This work evaluates the release of phosphorus contained in the digestate from the anaerobic digestion of pig manure, through an acidification process. The objective of this acidification is to increase the amount of phosphorus available in the digestate liquid fraction and, subsequently, recover this element by chemical precipitation in the form of struvite or calcium phosphate. Two digestate samples (one fresh and one old) were studied and treated by adding various amounts of sulphuric acid to the different digestate fractions (raw digestate, solid fraction and liquid fraction). For the raw digestate, phosphorus releases higher than 95% were obtained for pH 4.0. In the last part of the experiment, the influence of acid pre-treatment on the reaction yield of phosphorus precipitation, in the form of struvite or calcium phosphate, was determined. Improvements in reaction yield were obtained up to 15% for struvite and 80% for calcium phosphate, increasing also in 7.5 times the amount of phosphorus available in the digestate liquid fraction, for both cases.
", "keywords": ["Biofertiliser", "FEASIBILITY", "NUTRIENT RECOVERY", "PH", "Struvite", "Swine", "SWINE WASTE-WATER", "0211 other engineering and technologies", "02 engineering and technology", "7. Clean energy", "01 natural sciences", "CALCIUM", "Acidification", "ANAEROBIC-DIGESTION", "Environmental Chemistry", "PHOSPHORUS REMOVAL", "Animals", "Chemical Precipitation", "Toxicology and Mutagenesis", "Anaerobiosis", "Organic waste", "SLUDGE", "0105 earth and related environmental sciences", "Phosphorus", "General Medicine", "Pollution", "6. Clean water", "Manure", "Nutrient recovery", "Health", "Earth and Environmental Sciences", "Release", "PRECIPITATION", "Waste and Biomass Management & Valorization", "CRYSTALLIZATION"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s11356-020-10918-6.pdf"}, {"href": "https://doi.org/10.1007/s11356-020-10918-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20and%20Pollution%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11356-020-10918-6", "name": "item", "description": "10.1007/s11356-020-10918-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11356-020-10918-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-10-03T00:00:00Z"}}, {"id": "10.1016/j.biortech.2012.08.124", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:16Z", "type": "Journal Article", "created": "2012-09-03", "title": "Comparing Environmental Consequences Of Anaerobic Mono- And Co-Digestion Of Pig Manure To Produce Bio-Energy - A Life Cycle Perspective", "description": "The aim of this work was to assess the environmental consequences of anaerobic mono- and co-digestion of pig manure to produce bio-energy, from a life cycle perspective. This included assessing environmental impacts and land use change emissions (LUC) required to replace used co-substrates for anaerobic digestion. Environmental impact categories considered were climate change, terrestrial acidification, marine and freshwater eutrophication, particulate matter formation, land use, and fossil fuel depletion. Six scenarios were evaluated: mono-digestion of manure, co-digestion with: maize silage, maize silage and glycerin, beet tails, wheat yeast concentrate (WYC), and roadside grass. Mono-digestion reduced most impacts, but represented a limited source for bio-energy. Co-digestion with maize silage, beet tails, and WYC (competing with animal feed), and glycerin increased bio-energy production (up to 568%), but at expense of increasing climate change (through LUC), marine eutrophication, and land use. Co-digestion with wastes or residues like roadside grass gave the best environmental performance.", "keywords": ["2. Zero hunger", "Swine", "emissions", "indirect land use change", "02 engineering and technology", "bioenergy", "Environment", "15. Life on land", "pig slurry", "renewable energy", "7. Clean energy", "6. Clean water", "Consequential LCA", "Refuse Disposal", "12. Responsible consumption", "Manure", "Bacteria", " Anaerobic", "13. Climate action", "Biofuels", "greenhouse gases", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "systems", "Animals", "Methane"]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2012.08.124"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2012.08.124", "name": "item", "description": "10.1016/j.biortech.2012.08.124", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2012.08.124"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-12-01T00:00:00Z"}}, {"id": "10.1016/j.biortech.2019.122728", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:16Z", "type": "Journal Article", "created": "2020-01-02", "title": "Effects of copper salts on performance, antibiotic resistance genes, and microbial community during thermophilic anaerobic digestion of swine manure", "description": "This study investigated methane production and ARGs reduction during thermophilic AD of swine manure with the addition of different Cu salts (cupric sulfate, cupric glycinate, and the 1:1 mixture of these two salts). Results showed methane production was increased by 28.78% through adding mixed Cu salts. The mixed Cu group effectively reduced total ARGs abundance by 26.94%, suggesting mixed Cu salts did not promote the potential ARGs risk. The positive effects of mixed Cu salts on AD performance