Modeling tillage and manure application on soil phosphorous loss under climate change

Wang, Zhaozhi; Zhang, Tiequan; Tan, Ching Shen; Xue, Lulin; Bukovsky, Melissa; Qi, Zhiming

Modeling tillage and manure application on soil phosphorous loss under climate change

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creativework.keywords - en: tillage; manure; climate change; dissolved reactive phosphorus (DRP); EPIC model; soil phosphorus; eutrophication; Environmental Policy Integrated Climate Model
creativework.keywords - fr: eutrophisation; phosphore du sol; travail du sol; fumier; le modèle EPIC; modèle climatique intégré aux décisions à portée environnementale; phosphore réactif dissous; changements climatiques
dc.contributor.author: Wang, Zhaozhi; Zhang, Tiequan; Tan, Ching Shen; Xue, Lulin; Bukovsky, Melissa; Qi, Zhiming
dc.date.accepted: 2022-01-06
dc.date.accessioned: 2024-11-04T21:58:31Z
dc.date.available: 2024-11-04T21:58:31Z
dc.date.issued: 2022-02-26
dc.date.submitted: 2021-06-22
dc.description.abstract - en: Phosphorus (P) losses from non-point sources into receiving water bodies play a significant role in eutrophication. Given their failure to adequately control eutrophication in the Lake Erie, conservation recommendations for agricultural watersheds should be reconsidered, particularly under climate change. Using the Environmental Policy Integrated Climate model, the potential impacts on crop yield, surface runoff, tile drainage, and relevant dissolved reactive phosphorus (DRP) losses from manure-amended corn-soybean rotation plots in the Lake Erie basin were estimated for six tillage methods with different mixing efficiencies and manure broadcast application. These were investigated under twelve different regional and global future climate simulations. Tillage alone proved to have only a minor impact on mean corn yield (± 2%). Climate change led to large uncertainties under the single tillage treatment. As a result of the combined effects of biogeochemical processes (e.g., supply) and hydrological (e.g., transport), strong negative relationships (R2 = 0.98) were found between tillage mixing efficiency and DRP loss in surface runoff, tile drainage, and total DRP loss. The impacts of combined manure application (broadcast) and tillage on crop yield and flow volume were similar as those of tillage alone. With respect to total DRP losses, the effects of labile P content change outweighed those of surface runoff or tile drainage change (hydrologic). This resulted in a change in total DRP losses ranging from − 60% to + 151%, with being closely correlated with decreasing tillage mixing efficiency (R2 = 0.94) from moldboard to no-till. Therefore, rotational tillage should be considered for DRP loss reduction and energy saving.
dc.identifier.citation: Wang, Z., Zhang, T., Tan, C. S., Xue, L., Bukovsky, M., & Qi, Z. (2022). Modeling tillage and manure application on soil phosphorous loss under climate change. Nutrient Cycling in Agroecosystems, 122, 219–239. https://doi.org/10.1007/s10705-022-10192-7
dc.identifier.doi: https://doi.org/10.1007/s10705-022-10192-7
dc.identifier.issn: 1573-0867; 1385-1314
dc.identifier.uri: https://open-science.canada.ca/handle/123456789/3107
dc.language.iso: en
dc.publisher - en: Springer Nature
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.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; Manure; Climate change
dc.subject - fr: Agriculture; Fumier; Changement climatique
dc.subject.en - en: Agriculture; Manure; Climate change
dc.subject.fr - fr: Agriculture; Fumier; Changement climatique
dc.title - en: Modeling tillage and manure application on soil phosphorous loss under climate change
dc.type - en: Article
dc.type - fr: Article
local.article.journaltitle - en: Nutrient Cycling in Agroecosystems
local.article.journalvolume: 122
local.pagination: 219-239
local.peerreview - en: Yes
local.peerreview - fr: Oui