Rapid fertilizer turnover and dominant soil N mineralization in a cool-climate vineyard revealed by 15N tracing, biological N availability, and N exposure.
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| Title: | Rapid fertilizer turnover and dominant soil N mineralization in a cool-climate vineyard revealed by 15N tracing, biological N availability, and N exposure. |
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| Authors: | Zhang, Bangwei1 (AUTHOR), Burton, David L.1 (AUTHOR) dburton@Dal.Ca, Hammermeister, Andrew M.1 (AUTHOR), Fuller, Keith D.2 (AUTHOR), Price, Gordon W.1 (AUTHOR) |
| Source: | Biology & Fertility of Soils. Jul2026, Vol. 62 Issue 5, p743-760. 18p. |
| Subject Terms: | *Nitrogen in soils, *Nitrogen fertilizers, *Nitrogen, *Radiolabeling, *Vineyards |
| Geographic Terms: | Nova Scotia, Canada |
| Abstract: | The relative contributions of fertilizer N and native soil N cycling to seasonal vine N supply remain unclear in cool-climate vineyards. We conducted a two-year field experiment in a Chardonnay vineyard in Nova Scotia, Canada, to quantify soil N supply, fertilizer fate, and whole-system N use efficiency (NUE) using 15N-labelled ammonium sulfate, biological N availability, and in situ ion-exchange membrane measurements of N exposure. Three N fertilizer rates (0, 25, 50 kg N·ha− 1) were tested. Fertilizer N generated only a short-lived mineral N pulse, with a half-life of about 18–20 d, and contributed only ~ 12% of seasonal N exposure in the labelled treatment. By contrast, native soil organic N mineralization was estimated to provide ~ 80–90% of seasonal vine-available N. Fertilizer increased vegetative growth and early-season tissue N status, but did not improve berry yield or fruit quality. NUE remained low and similar among treatments (26–35%). By harvest, only ~ 9% of applied fertilizer N was recovered in berries, while most fertilizer N was no longer recovered in the measured aboveground biomass and 0–50 cm soil pools. N exposure was moderately associated with total N supply estimated from biological N availability (R2 ≈0.5), supporting its value as a time-integrated indicator of vineyard N availability. These findings indicate that seasonal vine N supply in this cool-climate vineyard was driven mainly by native soil N cycling rather than spring fertilizer input, highlighting the need to explicitly account for soil N supply in vineyard N budgeting and fertilization strategies. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 194420655 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Rapid fertilizer turnover and dominant soil N mineralization in a cool-climate vineyard revealed by <superscript>15</superscript>N tracing, biological N availability, and N exposure. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Bangwei%22">Zhang, Bangwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burton%2C+David+L%2E%22">Burton, David L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> dburton@Dal.Ca</i><br /><searchLink fieldCode="AR" term="%22Hammermeister%2C+Andrew+M%2E%22">Hammermeister, Andrew M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fuller%2C+Keith+D%2E%22">Fuller, Keith D.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Price%2C+Gordon+W%2E%22">Price, Gordon W.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Biology+%26+Fertility+of+Soils%22">Biology & Fertility of Soils</searchLink>. Jul2026, Vol. 62 Issue 5, p743-760. 18p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Nitrogen+in+soils%22">Nitrogen in soils</searchLink><br />*<searchLink fieldCode="DE" term="%22Nitrogen+fertilizers%22">Nitrogen fertilizers</searchLink><br />*<searchLink fieldCode="DE" term="%22Nitrogen%22">Nitrogen</searchLink><br />*<searchLink fieldCode="DE" term="%22Radiolabeling%22">Radiolabeling</searchLink><br />*<searchLink fieldCode="DE" term="%22Vineyards%22">Vineyards</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Nova+Scotia%22">Nova Scotia</searchLink><br /><searchLink fieldCode="DE" term="%22Canada%22">Canada</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The relative contributions of fertilizer N and native soil N cycling to seasonal vine N supply remain unclear in cool-climate vineyards. We conducted a two-year field experiment in a Chardonnay vineyard in Nova Scotia, Canada, to quantify soil N supply, fertilizer fate, and whole-system N use efficiency (NUE) using 15N-labelled ammonium sulfate, biological N availability, and in situ ion-exchange membrane measurements of N exposure. Three N fertilizer rates (0, 25, 50 kg N·ha− 1) were tested. Fertilizer N generated only a short-lived mineral N pulse, with a half-life of about 18–20 d, and contributed only ~ 12% of seasonal N exposure in the labelled treatment. By contrast, native soil organic N mineralization was estimated to provide ~ 80–90% of seasonal vine-available N. Fertilizer increased vegetative growth and early-season tissue N status, but did not improve berry yield or fruit quality. NUE remained low and similar among treatments (26–35%). By harvest, only ~ 9% of applied fertilizer N was recovered in berries, while most fertilizer N was no longer recovered in the measured aboveground biomass and 0–50 cm soil pools. N exposure was moderately associated with total N supply estimated from biological N availability (R2 ≈0.5), supporting its value as a time-integrated indicator of vineyard N availability. These findings indicate that seasonal vine N supply in this cool-climate vineyard was driven mainly by native soil N cycling rather than spring fertilizer input, highlighting the need to explicitly account for soil N supply in vineyard N budgeting and fertilization strategies. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194420655 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00374-026-02008-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 743 Subjects: – SubjectFull: Nitrogen in soils Type: general – SubjectFull: Nitrogen fertilizers Type: general – SubjectFull: Nitrogen Type: general – SubjectFull: Radiolabeling Type: general – SubjectFull: Vineyards Type: general – SubjectFull: Nova Scotia Type: general – SubjectFull: Canada Type: general Titles: – TitleFull: Rapid fertilizer turnover and dominant soil N mineralization in a cool-climate vineyard revealed by 15N tracing, biological N availability, and N exposure. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhang, Bangwei – PersonEntity: Name: NameFull: Burton, David L. – PersonEntity: Name: NameFull: Hammermeister, Andrew M. – PersonEntity: Name: NameFull: Fuller, Keith D. – PersonEntity: Name: NameFull: Price, Gordon W. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 01782762 Numbering: – Type: volume Value: 62 – Type: issue Value: 5 Titles: – TitleFull: Biology & Fertility of Soils Type: main |
| ResultId | 1 |