and ARGs removal might be ascribed to the low bioavailability. Microbial community analysis indicated the highest abundances of Clostridia_MBA03 and Methanobacterium in the mixed Cu group might cause the increased methane production. Spearman's rank correlation analysis elucidated the succession in microbial community induced by environmental factors was the main driver for shaping ARGs profiles. Thus, mixed Cu salts could be an alternative to replace the inorganic Cu salt in animal feed additives.", "keywords": ["Manure", "Genes", " Bacterial", "Swine", "Microbiota", "Animals", "Drug Resistance", " Microbial", "Anaerobiosis", "01 natural sciences", "Copper", "6. Clean water", "Anti-Bacterial Agents", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Wu, Xiayuan, Tian, Zhenzhen, Lv, Zuopeng, Chen, Zixuan, Liu, Yongdi, Yong, Xiaoyu, Zhou, Jun, Xie, Xinxin, Jia, Honghua, Wei, Ping,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2019.122728"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2019.122728", "name": "item", "description": "10.1016/j.biortech.2019.122728", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2019.122728"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2010.08.026", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:19Z", "type": "Journal Article", "created": "2010-09-13", "title": "Optimization Of Pig Slurry Application To Heavy Metal Polluted Soils Monitoring Nitrification Processes", "description": "Nitrification is often negatively affected by heavy metal pollution in soils, this limiting land revegetation. Thus, the potential use of pig slurry as a nitrogen-rich organic amendment in different heavy metal contaminated soils has been evaluated; this also being a way of recycling this waste. In order to identify the factors affecting nitrification processes in heavy metal polluted soils (soil pH, heavy metal solubility and the N source), incubation experiments were run using two polluted soils with different pH values (5.0 and 7.1) and a non-contaminated soil (pH 8.2). Ammonium was added as pig slurry or as ammonium sulphate for comparison (both added at 150 mg NH(4)(+)-N kg(-1) of soil). Pig slurry provoked higher nitrification rates and N-immobilisation than ammonium sulphate, especially in the neutral-polluted soil, reflecting an improvement of the microbial activity in the soil. The microbial immobilisation of N led to an inverse relationship between the amount of N added and nitrate conversion in the neutral-polluted soil and in the non-contaminated soil amended with different pig slurry dosages (75, 150 and 225mg NH(4)(+)-N kg(-1) of soil). Low rates of nitrification and N-immobilisation were found in the acidic soil. Pig slurry addition to metal polluted soils enhanced soil nitrification, especially when metals were in low-solubility forms.", "keywords": ["[SDE] Environmental Sciences", "2. Zero hunger", "PIG SLURRY RECYCLING", "SOIL RECLAMATION", "Nitrogen", "Swine", "METAL SOLUBILITY", "04 agricultural and veterinary sciences", "Hydrogen-Ion Concentration", "15. Life on land", "NITRIFICATION", "6. Clean water", "12. Responsible consumption", "Manure", "Quaternary Ammonium Compounds", "MICROBIAL IMMOBILISATION", "Biodegradation", " Environmental", "13. Climate action", "METAL", "Metals", " Heavy", "Animals", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2010.08.026"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2010.08.026", "name": "item", "description": "10.1016/j.chemosphere.2010.08.026", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2010.08.026"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-10-01T00:00:00Z"}}, {"id": "10.1016/j.ijfoodmicro.2021.109043", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:45Z", "type": "Journal Article", "created": "2021-01-08", "title": "Unraveling the emergence and population diversity of Listeria monocytogenes in a newly built meat facility through whole genome sequencing", "description": "The food processing environments of a newly opened meat processing facility were sampled in ten visits carried out during its first 1.5\u00a0years of activity and analyzed for the presence of Listeria monocytogenes. A total of 18 L. monocytogenes isolates were obtained from 229 samples, and their genomes were sequenced to perform comparative genomic analyses. An increase in the frequency of isolation of L. monocytogenes and in the diversity of sequence types (STs) detected was observed along time. Although the strains isolated belonged to six different STs (ST8, ST9, ST14, ST37, ST121 and ST155), ST9 was the most abundant (8 out of 18 strains). Low (0 and 2) single nucleotide polymorphism (SNP) distances were found between two pairs of ST9 strains isolated in both cases 3\u00a0months apart from the same processing room (Lm-1267 and Lm-1705, with a 2 SNPs distance in the core genome; Lm-1265 and Lm-1706, with a 0 SNPs distance), which suggests that these strains may be persistent L. monocytogenes strains in the food processing environment. Most strains showed an in silico attenuated virulence potential either through the truncation of InlA (in 67% of the isolates) or the absence of other virulence factors involved in cell adhesion or invasion. Twelve of the eighteen L. monocytogenes isolates contained a plasmid, which ranged in size from 4 to 