Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects
Sustainability of vegetable production is a declared goal for a more sustainable agriculture in the future. Nitrogen is a crucial macro- nutrient for achieving high yields and quality such as intense greenness in vegetables, particularly in leafy varieties. However, excessive nitrogen contributes t...
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| Format: | Article |
| Language: | English |
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Julius Kühn-Institut
2025-06-01
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| Series: | Journal of Applied Botany and Food Quality |
| Online Access: | https://ojs.openagrar.de/index.php/JABFQ/article/view/17826 |
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| author | Guanghui Wei Xudong Zhang Heike Hahn Thorsten Strissel Monika A. Wimmer Christian Zörb |
| author_facet | Guanghui Wei Xudong Zhang Heike Hahn Thorsten Strissel Monika A. Wimmer Christian Zörb |
| author_sort | Guanghui Wei |
| collection | DOAJ |
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Sustainability of vegetable production is a declared goal for a more sustainable agriculture in the future. Nitrogen is a crucial macro-
nutrient for achieving high yields and quality such as intense greenness in vegetables, particularly in leafy varieties. However, excessive nitrogen contributes to greenness but can lead to groundwater pollution through nitrate leaching. This study evaluates a strategy to enhance the sustainability of kohlrabi production (Brassica oleracea) by reducing N application while improving N use efficiency. It further investigates how product quality such as glucosinolate concentration is affected under these conditions. By applying 80% and 50% of the nitrogen fertilizers which contain an urease inhibitor or an additional nitrification inhibitor, higher sustainability through the mitigation of nitrogen losses is expected. The results show that a 20% reduction in N application is feasible with minimal yield loss and no significant effects on crop vitality or leaf greenness. The type of fertilizer had little impact on yield when 80% of N was supplied. While a 20% N reduction influences glucosinolate profiles, the effect on taste and quality, remains unclear. Overall, a 20% reduction in nitrogen fertilization can be accomplished without yield loss or significant changes in outer quality, although it may slightly alter glucosinolate profiles and taste perception.
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| format | Article |
| id | doaj-art-0dea54cb32b04a6cb6139e4e045a7c3f |
| institution | OA Journals |
| issn | 1613-9216 1439-040X |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Julius Kühn-Institut |
| record_format | Article |
| series | Journal of Applied Botany and Food Quality |
| spelling | doaj-art-0dea54cb32b04a6cb6139e4e045a7c3f2025-08-20T02:10:24ZengJulius Kühn-InstitutJournal of Applied Botany and Food Quality1613-92161439-040X2025-06-019810.5073/JABFQ.2025.098.008Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspectsGuanghui Wei0https://orcid.org/0009-0002-3427-0490Xudong Zhang1Heike Hahn2Thorsten Strissel3Monika A. Wimmer4Christian Zörb5https://orcid.org/0000-0003-0000-5138Institute of Crop Science, Quality of Plant Products, University of Hohenheim, Stuttgart, GermanyInstitute of Crop Science, Quality of Plant Products, University of Hohenheim, Stuttgart, GermanyAgricultural Application Research, SKW Stickstoffwerke Piesteritz GmbH, Borsdorf, GermanyGemüsering Stuttgart GmbH, Stuttgart, GermanyInstitute of Crop Science, Quality of Plant Products, University of Hohenheim, Stuttgart, GermanyInstitute of Crop Science, Quality of Plant Products, University of Hohenheim, Stuttgart, Germany Sustainability of vegetable production is a declared goal for a more sustainable agriculture in the future. Nitrogen is a crucial macro- nutrient for achieving high yields and quality such as intense greenness in vegetables, particularly in leafy varieties. However, excessive nitrogen contributes to greenness but can lead to groundwater pollution through nitrate leaching. This study evaluates a strategy to enhance the sustainability of kohlrabi production (Brassica oleracea) by reducing N application while improving N use efficiency. It further investigates how product quality such as glucosinolate concentration is affected under these conditions. By applying 80% and 50% of the nitrogen fertilizers which contain an urease inhibitor or an additional nitrification inhibitor, higher sustainability through the mitigation of nitrogen losses is expected. The results show that a 20% reduction in N application is feasible with minimal yield loss and no significant effects on crop vitality or leaf greenness. The type of fertilizer had little impact on yield when 80% of N was supplied. While a 20% N reduction influences glucosinolate profiles, the effect on taste and quality, remains unclear. Overall, a 20% reduction in nitrogen fertilization can be accomplished without yield loss or significant changes in outer quality, although it may slightly alter glucosinolate profiles and taste perception. https://ojs.openagrar.de/index.php/JABFQ/article/view/17826 |
| spellingShingle | Guanghui Wei Xudong Zhang Heike Hahn Thorsten Strissel Monika A. Wimmer Christian Zörb Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects Journal of Applied Botany and Food Quality |
| title | Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects |
| title_full | Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects |
| title_fullStr | Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects |
| title_full_unstemmed | Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects |
| title_short | Enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects |
| title_sort | enhancing sustainability in kohlrabi production by balancing nitrogen use without compromising inner and outer quality aspects |
| url | https://ojs.openagrar.de/index.php/JABFQ/article/view/17826 |
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