Frick, Hanna; Oberson, Astrid; Cormann, Michael; Wettstein, Hans-Rudolf; Frossard, Emmanuel and Bünemann, Else Katrin (2022) Similar distribution of 15N labeled cattle slurry and mineral fertilizer in soil after one year. Nutrient Cycling in Agroecosystems, online, pp. 1-17.
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Document available online at: https://link.springer.com/article/10.1007/s10705-022-10205-5
Summary in the original language of the document
Targeted use of animal manures as a nitrogen (N) fertilizer is challenging because of their poorly predictable N fertilizer value. An enhanced understanding of their N transformation processes in soil under field conditions is necessary to better synchronize N availability and crop N demand. 15N labeled cattle slurry, produced by feeding a heifer with 15N labeled ryegrass hay, was used in an on-farm trial on two neighboring fields, cropped with maize or grass-clover, in order to assess crop N uptake and N dynamics in the topsoil. Recovery of applied total N in plant biomass was higher for mineral fertilizer (Min) (45–48%) than for slurry (Slu) (17–22%) when applied at the same rate of mineral N. Also, N derived from fertilizer in plant biomass was higher for Min than for Slu, due to both greater NH3 emissions and greater initial immobilization of slurry N. Despite initial differences between the two in the relative distribution of residual fertilizer N in soil N pools, already in the following spring the majority (77–89%) of residual N from both fertilizers was found in the non-microbial organic N pool. Of the applied total N, 18–26% remained in the topsoil after the first winter for Min, compared to 32–52% for Slu. Thus, the proportion of fertilizer N not taken up by the first crop after application, enters the soil organic N pool and must be re-mineralized to become plant available.
EPrint Type: | Journal paper |
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Keywords: | Nährstoffmanagement, Feldversuche, Stickstoff, NitroGäu, Abacus, FiBL10106 |
Agrovoc keywords: | Language Value URI English nitrogen fertilizers http://aims.fao.org/aos/agrovoc/c_5195 English slurry http://aims.fao.org/aos/agrovoc/c_16602 English mineral fertilizers -> inorganic fertilizers http://aims.fao.org/aos/agrovoc/c_27870 |
Subjects: | Soil > Nutrient turnover Environmental aspects > Air and water emissions |
Research affiliation: | Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Crops > Field trials Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Crops > Composting and fertilizer application > Nitrogen Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil > Nutrient management |
DOI: | 10.1007/s10705-022-10205-5 |
Related Links: | https://www.fibl.org/en/themes/projectdatabase/projectitem/project/1288 |
Deposited By: | Forschungsinstitut für biologischen Landbau, FiBL |
ID Code: | 44624 |
Deposited On: | 17 Nov 2022 09:46 |
Last Modified: | 17 Nov 2022 09:46 |
Document Language: | English |
Status: | Published |
Refereed: | Peer-reviewed and accepted |
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