87 Kb and harbored stress survival, in addition to heavy metals and biocides resistance determinants. Identical or highly similar plasmids were identified for various sets of L. monocytogenes ST9 isolates, which suggests the clonal expansion and persistence of plasmid-containing ST9 strains in the processing environments of the meat facility. Finally, the analysis of the L. monocytogenes genomes available in the NCBI database, and their associated metadata, evidenced that strains from ST9 are more frequently reported in Europe, linked to foods, particularly to meat and pork products, and less represented among clinical isolates than other L. monocytogenes STs. It also showed that the ST9 strains here isolated were more closely related to the European isolates, which clustered together and separated from ST9 North American isolates.", "keywords": ["0301 basic medicine", "Meat", "Food Handling", "Swine", "Virulence Factors", "Tecnolog\u00eda de los alimentos", "Food processing environment", "Persistence", "03 medical and health sciences", "Manufacturing and Industrial Facilities", "Floors and Floorcoverings", "Animals", "2. Zero hunger", "0303 health sciences", "Virulence", "Whole Genome Sequencing", "Genetic Variation", "Gen\u00e9tica", "Listeria monocytogenes", "Europe", "Genes", " Bacterial", "Whole genome sequencing", "Food Microbiology", "Equipment Contamination", "Disinfectants", "Plasmids"]}, "links": [{"href": "https://doi.org/10.1016/j.ijfoodmicro.2021.109043"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Food%20Microbiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ijfoodmicro.2021.109043", "name": "item", "description": "10.1016/j.ijfoodmicro.2021.109043", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ijfoodmicro.2021.109043"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2014.05.019", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:59Z", "type": "Journal Article", "created": "2014-05-24", "title": "Soil Microbial Properties After Long-Term Swine Slurry Application To Conventional And No-Tillage Systems In Brazil", "description": "Swine waste can be used as an agricultural fertilizer, but large amounts may accumulate excess nutrients in soil or contaminate the surrounding environment. This study evaluated long-term soil amendment (15 years) with different levels of swine slurry to conventional (plow) tillage (CT) and no tillage (NT) soils. Long-term swine slurry application did not affect soil organic carbon. Some chemical properties, such as calcium, base saturation, and aluminum saturation were significantly different within and between tillages for various application rates. Available P and microbial parameters were significantly affected by slurry addition. Depending on tillage, soil microbial biomass and enzyme activity increased up to 120 m(3) ha(-1) year(-1) in all application rates. The NT system had higher microbial biomass and activity than CT at all application levels. There was an inverse relationship between the metabolic quotient (qCO2) and MBC, and the qCO2 was 53% lower in NT than CT. Swine slurry increased overall acid phosphatase activity, but the phosphatase produced per unit of microbial biomass decreased. A comparison of data obtained in the 3rd and 15th years of swine slurry application indicated that despite slurry application the CT system degraded with time while the NT system had improved values of soil quality indicators. For these Brazilian oxisols, swine slurry amendment was insufficient to maintain soil quality parameters in annual crop production without additional changes in tillage management.", "keywords": ["2. Zero hunger", "Swine", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Waste Disposal", " Fluid", "6. Clean water", "Soil", "Animals", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Brazil", "Soil Microbiology", "Environmental Monitoring"], "contacts": [{"organization": "Elcio L. Balota, Oswaldo Machineski, Karima I.A. Hamid, Ines F.U. Yada, Graziela M.C. Barbosa, Andre S. Nakatani, Mark S. Coyne,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2014.05.019"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2014.05.019", "name": "item", "description": "10.1016/j.scitotenv.2014.05.019", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2014.05.019"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-08-01T00:00:00Z"}}, {"id": "10.1186/s40168-020-00941-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:17:58Z", "type": "Journal Article", "created": "2020-11-19", "title": "Antimicrobial use and production system shape the fecal, environmental, and slurry resistomes of pig farms", "description": "Abstract BackgroundThe global threat of antimicrobial resistance (AMR) is a One Health problem impacted by antimicrobial use (AMU) for human and livestock applications. Extensive Iberian swine production is based on a more sustainable and eco-friendly management system, providing an excellent opportunity to evaluate how sustained differences in AMU impact the resistome, not only in the animals but also on the farm environment. Here, we evaluate the resistome footprint of an extensive pig farming system, maintained for decades, as compared to that of industrialized intensive pig farming by analyzing 105 fecal, environmental and slurry metagenomes from 38 farms.
