Potato yield response and seasonal nitrate leaching as influenced by nitrogen management
Potato yield response and seasonal nitrate leaching as influenced by nitrogen management
Simple item page
Full item details
- creativework.keywords - en
- polymer-coated urea
- irrigation
- suction lysimeter
- residual soil nitrogen
- creativework.keywords - fr
- urée enrobée de polymère
- irrigation
- lysimètre à aspiration
- azote résiduel dans le sol
- dc.contributor.author
- Clément, Chedzer-Clarc
- Cambouris, Athyna N.
- Ziadi, Noura
- Zebarth, Bernie J.
- Karam, Antoine
- dc.date.accepted
- 2021-10-08
- dc.date.accessioned
- 2023-06-26T21:20:18Z
- dc.date.available
- 2023-06-26T21:20:18Z
- dc.date.issued
- 2021-10-13
- dc.date.submitted
- 2021-09-16
- dc.description.abstract - en
- Nitrate leaching is of great environmental concern, particularly with potatoes grown on sandy soils. This 3-year study evaluated the effect of three N rates (100, 150, and 200 kg ha−1) of single applications of polymer-coated urea (PCU) and a 75% PCU + 25% urea mixture, plus a conventional split application of 200 kg N ha−1 of a 50% ammonium sulfate + 50% calcium ammonium nitrate mixture (CONV) on NO3−-N leaching, potato yield, and N uptake under irrigated and non-irrigated conditions on a sandy soil in Quebec (Canada). Fertilizer N application increased growing season NO3−-N leaching only under irrigation. On average, irrigation increased seasonal NO3−-N leaching by 52%. Under irrigated conditions, PCU reduced NO3−-N leaching compared to PCU + urea. However, both PCU and PCU + urea significantly increased NO3−-N leaching compared to the CONV at the equivalent N rate of 200 kg N ha−1. This was attributed to the timing of soil N availability and deep-water percolation. Total (TY) and marketable (MY) yields in the CONV were similar to those in the PCU applied at the equivalent N rate of 200 kg N ha−1. Despite lower plant N uptake, PCU resulted in greater TY and MY compared to PCU + urea. Residual soil inorganic N was greater for PCU and PCU + urea compared to the CONV, providing evidence that PCU products have the potential to increase NO3−-N leaching after the growing season. In this study, PCU was an agronomically and environmentally better choice than PCU + urea. The results also showed that the efficiency of PCU to reduce seasonal NO3−-N leaching may vary according to the timing of precipitation and irrigation.
- dc.identifier.citation
- Clément, C.-C., Cambouris, A. N., Ziadi, N., Zebarth, B. J., & Karam, A. (2021). Potato yield response and seasonal nitrate leaching as influenced by nitrogen management. Agronomy, 11(10), 2055. https://doi.org/10.3390/agronomy11102055
- dc.identifier.doi
- https://doi.org/10.3390/agronomy11102055
- dc.identifier.issn
- 2073-4395
- dc.identifier.uri
- https://open-science.canada.ca/handle/123456789/888
- dc.language.iso
- en
- dc.publisher
- MDPI
- dc.rights - en
- Creative Commons Attribution 4.0 International (CC BY 4.0)
- dc.rights - fr
- Creative Commons Attribution 4.0 International (CC BY 4.0)
- dc.rights.openaccesslevel - en
- Gold
- dc.rights.openaccesslevel - fr
- Or
- dc.rights.uri - en
- https://creativecommons.org/licenses/by/4.0/
- dc.rights.uri - fr
- https://creativecommons.org/licenses/by/4.0/deed.fr
- dc.subject - en
- Agriculture
- dc.subject - fr
- Agriculture
- dc.subject.en - en
- Agriculture
- dc.subject.fr - fr
- Agriculture
- dc.title - en
- Potato yield response and seasonal nitrate leaching as influenced by nitrogen management
- dc.type - en
- Article
- dc.type - fr
- Article
- local.acceptedmanuscript.articlenum
- 2055
- local.article.journalissue
- 10
- local.article.journaltitle
- Agronomy
- local.article.journalvolume
- 11
- local.peerreview - en
- Yes
- local.peerreview - fr
- Oui
Download(s)
Original bundle
1 - 1 of 1
Name: PotatoYieldResponseAndSeasonalNitrateLeachingInfluencedByNitrogenManagement_2021.pdf
Size: 1.3 MB
Format: PDF
Collection(s)