Soil organic carbon and clay content as deciding factors for net nitrogen mineralization and cereal yields in boreal mineral soils
dc.contributor.author | Soinne, Helena | |
dc.contributor.author | Keskinen, Riikka | |
dc.contributor.author | Räty, Mari | |
dc.contributor.author | Kanerva, Sanna | |
dc.contributor.author | Turtola, Eila | |
dc.contributor.author | Kaseva, Janne | |
dc.contributor.author | Nuutinen, Visa | |
dc.contributor.author | Simojoki, Asko | |
dc.contributor.author | Salo, Tapio | |
dc.contributor.departmentid | 4100211210 | |
dc.contributor.departmentid | 4100110510 | |
dc.contributor.departmentid | 4100210910 | |
dc.contributor.departmentid | 4100110410 | |
dc.contributor.departmentid | 4100111010 | |
dc.contributor.departmentid | 4100110510 | |
dc.contributor.departmentid | 4100110410 | |
dc.contributor.organization | Luonnonvarakeskus | |
dc.date.accessioned | 2020-07-06T07:48:21Z | |
dc.date.accessioned | 2025-05-28T07:27:04Z | |
dc.date.available | 2020-07-06T07:48:21Z | |
dc.date.issued | 2021 | |
dc.description.abstract | To achieve appropriate yield levels, inherent nitrogen (N) supply and biological N fixation are often complemented by fertilization. To avoid economic losses and negative environmental impacts due to over-application of N fertilizer, estimation of the inherent N supply is critical. We aimed to identify the roles of soil texture and organic matter in N mineralization and yield levels attained in cereal cultivation with or without N fertilization in boreal mineral soils. First, the net N mineralization and soil respiration were measured by laboratory incubation with soil samples varying in clay and organic carbon (C) contents. Secondly, to estimate the inherent soil N supply under field conditions, both unfertilized and fertilized cereal yields were measured in fields on clay soils (clay 30–78%) and coarse-textured soils (clay 0–28%). In clay soils (C 2.5–9.0%), both the net N mineralization and the cereal yields (without and with fertilization) decreased with increasing clay/C ratio. Moreover, in soils with high clay/C ratio, the agronomic N use efficiency (additional yield per kg of fertilizer N) varied considerably, indicating the presence of growth limitations other than N. In coarse-textured soils, the yield increase attained by fertilization increased with increasing organic C. Our results indicate that for clay soils in a cool and humid climate, the higher the clay content, the more organic C is needed to produce reasonable yields and to ensure efficient use of added nutrients without high N losses to the environment. For coarse soils having a rather high mean organic C of 2.3%, the organic C appeared to improve agronomic N use efficiency. For farmers, simple indicators such as the clay/C ratio or the use of non-N-fertilized control plots may be useful for site-specific adjustment of the rates of N fertilization. | |
dc.description.vuosik | 2020 | |
dc.format.bitstream | true | |
dc.format.pagerange | 1497-1512 | |
dc.identifier.olddbid | 488553 | |
dc.identifier.oldhandle | 10024/546017 | |
dc.identifier.uri | https://jukuri.luke.fi/handle/11111/12589 | |
dc.identifier.urn | URN:NBN:fi-fe2020070646946 | |
dc.language.iso | en | |
dc.okm.corporatecopublication | ei | |
dc.okm.discipline | 4111 | |
dc.okm.internationalcopublication | ei | |
dc.okm.openaccess | 2 = Hybridijulkaisukanavassa ilmestynyt avoin julkaisu | |
dc.okm.selfarchived | on | |
dc.publisher | John Wiley & Sons | |
dc.relation.doi | 10.1111/ejss.13003 | |
dc.relation.ispartofseries | European journal of soil science | |
dc.relation.issn | 1351-0754 | |
dc.relation.issn | 1365-2389 | |
dc.relation.numberinseries | 4 | |
dc.relation.volume | 72 | |
dc.rights | CC BY 4.0 | |
dc.source.identifier | https://jukuri.luke.fi/handle/10024/546017 | |
dc.subject.yso | agricultural soil | |
dc.subject.yso | clay | |
dc.subject.yso | N mineralization | |
dc.subject.yso | soil carbon mineralization | |
dc.subject.yso | soil fertility | |
dc.subject.yso | yield response | |
dc.teh | 41007-00169301 | |
dc.teh | 41007-00060300 | |
dc.title | Soil organic carbon and clay content as deciding factors for net nitrogen mineralization and cereal yields in boreal mineral soils | |
dc.type | publication | |
dc.type.okm | fi=A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä|sv=A1 Originalartikel i en vetenskaplig tidskrift|en=A1 Journal article (refereed), original research| | |
dc.type.version | fi=Publisher's version|sv=Publisher's version|en=Publisher's version| |
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