ResultsOur results evidence a significantly higher abundance of antimicrobial resistance genes (ARGs) on intensive farms and a link between AMU and AMR to certain antimicrobial classes. We observed differences in the resistome across sample types, with a higher richness and dispersion of ARGs within environmental samples than on those from feces or slurry. Indeed, a deeper analysis revealed that differences among the three sample types were defined by taxa-ARGs associations. Interestingly, mobilome analyses revealed that the observed AMR differences between intensive and extensive farms could be linked to differences in the abundance of mobile genetic elements (MGEs). Thus, while there were no differences in the abundance of chromosomal-associated ARGs between intensive and extensive herds, a significantly higher abundance of integrons in the environment and plasmids, regardless of the sample type, was detected on intensive farms.
ConclusionsOverall, this study shows how AMU, production system, and sample type influence, mainly through MGEs, the profile and dispersion of ARGs in pig production.
", "keywords": ["0301 basic medicine", "Farms", "Sanidad animal", "Swine", "Antimicrobial resistance", "Microbial ecology", "Sustainable farming", "Cerdos", "Feces", "03 medical and health sciences", "Anti-Infective Agents", "Environmental Microbiology", "Animals", "Mobilome", "Antiinfecciosos", "One health", "2. Zero hunger", "Excrementos", "0303 health sciences", "Research", "QR100-130", "Drug Resistance", " Microbial", "15. Life on land", "Farm environment", "6. Clean water", "Genes", " Bacterial", "Animals", " Domestic", "2401.05 desarrollo Animal", "Metagenome", "Veterinaria"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1186/s40168-020-00941-7.pdf"}, {"href": "https://doi.org/10.1186/s40168-020-00941-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microbiome", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1186/s40168-020-00941-7", "name": "item", "description": "10.1186/s40168-020-00941-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1186/s40168-020-00941-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-11-19T00:00:00Z"}}, {"id": "10.1186/s40168-021-01131-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:17:58Z", "type": "Journal Article", "created": "2021-10-14", "title": "Microbial colonization and resistome dynamics in food processing environments of a newly opened pork cutting industry during 1.5 years of activity", "description": "AbstractBackgroundThe microorganisms that inhabit food processing environments (FPE) can strongly influence the associated food quality and safety. In particular, the possibility that FPE may act as a reservoir of antibiotic-resistant microorganisms, and a hotspot for the transmission of antibiotic resistance genes (ARGs) is a concern in meat processing plants. Here, we monitor microbial succession and resistome dynamics relating to FPE through a detailed analysis of a newly opened pork cutting plant over 1.5 years of activity.
ResultsWe identified a relatively restricted principal microbiota dominated byPseudomonasduring the first 2 months, while a higher taxonomic diversity, an increased representation of other taxa (e.g.,Acinetobacter,Psychrobacter), and a certain degree of microbiome specialization on different surfaces was recorded later on. An increase in total abundance, alpha diversity, and \uffce\uffb2-dispersion of ARGs, which were predominantly assigned toAcinetobacterand associated with resistance to certain antimicrobials frequently used on pig farms of the region, was detected over time. Moreover, a sharp increase in the occurrence of extended-spectrum \uffce\uffb2-lactamase-producingEnterobacteriaceaeand vancomycin-resistantEnterococcaceaewas observed when cutting activities started. ARGs associated with resistance to \uffce\uffb2-lactams, tetracyclines, aminoglycosides, and sulphonamides frequently co-occurred, and mobile genetic elements (i.e., plasmids, integrons) and lateral gene transfer events were mainly detected at the later sampling times in drains.
ConclusionsThe observations made suggest that pig carcasses were a source of resistant bacteria that then colonized FPE and that drains, together with some food-contact surfaces, such as equipment and table surfaces, represented a reservoir for the spread of ARGs in the meat processing facility.
