarro,Veronica Loayza,Alexandra M. Manueles,Fernando Mendoza Jara,Carolina Olivera,Rodrigo Osorio Hermosilla,Gonzalo Pereira,Pablo Prieto,Iván Alexis Ramos,Juan Carlos Rey Brina,Rafael Rivera,Javier Rodríguez-Rodríguez,Ronald Roopnarine,Albán Rosales Ibarra,Kenset Amaury Rosales Riveiro,Guillermo Andrés Schulz,Adrian Spence,Gustavo M. Vasques,Ronald Vargas,Rodrigo Vargas +37 more
TL;DR: In this paper, the authors identified country-specific predictors for soil organic carbon (SOC) and tested the performance of five predictive algorithms for mapping SOC across Latin America, including support vector machines, random forests, kernel-weighted nearest neighbors (KK), partial least squares regression (PL), and regression kriging based on stepwise multiple linear models (RK).
Book ChapterDOI
Voluntary Guidelines for Sustainable Soil Management: Global Action for Healthy Soils
TL;DR: The Voluntary Guidelines for Sustainable Soil Management (VGSSM) were developed by the Global Soil Partnership (GSP) and adopted by FAO and its member countries as mentioned in this paper.