Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer study
There is limited knowledge regarding the impact of nitrification inhibitors (NIs) and straw application on fertilizer N retention and in-season release. We conducted a trial to study the transformation of 15N-labeled urea in soils during the growing season of maize. To facilitate multiple destructiv...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Soil Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fsoil.2025.1520476/full |
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| author | Zhi Quan Zhi Quan Zhi Quan Zhi Quan Shanlong Li Dong Liu Chang Liu Zhifeng Xun Zhifeng Xun Xin Chen Xin Chen Yunting Fang Yunting Fang Yunting Fang |
| author_facet | Zhi Quan Zhi Quan Zhi Quan Zhi Quan Shanlong Li Dong Liu Chang Liu Zhifeng Xun Zhifeng Xun Xin Chen Xin Chen Yunting Fang Yunting Fang Yunting Fang |
| author_sort | Zhi Quan |
| collection | DOAJ |
| description | There is limited knowledge regarding the impact of nitrification inhibitors (NIs) and straw application on fertilizer N retention and in-season release. We conducted a trial to study the transformation of 15N-labeled urea in soils during the growing season of maize. To facilitate multiple destructive samplings throughout the season, we utilized a larger plot (25 m2) and a lower abundance 15N-fertilizer (1.193%) than usual. Soil extractable mineral N, mineral fixed ammonium, and organic N (ON) recovered 20 ± 21% (mean ± standard deviation), 6 ± 5%, and 25 ± 6% of the applied fertilizer N across three sampling stages of the growing season. On average, the bioavailability of fertilizer N in extractable mineral form was four times higher than that of mineral fixed ammonium. In contrast, fertilizer-derived ON represented a relatively stable N pool, maintaining high content throughout the growing period and becoming the major form (82%–93%) in the pool of total soil 15N at the physiological maturity stage of maize. Moreover, the co-application of nitrapyrin (a type of NI) significantly promoted fertilizer N storage in the ON form while the effect of straw was not significant. In conclusion, the NI-induced promotion of fertilizer-derived ON likely plays a critical role in storing fertilizer N for subsequent cultivations, rather than providing N nutrients for crop uptake during the current season. |
| format | Article |
| id | doaj-art-367f6f66cb024885830454f78b5a22cb |
| institution | Kabale University |
| issn | 2673-8619 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Soil Science |
| spelling | doaj-art-367f6f66cb024885830454f78b5a22cb2025-01-22T07:14:53ZengFrontiers Media S.A.Frontiers in Soil Science2673-86192025-01-01510.3389/fsoil.2025.15204761520476Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer studyZhi Quan0Zhi Quan1Zhi Quan2Zhi Quan3Shanlong Li4Dong Liu5Chang Liu6Zhifeng Xun7Zhifeng Xun8Xin Chen9Xin Chen10Yunting Fang11Yunting Fang12Yunting Fang13Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaWeifang Academy of Modern Agriculture and Ecological Environment, Weifang, ChinaKey Laboratory of Stable Isotope Techniques and Applications, Shenyang, ChinaShenyang Agro-ecosystem Experimental Station, Chinese Academy of Sciences, Shenyang, ChinaInstitute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaInstitute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaInstitute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaInstitute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaSchool of Landscape Architecture, Liaoning Agricultural Vocational and Technical College, Yingkou, ChinaInstitute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaShenyang Agro-ecosystem Experimental Station, Chinese Academy of Sciences, Shenyang, ChinaInstitute of Applied Ecology, Chinese Academy of Sciences, Shenyang, ChinaWeifang Academy of Modern Agriculture and Ecological Environment, Weifang, ChinaKey Laboratory of Stable Isotope Techniques and Applications, Shenyang, ChinaThere is limited knowledge regarding the impact of nitrification inhibitors (NIs) and straw application on fertilizer N retention and in-season release. We conducted a trial to study the transformation of 15N-labeled urea in soils during the growing season of maize. To facilitate multiple destructive samplings throughout the season, we utilized a larger plot (25 m2) and a lower abundance 15N-fertilizer (1.193%) than usual. Soil extractable mineral N, mineral fixed ammonium, and organic N (ON) recovered 20 ± 21% (mean ± standard deviation), 6 ± 5%, and 25 ± 6% of the applied fertilizer N across three sampling stages of the growing season. On average, the bioavailability of fertilizer N in extractable mineral form was four times higher than that of mineral fixed ammonium. In contrast, fertilizer-derived ON represented a relatively stable N pool, maintaining high content throughout the growing period and becoming the major form (82%–93%) in the pool of total soil 15N at the physiological maturity stage of maize. Moreover, the co-application of nitrapyrin (a type of NI) significantly promoted fertilizer N storage in the ON form while the effect of straw was not significant. In conclusion, the NI-induced promotion of fertilizer-derived ON likely plays a critical role in storing fertilizer N for subsequent cultivations, rather than providing N nutrients for crop uptake during the current season.https://www.frontiersin.org/articles/10.3389/fsoil.2025.1520476/fullsoil N transformationmicrobial N assimilationfertilizer N fateimmobilization and remineralizationstraw returning |
| spellingShingle | Zhi Quan Zhi Quan Zhi Quan Zhi Quan Shanlong Li Dong Liu Chang Liu Zhifeng Xun Zhifeng Xun Xin Chen Xin Chen Yunting Fang Yunting Fang Yunting Fang Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer study Frontiers in Soil Science soil N transformation microbial N assimilation fertilizer N fate immobilization and remineralization straw returning |
| title | Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer study |
| title_full | Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer study |
| title_fullStr | Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer study |
| title_full_unstemmed | Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer study |
| title_short | Nitrification inhibitor promotes fertilizer N stabilization in soil as organic forms during a growing season of maize: a field 15N tracer study |
| title_sort | nitrification inhibitor promotes fertilizer n stabilization in soil as organic forms during a growing season of maize a field 15n tracer study |
| topic | soil N transformation microbial N assimilation fertilizer N fate immobilization and remineralization straw returning |
| url | https://www.frontiersin.org/articles/10.3389/fsoil.2025.1520476/full |
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