", "keywords": ["0301 basic medicine", "2. Zero hunger", "0303 health sciences", "Bacteria", "Food Handling", "Swine", "Tecnolog\u00eda de los alimentos", "Research", "QR100-130", "610", "Food processing environments", "Antimicrobial resistance", "Gen\u00e9tica", "630", "Anti-Bacterial Agents", "Microbial ecology", "Red Meat", "03 medical and health sciences", "Genes", " Bacterial", "Pork Meat", "Animals", "Metagenomics"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1186/s40168-021-01131-9.pdf"}, {"href": "https://doi.org/10.1186/s40168-021-01131-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microbiome", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1186/s40168-021-01131-9", "name": "item", "description": "10.1186/s40168-021-01131-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1186/s40168-021-01131-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-10-14T00:00:00Z"}}, {"id": "10.1371/journal.pone.0108594", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:05Z", "type": "Journal Article", "created": "2014-09-29", "title": "Carbon Sequestration Efficiency Of Organic Amendments In A Long-Term Experiment On A Vertisol In Huang-Huai-Hai Plain, China", "description": "Soil organic carbon (SOC) sequestration is important for improving soil fertility of cropland and for the mitigation of greenhouse gas emissions to the atmosphere. The efficiency of SOC sequestration depends on the quantity and quality of the organic matter, soil type, and climate. Little is known about the SOC sequestration efficiency of organic amendments in Vertisols. Thus, we conducted the research based on 29 years (1982-2011) of long-term fertilization experiment with a no fertilizer control and five fertilization regimes: CK (control, no fertilizer), NPK (mineral NPK fertilizers alone), NPK+1/2W (mineral NPK fertilizers combined with half the amount of wheat straw), NPK+W (mineral NPK fertilizers combined with full the amount of wheat straw), NPK+PM (mineral NPK fertilizers combined with pig manure) and NPK+CM (mineral NPK fertilizers combined cattle manure). Total mean annual C inputs were 0.45, 1.55, 2.66, 3.71, 4.68 and 6.56 ton/ha/yr for CK, NPK, NPKW1/2, NPKW, NPKPM and NPKCM, respectively. Mean SOC sequestration rate was 0.20 ton/ha/yr in the NPK treatment, and 0.39, 0.50, 0.51 and 0.97 ton/ha/yr in the NPKW1/2, NPKW, NPKPM, and NPKCM treatments, respectively. A linear relationship was observed between annual C input and SOC sequestration rate (SOCsequestration rate \u200a=\u200a0.16 Cinput -0.10, R\u200a=\u200a0.95, P<0.01), suggesting a C sequestration efficiency of 16%. The Vertisol required an annual C input of 0.63 ton/ha/yr to maintain the initial SOC level. Moreover, the C sequestration efficiencies of wheat straw, pig manure and cattle manure were 17%, 11% and 17%, respectively. The results indicate that the Vertisol has a large potential to sequester SOC with a high efficiency, and applying cattle manure or wheat straw is a recommendable SOC sequestration practice in Vertisols.", "keywords": ["Carbon Sequestration", "China", "Glycine max", "Nitrogen", "Swine", "Science", "12. Responsible consumption", "Soil", "11. Sustainability", "Animals", "Fertilizers", "Triticum", "2. Zero hunger", "Q", "R", "Agriculture", "Phosphorus", "04 agricultural and veterinary sciences", "15. Life on land", "Carbon", "6. Clean water", "Manure", "13. Climate action", "Potassium", "Medicine", "0401 agriculture", " forestry", " and fisheries", "Cattle", "Research Article"], "contacts": [{"organization": "Daozhong Wang, Xisheng Guo, Zibin Guo, Keke Hua,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1371/journal.pone.0108594"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/PLoS%20ONE", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1371/journal.pone.0108594", "name": "item", "description": "10.1371/journal.pone.0108594", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371/journal.pone.0108594"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-09-29T00:00:00Z"}}, {"id": "10.1590/s0100-204x2010000500011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:16Z", "type": "Journal Article", "created": "2010-08-04", "title": "Soil Carbon And Nitrogen Mineralization Caused By Pig Slurry Application Under Different Soil Tillage Systems", "description": "The objective of this work was to evaluate the change in soil C and N mineralization due to successive pig slurry application under conventional tillage (CT) and no tillage (NT) systems. The experiment was carried out in a clayey Latossolo Vermelho eutr\uffc3\uffb3fico (Rhodic Eutrudox) in Palotina, PR, Brazil. Increasing doses of pig slurry (0, 30, 60 and 120 m\uffc2\uffb3 ha-1 per year) were applied in both tillage systems, with three replicates. Half of the pig slurry was applied before summer soil preparation, and the other half before the winter crop season. The areas were cultivated with soybean (Glycine max L.) and maize (Zea mays L.) in the summers of 1998 and 1999, respectively, and with wheat (Triticum sativum Lam.) in the winters of both years. Soil samples were collected at 0-5, 5-10, and 10-20 cm depths. Under both CT and NT systems, pig slurry application increased C and N mineralization. However, increasing pig slurry additions decreased the C to N mineralization ratio. Under the NT system, C and N mineralization was greater than in CT system.
