Testing biowaste materials as peat replacement in organo-mineral fertilizers
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Testing biowaste materials as peat replacement in organo-mineral fertilizers. / Sitzmann, Tomas Javier; Sica, Pietro; Grignani, Carlo; Magid, Jakob.
In: Frontiers in Sustainable Food Systems, Vol. 8, 1330843, 2024.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Testing biowaste materials as peat replacement in organo-mineral fertilizers
AU - Sitzmann, Tomas Javier
AU - Sica, Pietro
AU - Grignani, Carlo
AU - Magid, Jakob
N1 - Publisher Copyright: Copyright © 2024 Sitzmann, Sica, Grignani and Magid.
PY - 2024
Y1 - 2024
N2 - Organo-mineral fertilizers (OMFs) can have higher efficiency than mineral fertilizers. In Europe, peat is commonly used as an organic matrix in OMFs, as it is a highly stable organic material. However, peat extraction releases long-term stored organic C. Stabilized biowaste materials could replace peat in OMFs. Thus, this study aimed to understand how the variety of chemical properties in biowastes can influence OMF-soil interactions and nutrient availability to plants. Peat, green compost (GC), municipal solid waste compost (MSWC), and vermicompost (VC) were used as the organic matrix of OMFs with a C-N-P2O5 content of 7.5, 10, and 5%, respectively. OMFs were tested first in a ten-day plant-free incubation to measure Hedley P fractionation, nitrate, ammonium, total N in the soil, and CO2 and NH3 emissions. Further, a 30-day greenhouse trial measured maize yield and N and P use efficiencies. Controls included no fertilization (N0P0) and mineral N and P fertilization (MFNP). No differences were found in the incubation experiment for mineral N fractions in the soil. Fertilization significantly increased CO2 emissions, which were slightly higher in OMFs over MFNP, whereas OMFs significantly increased ammonia volatilization compared to MFNP. Available P had consistent results in the incubation and the greenhouse trials. Peat and MFNP had the highest water-and bicarbonate-P pools in the first experiment and higher yield and P use efficiency by maize. Therefore, OMFs from biowaste materials exhibited limited suitability for short growth cycles due to lower P use efficiency and higher ammonia volatilization.
AB - Organo-mineral fertilizers (OMFs) can have higher efficiency than mineral fertilizers. In Europe, peat is commonly used as an organic matrix in OMFs, as it is a highly stable organic material. However, peat extraction releases long-term stored organic C. Stabilized biowaste materials could replace peat in OMFs. Thus, this study aimed to understand how the variety of chemical properties in biowastes can influence OMF-soil interactions and nutrient availability to plants. Peat, green compost (GC), municipal solid waste compost (MSWC), and vermicompost (VC) were used as the organic matrix of OMFs with a C-N-P2O5 content of 7.5, 10, and 5%, respectively. OMFs were tested first in a ten-day plant-free incubation to measure Hedley P fractionation, nitrate, ammonium, total N in the soil, and CO2 and NH3 emissions. Further, a 30-day greenhouse trial measured maize yield and N and P use efficiencies. Controls included no fertilization (N0P0) and mineral N and P fertilization (MFNP). No differences were found in the incubation experiment for mineral N fractions in the soil. Fertilization significantly increased CO2 emissions, which were slightly higher in OMFs over MFNP, whereas OMFs significantly increased ammonia volatilization compared to MFNP. Available P had consistent results in the incubation and the greenhouse trials. Peat and MFNP had the highest water-and bicarbonate-P pools in the first experiment and higher yield and P use efficiency by maize. Therefore, OMFs from biowaste materials exhibited limited suitability for short growth cycles due to lower P use efficiency and higher ammonia volatilization.
KW - bio-waste
KW - biosolid
KW - municipal solid waste
KW - nutrient immobilization
KW - organo-mineral fertilizers
KW - peat replacement
KW - pruning compost
KW - vermicompost
U2 - 10.3389/fsufs.2024.1330843
DO - 10.3389/fsufs.2024.1330843
M3 - Journal article
AN - SCOPUS:85184158333
VL - 8
JO - Frontiers in Sustainable Food Systems
JF - Frontiers in Sustainable Food Systems
SN - 2571-581X
M1 - 1330843
ER -
ID: 382504923