Fecha/hora: 09/06/2024 19:35:52

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 20/07/2023
Fecha de la última actualización: | 20/07/2023
Autoria: | GONZÁLEZ, A.; HERNÁNDEZ, J.; DEL PINO, A.; HIRIGOYEN, A.; UBALDE, J.
Afiliación: | ALEJANDRO GONZÁLEZ, Soil and Water Department, College of Agronomy, University of the Republic, Garzón Avenue 780, Montevideo 12900, Uruguay; JORGE HERNÁNDEZ, Soil and Water Department, College of Agronomy, University of the Republic, Garzón Avenue 780, Montevideo 12900, Uruguay; AMABELIA DEL PINO, Soil and Water Department, College of Agronomy, University of the Republic, Garzón Avenue 780, Montevideo 12900, Uruguay; ANDRES EDUARDO HIRIGOYEN DOMINGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ UBALDE, Soil and Water Department, College of Agronomy, University of the Republic, Garzón Avenue 780, Montevideo 12900, Uruguay.
Título: | Harvest residue decomposition from Eucalyptus sp. plantations in temperate climate: indicators and contribution to nutrient cycling.
Año de publicación: | 2023
Fuente/Imprenta: | Forests. 2023, Volume 14, Issue 6, Article 1119. https://doi.org/10.3390/f14061119  --- OPEN ACCESS.
ISSN: | 1999-4907
DOI: | 10.3390/f14061119
Idioma: | Inglés
Notas: | Article history: Received 28 April 2023; Revised 17 May 2023; Accepted 26 May 2023; Published 28 May 2023. -- Academic Editors: SongzeWan, Jianping Wu and Shaofei Jin. -- Correspondence author: alejandrogonzalezuruguay@gmail.com . -- This article belongs to the Special Issue Soil Nutrient Cycling and Microbial Dynamics in Forests (https://www.mdpi.com/journal/forests/special_issues/4GVMPM2MQ5). -- LICENSE: Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( (https://creativecommons.org/licenses/by/4.0/). --
Contenido: | The sustainable management of forest plantations by keeping the harvest residues on site improves the soil?s chemical, physical and biological properties while constituting an important nutrient reserve. Our objectives were: (a) to identify and quantify the characteristics of Eucalyptus dunnii, Eucalyptus grandis and Eucalyptus globulus that affect the decomposition rates of harvest residues, as well as indicators that can explain the process and (b) to quantify the potential recycling of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) to the soil from residue decomposition and the quantitative and qualitative differences between the species. We analyzed the information of five commercial plantations of Uruguay. At the harvest, the biomass of leaves, thin and thick branches, bark and their respective N, P, K, Ca and Mg contents were quantified. At each site, bags with samples of the different residues were left to decompose and were periodically collected throughout 24 months. Eucalyptus dunnii presented the largest amounts of residues of all parts. The decomposition rates of the different residues depended on their chemical constitution, part size and the species. Eucalyptus dunnii leaves showed the shortest half-life (0.94 years), while the bark of the same species presented the longest (5.62 years). Total nitrogen and carbon (total and soluble) contents, which can be easily determined, emerged as good predictors for half-life estimation. The release patterns of nutrients depended more on their dynamics in the plant and their parts than on the species itself. The results highlight the importance of nutrient recycling to ensure the sustainability of the productive system in the medium and long term. © 2023 by the authors. Licensee MDPI, Basel, Switzerland.
Palabras-Clave: | Harvest residues half-life; Nutrient recycling; SISTEMA FORESTAL - INIA; Sustainability of the forest system; Uruguay.
Categoría del tema: | K01 Ciencias forestales - Aspectos generales
URL: | https://www.mdpi.com/1999-4907/14/6/1119/pdf
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (103607-1) - PXI - AP - DD - FORESTS/2023 -  -  - DIS