Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+
It is well established that non-exchangeable NH4+ is an important N source for plants. However, release from clay minerals only occurs when the NH4+ concentration of the mineral environment declines below a certain level. This may be conditioned by the growing plant. Although root development differ...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2014-08-01
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| Series: | Plant, Soil and Environment |
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| Online Access: | https://pse.agriculturejournals.cz/artkey/pse-201408-0006_influence-of-pre-crop-and-root-architecture-on-the-mobilization-of-non-exchangeable-nh4.php |
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| author | P. Beuters T. Eichert H.W. Scherer |
| author_facet | P. Beuters T. Eichert H.W. Scherer |
| author_sort | P. Beuters |
| collection | DOAJ |
| description | It is well established that non-exchangeable NH4+ is an important N source for plants. However, release from clay minerals only occurs when the NH4+ concentration of the mineral environment declines below a certain level. This may be conditioned by the growing plant. Although root development differs depending on plant species, the influence of root architecture on the mobilization of non-exchangeable NH4+ is still open to question. We found that mobilization of non-exchangeable NH4+ was higher under oilseed rape as compared to barley; oilseed rape even has allorhize and fescue homorhize roots. This observation could be proved by labeling soil samples with 15NH4+, which were incubated in soil holders under oilseed rape and barley. The higher mobilization of non-exchangeable NH4+ by oilseed rape is therefore assumed to be caused by higher release of H+, displacing interlayer NH4+. Although allorhize roots from pre-crops create more stable biopores with an increasing diameter and living roots of the subsequent crop enter these biopores, we could not find an influence of the pre-crop on the mobilization of non-exchangeable NH4+. |
| first_indexed | 2024-04-10T08:10:40Z |
| format | Article |
| id | doaj.art-3e04030918074041a95ef1ddd38730be |
| institution | Directory Open Access Journal |
| issn | 1214-1178 1805-9368 |
| language | English |
| last_indexed | 2024-04-10T08:10:40Z |
| publishDate | 2014-08-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Plant, Soil and Environment |
| spelling | doaj.art-3e04030918074041a95ef1ddd38730be2023-02-23T03:46:08ZengCzech Academy of Agricultural SciencesPlant, Soil and Environment1214-11781805-93682014-08-0160837237810.17221/260/2014-PSEpse-201408-0006Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+P. Beuters0T. Eichert1H.W. Scherer2Department of Plant Nutrition, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, GermanyDepartment of Plant Nutrition, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, GermanyDepartment of Plant Nutrition, Institute of Crop Science and Resource Conservation, University of Bonn, Bonn, GermanyIt is well established that non-exchangeable NH4+ is an important N source for plants. However, release from clay minerals only occurs when the NH4+ concentration of the mineral environment declines below a certain level. This may be conditioned by the growing plant. Although root development differs depending on plant species, the influence of root architecture on the mobilization of non-exchangeable NH4+ is still open to question. We found that mobilization of non-exchangeable NH4+ was higher under oilseed rape as compared to barley; oilseed rape even has allorhize and fescue homorhize roots. This observation could be proved by labeling soil samples with 15NH4+, which were incubated in soil holders under oilseed rape and barley. The higher mobilization of non-exchangeable NH4+ by oilseed rape is therefore assumed to be caused by higher release of H+, displacing interlayer NH4+. Although allorhize roots from pre-crops create more stable biopores with an increasing diameter and living roots of the subsequent crop enter these biopores, we could not find an influence of the pre-crop on the mobilization of non-exchangeable NH4+.https://pse.agriculturejournals.cz/artkey/pse-201408-0006_influence-of-pre-crop-and-root-architecture-on-the-mobilization-of-non-exchangeable-nh4.phpammoniumfixationavailabilityrootsbiopores |
| spellingShingle | P. Beuters T. Eichert H.W. Scherer Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+ Plant, Soil and Environment ammonium fixation availability roots biopores |
| title | Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+ |
| title_full | Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+ |
| title_fullStr | Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+ |
| title_full_unstemmed | Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+ |
| title_short | Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+ |
| title_sort | influence of pre crop and root architecture on the mobilization of non exchangeable nh4 |
| topic | ammonium fixation availability roots biopores |
| url | https://pse.agriculturejournals.cz/artkey/pse-201408-0006_influence-of-pre-crop-and-root-architecture-on-the-mobilization-of-non-exchangeable-nh4.php |
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