Advanced search
1 file | 2.14 MB Add to list

Assessing nitrogen availability in biobased fertilizers : effect of vegetation on mineralization patterns

Hongzhen Luo (UGent) , Ana Robles Aguilar (UGent) , Ivona Sigurnjak (UGent) , Evi Michels (UGent) and Erik Meers (UGent)
Author
Organization
Project
  • 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

Downloads

  • published article.pdf
    • full text (Published version)
    • |
    • open access
    • |
    • PDF
    • |
    • 2.14 MB

Citation

Please use this url to cite or link to this publication:

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}},
}

Altmetric
View in Altmetric
Web of Science
Times cited: