Fecha/hora: 15/06/2024 18:21:19

Biblioteca(s): 	INIA La Estanzuela.	
Fecha corriente: 	07/04/2021	
Fecha de la última actualización: 	07/04/2021	
Autoria: 	BUSTAMANTE-SILVEIRA, M.; SIRI-PRIETO, G.; CARRASCO-LETELIER, L.	
Afiliación: 	MAURICIO BUSTAMANTE-SILVEIRA, Estación Experimental Mario Cassinoni (EEMAC), Facultad de Agronomía, Universidad de la República, Ruta 3 km 363, Paysandú, Uruguay.; GUILLERMO SIRI-PRIETO, stación Experimental Mario Cassinoni (EEMAC), Facultad de Agronomía, Universidad de la República, Ruta 3 km 363, Paysandú, Uruguay; LEONIDAS CARRASCO-LETELIER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.	
Título: 	Water footprints of bioethanol cropping systems in Uruguay,	
Año de publicación: 	2021	
Fuente/Imprenta: 	Agricultural Water Management, 30 June 2021, Volume 252, Article 106870. Doi: https://doi.org/10.1016/j.agwat.2021.106870	
DOI: 	10.1016/j.agwat.2021.106870	
Idioma: 	Inglés	
Notas: 	Article history: Received 4 June 2020/ Revised 10 March 2021/ Accepted 13 March 2021/ Available online 5 April 2021. Corresponding author:
E-mail address: bustamantefagro@gmail.com (M. Bustamante-Silveira).	
Contenido: 	ABSTRACT: Bioenergy is the most widely used type of renewable energy. However, an assessment of water consumption and 
pollution is necessary to determine the water demand of this energy source. The Uruguayan public policy to decarbonize energy sources highlighted the use of bioenergy. In this regard, we analyzed the water footprint (WF) of four bioethanol cropping systems: (1) maize-wheat-sorghum rotation without harvested crop residues (MWS), (2) maize-wheat-sorghum rotation with harvested crop residues (MWS-R), (3) continuous sweet sorghum (Ss), and (4) switchgrass (Sw). In order to assess the WF of bioethanol production, green (WFgreen) and gray 
(WFgray) components of crop production were calculated by considering the different volumes of water involved 
in evaporation, rainfall, and fertilizer pollution. Annual cropping systems (i.e., MWS, MWS-R, Ss) had the largest 
WFs (23.1?30.9 m3 L? 1 ethanol). Switchgrass had the lowest values per hectare and per liter of ethanol 
(12,735 m3 (ha yr)? 1 and 3.8 m3 L? 1 ethanol, respectively). The volume required to assimilate phosphorous (P) and 
nitrogen (N) fertilizers played a significant role in bioethanol cropping systems. In annual systems, WFgray was 
the main fraction (87%) of total WF (WFT). Averaged across all cropping systems, WFgray related to P was 13 
times larger than WFgray related to N.	
Palabras-Clave: 	BIOENERGY; GRAY WATER; GREEN WATER; HUELLA HIDRICA; INTESIFICATION; SOIL EROSION.	
Thesagro: 	ENERGIA RENOVABLE.	
Categoría del tema: 	--	
Registro original: 	INIA La Estanzuela (LE)	
Ejemplares: 	LE - (103309-1) - PXI - AP - DD - PP/Agricultural Water Management/2021 -  -  - DIS