", "keywords": ["potential mineralization", "plantio convencional", "plantio direto", "no tillage", "swine manure", "potencial de mineraliza\u00e7\u00e3o", "conventional tillage", "0401 agriculture", " forestry", " and fisheries", "res\u00edduos de su\u00ednos", "nutrient cycling", "ciclagem de nutrientes", "04 agricultural and veterinary sciences"], "contacts": [{"organization": "Balota, Elcio Liborio, Machineski, Oswaldo, Truber, Priscila Viviane,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1590/s0100-204x2010000500011"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Pesquisa%20Agropecu%C3%A1ria%20Brasileira", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0100-204x2010000500011", "name": "item", "description": "10.1590/s0100-204x2010000500011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0100-204x2010000500011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-05-01T00:00:00Z"}}, {"id": "10.1590/s1415-43662012000500004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:16Z", "type": "Journal Article", "created": "2012-04-28", "title": "Soil Microbial Biomass Under Different Tillage And Levels Of Applied Pig Slurry", "description": "ABSTRACT The objective of this work was to evaluate the changes in microbial biomass C, N and P due to the application of pig slurry under different soil tillage systems. The experiment was established in a clayey Oxisol, Eutrophic Red Latossol in Palotina, PR. Different quantities of pig slurry (0, 30, 60 and 120 m3 ha-1 year-1) were applied to the soil prior to the summer and winter crop season under conventional tillage (CT) and no tillage (NT), in three replicates. The area was cultivated with soybean (Glycine max L.) or maize (Zea mays L.) in the summer and wheat (Triticum sativum Lam.) or oat (Avena sativa L.) in the winter. The soil samples were collected in March and October of 1998 and 1999 at depths of 0-5, 5-10 and 10-20 cm. The soil tillage and pig slurry application influenced the microbial biomass C, N and P. The microbial biomass and the microbial activity presented high sensibility to detect changes in the soil due to tillage and the application of pig slurry. The soil microbial biomass and Cmic/Corg relation increased as the quantity of applied pig slurry increased. The metabolic quotient under CT increased with depth while under NT it decreased. The soil microbial biomass was enriched in N and P under NT and as the quantity of applied pig slurry increased.
", "keywords": ["2. Zero hunger", "plantio direto", "swine manure", "res\u00c3duos de su\u00c3nos", "0401 agriculture", " forestry", " and fisheries", "nutrient cycling", "ciclagem de nutrientes", "04 agricultural and veterinary sciences", "15. Life on land", "soil management", "microbial activity", "6. Clean water", "atividade microbiana"], "contacts": [{"organization": "Balota, Elcio L., Machineski, Oswaldo, Matos, Maria A.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1590/s1415-43662012000500004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Revista%20Brasileira%20de%20Engenharia%20Agr%C3%ADcola%20e%20Ambiental", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s1415-43662012000500004", "name": "item", "description": "10.1590/s1415-43662012000500004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s1415-43662012000500004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-05-01T00:00:00Z"}}, {"id": "10.2134/jeq2004.2290", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:32Z", "type": "Journal Article", "created": "2010-06-14", "title": "Pig Slurry Application And Irrigation Effects On Nitrate Leaching In Mediterranean Soil Lysimeters", "description": "ABSTRACTLand application of animal manures, such as pig slurry (PS), is a common practice in intensive\uffe2\uff80\uff90farming agriculture. However, this practice has a pitfall consisting of the loss of nutrients, in particular nitrate, toward water courses. The objective of this study was to evaluate nitrate leaching for three application rates of pig slurry (50, 100, and 200 Mg ha\uffe2\uff88\uff921) and a control treatment of mineral fertilizer (275 kg N ha\uffe2\uff88\uff921) applied to corn grown in 10 drainage lysimeters. The effects of two irrigation regimes (low vs. high irrigation efficiency) were also analyzed. In the first two irrigation events, drainage NO3\uffe2\uff80\uff93N concentrations as high as 145 and 69 mg L\uffe2\uff88\uff921 were measured in the high and moderate PS rate treatments, respectively, in the low irrigation efficiency treatments. This indicates the fast transformation of the PS ammonium into nitrate and the subsequent leaching of the transformed nitrate. Drainage NO3\uffe2\uff80\uff93N concentration and load increased linearly by 0.69 mg NO3\uffe2\uff80\uff93N L\uffe2\uff88\uff921 and 4.6 kg NO3\uffe2\uff80\uff93N ha\uffe2\uff88\uff921, respectively, for each 10 kg N ha\uffe2\uff88\uff921 applied over the minimum of 275 kg N ha\uffe2\uff88\uff921 An increase in irrigation efficiency did not induce a significant increase of leachate concentration and the amount of nitrate leached decreased about 65%. Application of low PS doses before sowing complemented with sidedressing N application and a good irrigation management are the key factors to reduce nitrate contamination of water courses.
