Assessing nitrogen availability in biobased fertilizers : effect of vegetation on mineralization patterns
- Author
- Hongzhen Luo (UGent) , Ana Robles Aguilar (UGent) , Ivona Sigurnjak (UGent) , Evi Michels (UGent) and Erik Meers (UGent)
- Organization
- Project
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- Nutri2Cycle (Transition towards a more carbon and nutrient efficient agriculture in Europe)
- Abstract
- Biobased nitrogen (N) fertilizers derived from animal manure can substitute synthetic mineral N fertilizer and contribute to more sustainable agriculture. Practitioners need to obtain a reliable estimation of the biobased fertilizers' N value. This study compared the estimates for pig slurry (PS) and liquid fraction of digestate (LFD) using laboratory incubation and plant-growing experiments. A no-N treatment was used as control and calcium ammonium nitrate (CAN) as synthetic mineral fertilizer. After 100 days of incubation, the addition of PS and LFD resulted in a net N mineralization rate of 10.6 +/- 0.3% and 20.6 +/- 0.4% of the total applied N, respectively. The addition of CAN showed no significant net mineralization or immobilization (net N release 96 +/- 6%). In the pot experiment under vegetation, all fertilized treatments caused N immobilization with a negative net N mineralization rate of -51 +/- 11%, -9 +/- 4%, and -27 +/- 10% of the total applied N in CAN, PS, and LFD treatments, respectively. Compared to the pot experiment, the laboratory incubation without vegetation may have overestimated the N value of biobased fertilizers. Vegetation resulted in a lower estimation of available N from fertilizers, probably due to intensified competition with soil microbes or increased N loss via denitrification.
- Keywords
- N dynamics, immobilization, maize, incubation, digestate, N MINERALIZATION, PIG SLURRY, NUTRIENT AVAILABILITY, MICROBIAL TURNOVER, REPLACEMENT VALUE, ORGANIC-NITROGEN, SOIL PROPERTIES, CROP YIELD, ROOT, MAIZE
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8724589
- MLA
- Luo, Hongzhen, et al. “Assessing Nitrogen Availability in Biobased Fertilizers : Effect of Vegetation on Mineralization Patterns.” AGRICULTURE-BASEL, vol. 11, no. 9, 2021, doi:10.3390/agriculture11090870.
- APA
- Luo, H., Robles Aguilar, A., Sigurnjak, I., Michels, E., & Meers, E. (2021). Assessing nitrogen availability in biobased fertilizers : effect of vegetation on mineralization patterns. AGRICULTURE-BASEL, 11(9). https://doi.org/10.3390/agriculture11090870
- Chicago author-date
- Luo, Hongzhen, Ana Robles Aguilar, Ivona Sigurnjak, Evi Michels, and Erik Meers. 2021. “Assessing Nitrogen Availability in Biobased Fertilizers : Effect of Vegetation on Mineralization Patterns.” AGRICULTURE-BASEL 11 (9). https://doi.org/10.3390/agriculture11090870.
- Chicago author-date (all authors)
- Luo, Hongzhen, Ana Robles Aguilar, Ivona Sigurnjak, Evi Michels, and Erik Meers. 2021. “Assessing Nitrogen Availability in Biobased Fertilizers : Effect of Vegetation on Mineralization Patterns.” AGRICULTURE-BASEL 11 (9). doi:10.3390/agriculture11090870.
- Vancouver
- 1.Luo H, Robles Aguilar A, Sigurnjak I, Michels E, Meers E. Assessing nitrogen availability in biobased fertilizers : effect of vegetation on mineralization patterns. AGRICULTURE-BASEL. 2021;11(9).
- IEEE
- [1]H. Luo, A. Robles Aguilar, I. Sigurnjak, E. Michels, and E. Meers, “Assessing nitrogen availability in biobased fertilizers : effect of vegetation on mineralization patterns,” AGRICULTURE-BASEL, vol. 11, no. 9, 2021.
@article{8724589, abstract = {{Biobased nitrogen (N) fertilizers derived from animal manure can substitute synthetic mineral N fertilizer and contribute to more sustainable agriculture. Practitioners need to obtain a reliable estimation of the biobased fertilizers' N value. This study compared the estimates for pig slurry (PS) and liquid fraction of digestate (LFD) using laboratory incubation and plant-growing experiments. A no-N treatment was used as control and calcium ammonium nitrate (CAN) as synthetic mineral fertilizer. After 100 days of incubation, the addition of PS and LFD resulted in a net N mineralization rate of 10.6 +/- 0.3% and 20.6 +/- 0.4% of the total applied N, respectively. The addition of CAN showed no significant net mineralization or immobilization (net N release 96 +/- 6%). In the pot experiment under vegetation, all fertilized treatments caused N immobilization with a negative net N mineralization rate of -51 +/- 11%, -9 +/- 4%, and -27 +/- 10% of the total applied N in CAN, PS, and LFD treatments, respectively. Compared to the pot experiment, the laboratory incubation without vegetation may have overestimated the N value of biobased fertilizers. Vegetation resulted in a lower estimation of available N from fertilizers, probably due to intensified competition with soil microbes or increased N loss via denitrification.}}, articleno = {{870}}, author = {{Luo, Hongzhen and Robles Aguilar, Ana and Sigurnjak, Ivona and Michels, Evi and Meers, Erik}}, issn = {{2077-0472}}, journal = {{AGRICULTURE-BASEL}}, keywords = {{N dynamics,immobilization,maize,incubation,digestate,N MINERALIZATION,PIG SLURRY,NUTRIENT AVAILABILITY,MICROBIAL TURNOVER,REPLACEMENT VALUE,ORGANIC-NITROGEN,SOIL PROPERTIES,CROP YIELD,ROOT,MAIZE}}, language = {{eng}}, number = {{9}}, pages = {{18}}, title = {{Assessing nitrogen availability in biobased fertilizers : effect of vegetation on mineralization patterns}}, url = {{http://doi.org/10.3390/agriculture11090870}}, volume = {{11}}, year = {{2021}}, }
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