Regional differences in nitrogen balance and nitrogen use efficiency in the rice–livestock system of Uruguay

Simple item page
dc.contributor.authorCastillo, Jesús
dc.contributor.authorKirk, Guy J. D.
dc.contributor.authorRivero, Jordana
dc.contributor.authorHaefele, Stephan M.
dc.date.accessioned2023-02-15T14:02:53Z
dc.date.available2023-02-15T14:02:53Z
dc.date.issued2023-02-14
dc.description.abstractThe reintegration of crops with livestock systems is proposed as a way of improving the environmental impacts of food production globally, particularly the impact involving nitrogen (N). A detailed understanding of processes governing N fluxes and budgets is needed to design productive and efficient crop–livestock systems. This study aimed to investigate regional differences in N balance (NBAL, defined as all N inputs minus outputs), N use efficiency (NUE, defined as N outputs/inputs × 100), and N surplus (NSURP, defined as all N inputs minus only outputs in food products) in the rice–livestock system of Uruguay. Three regions across Uruguay are distinguished based on soil fertility and length of pasture rotation. The northern region has high soil fertility and short length of rotation (HFSR); the central region has medium soil fertility and medium length of rotation (MFMR); the eastern region has low fertility and long pasture rotation (LFLR). Results for the last 18 years show a very high NUE (90%) for the rice component in all rotations, associated with negative NBALs ranging from −35 kg N ha−1 yr−1 in HFSR to −3 kg N ha−1 yr−1 in LFLR. However, the livestock component, which overall had low animal productivity (<2 kg N ha−1 yr−1), had low NUE (<10%) but positive NBALs in all the rotations, sustaining N supply in the rice component. At the system level, NUE was high (60%) and NBAL was slightly positive in all rotations (from +2.8 kg N ha−1 yr−1 in HFSR to +8.5 kg N ha−1 yr−1 in LFLR). Because of a recent increase in the N fertilizer dose in rice, NSURP for the overall system was intermediate (40 kg N ha−1 yr−1) and should be monitored in the future. Efforts to improve the system's efficiency should focus on the livestock component.en_UK
dc.identifier.citationCastillo J, Kirk GJD, Rivero MJ, Haefele SM. (2023) Regional differences in nitrogen balance and nitrogen use efficiency in the rice–livestock system of Uruguay. Frontiers in Sustainable Food Systems, Volume 7, February 2023, Article number 1104229en_UK
dc.identifier.eissn2571-581X
dc.identifier.urihttps://doi.org/10.3389/fsufs.2023.1104229
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19202
dc.language.isoenen_UK
dc.publisherFrontiersen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectrice-pasture rotations lengthen_UK
dc.subjectnitrogen budgetsen_UK
dc.subjectnutrient balanceen_UK
dc.subjectfull-chain NUEen_UK
dc.subjectNUE development pathwayen_UK
dc.titleRegional differences in nitrogen balance and nitrogen use efficiency in the rice–livestock system of Uruguayen_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
rice-livestock_system_of_Uruguay-2023.pdf
Size:
1.83 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SWEE)