", "keywords": ["2. Zero hunger", "Nitrates", "Mediterranean Region", "Swine", "Agriculture", "04 agricultural and veterinary sciences", "01 natural sciences", "6. Clean water", "Manure", "Solubility", "Water Supply", "Animals", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Water Pollutants", "Fertilizers", "0105 earth and related environmental sciences"], "contacts": [{"organization": "A. Daud\u00e9n, D. Qu\u00edlez, M. V. Vera,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2134/jeq2004.2290"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2004.2290", "name": "item", "description": "10.2134/jeq2004.2290", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2004.2290"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-11-01T00:00:00Z"}}, {"id": "10.2134/jeq2007.0427", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-20T16:18:33Z", "type": "Journal Article", "created": "2008-06-24", "title": "Greenhouse Gas Emissions From Two Soils Receiving Nitrogen Fertilizer And Swine Manure Slurry", "description": "AbstractThe interactive effects of soil texture and type of N fertility (i.e., manure vs. commercial N fertilizer) on N2O and CH4 emissions have not been well established. This study was conducted to assess the impact of soil type and N fertility on greenhouse gas fluxes (N2O, CH4, and CO2) from the soil surface. The soils used were a sandy loam (789 g kg\uffe2\uff88\uff921 sand and 138 g kg\uffe2\uff88\uff921 clay) and a clay soil (216 g kg\uffe2\uff88\uff921 sand, and 415 g kg\uffe2\uff88\uff921 clay). Chamber experiments were conducted using plastic buckets as the experimental units. The treatments applied to each soil type were: (i) control (no added N), (ii) urea\uffe2\uff80\uff90ammonium nitrate (UAN), and (iii) liquid swine manure slurry. Greenhouse gas fluxes were measured over 8 weeks. Within the UAN and swine manure treatments both N2O and CH4 emissions were greater in the sandy loam than in the clay soil. In the sandy loam soil N2O emissions were significantly different among all N treatments, but in the clay soil only the manure treatment had significantly higher N2O emissions. It is thought that the major differences between the two soils controlling both N2O and CH4 emissions were cation exchange capacity (CEC) and percent water\uffe2\uff80\uff90filled pore space (%WFPS). We speculate that the higher CEC in the clay soil reduced N availability through increased adsorption of NH4+ compared to the sandy loam soil. In addition the higher average %WFPS in the sandy loam may have favored higher denitrification and CH4 production than in the clay soil.
", "keywords": ["Greenhouse Effect", "2. Zero hunger", "Nitrogen", "Swine", "04 agricultural and veterinary sciences", "630", "6. Clean water", "12. Responsible consumption", "Manure", "Soil", "13. Climate action", "11. Sustainability", "Animals", "0401 agriculture", " forestry", " and fisheries", "Gases", "Fertilizers"], "contacts": [{"organization": "Jarecki, Marek K., Parkin, Timothy B., Chan, Alvarus S. K., Hatfield, Jerry L., Jones, Raymond,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2134/jeq2007.0427"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2007.0427", "name": "item", "description": "10.2134/jeq2007.0427", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2007.0427"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-01T00:00:00Z"}}, {"id": "10.2134/jeq2009.0482", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-09-20T16:18:33Z", "type": "Journal Article", "created": "2010-08-24", "title": "Soil Nitrous Oxide Emissions Following Band-Incorporation Of Fertilizer Nitrogen And Swine Manure", "description": "Treatment of liquid swine manure (LSM) offers opportunities to improve manure nutrient management. However, N2O fluxes and cumulative emissions resulting from application of treated LSM are not well documented. Nitrous oxide emissions were monitored following band\uffe2\uff80\uff90incorporation of 100 kg N ha\uffe2\uff88\uff921 of either mineral fertilizer, raw LSM, or four pretreated LSMs (anaerobic digestion; anaerobic digestion + flocculation; filtration; decantation) at the four\uffe2\uff80\uff90leaf stage of corn (Zea mays L.). In a clay soil, a larger proportion of applied N was lost as N2O with the mineral fertilizer (average of 6.6%) than with LSMs (3.1\uffe2\uff80\uff935.0%), whereas in a loam soil, the proportion of applied N lost as N2O was lower with the mineral fertilizer (average of 0.4%) than with LSMs (1.2\uffe2\uff80\uff932.4%). Emissions were related to soil NO3 intensity in the clay soil, whereas they were related to water\uffe2\uff80\uff90extractable organic C in the loam soil. This suggests that N2O production was N limited in the clay soil and C limited in the loam soil, and would explain the interaction found between N sources and soil type. The large N2O emission coefficients measured in many treatments, and the contradicting responses among N sources depending on soil type, indicate that (i) the Intergovernmental Panel on Climate Change (IPCC) default value (1%) may seriously underestimate N2O emissions from fine\uffe2\uff80\uff90textured soils where fertilizer N and manure are band\uffe2\uff80\uff90incorporated, and (ii) site\uffe2\uff80\uff90specific factors, such as drainage conditions and soil properties (e.g., texture, organic matter content), have a differential influence on emissions depending on N source.
", "keywords": ["Manure", "2. Zero hunger", "Soil", "Nitrogen", "Swine", "13. Climate action", "Nitrous Oxide", "Animals", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Fertilizers", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.2134/jeq2009.0482"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2009.0482", "name": "item", "description": "10.2134/jeq2009.0482", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2009.0482"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-09-01T00:00:00Z"}}, {"id": "10.2134/jeq2012.0352", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:34Z", "type": "Journal Article", "created": "2013-03-18", "title": "Biochar From Swine Solids And Digestate Influence Nutrient Dynamics And Carbon Dioxide Release In Soil", "description": "Large amounts of livestock manure solids are expected to become available in the near future due to the development of technologies for the separation of the solid fraction of animal effluents. The charring of manure solids for biochar (BC) production represents an opportunity for recycling organic matter (OM) of high nutrient value. The objectives of this study were to evaluate the suitability of BC from swine solids (SS) to improve soil fertility through nutrient supply and decomposition of the OM incorporated into soil and to verify a possible interaction effect on soil nutrient dynamics between digestate application and soil amendment with BC. We monitored at laboratory scale the soil mineral nitrogen (N) and Olsen phosphorus (P) content, and the cumulative carbon dioxide (CO-C) release in treatments with or without a supply of digestate obtained from a biogas plant. The experiment was performed in laboratory microcosms during a 3-mo incubation period. Compared treatments were soil amendments with SS, BC from SS, wood chip, BC from wood chip, and soil with no amendment, each of them with and without incorporation of digestate (10 treatments in total). Soil N levels were unaffected by BC amendments and only increased temporarily when digestate was applied to soil amended with SS or BC from SS. For the same N content, the BC from SS supplied much more P than the nontreated OM. The amount of cumulative CO-C released from soil with BC with or without digestate did not differ from that in the unamended control soil and was lower than that in the soils with noncharred amendments. Soil amendment with BC from SS does not modify soil N availability, whereas it increases the content of P available for crops and reduces the release of CO-C from digestate applied to soil for agricultural purposes.", "keywords": ["Manure", "2. Zero hunger", "Soil", "Nitrogen", "Swine", "Animals", "0401 agriculture", " forestry", " and fisheries", "Agriculture", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "6. Clean water"], "contacts": [{"organization": "Rosa Marchetti, Fabio Castelli,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2134/jeq2012.0352"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2012.0352", "name": "item", "description": "10.2134/jeq2012.0352", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2012.0352"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-05-01T00:00:00Z"}}, {"id": "2997807425", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:22:38Z", "type": "Journal Article", "created": "2020-01-02", "title": "Effects of copper salts on performance, antibiotic resistance genes, and microbial community during thermophilic anaerobic digestion of swine manure", "description": "This study investigated methane production and ARGs reduction during thermophilic AD of swine manure with the addition of different Cu salts (cupric sulfate, cupric glycinate, and the 1:1 mixture of these two salts). Results showed methane production was increased by 28.78% through adding mixed Cu salts. The mixed Cu group effectively reduced total ARGs abundance by 26.94%, suggesting mixed Cu salts did not promote the potential ARGs risk. The positive effects of mixed Cu salts on AD performance and ARGs removal might be ascribed to the low bioavailability. Microbial community analysis indicated the highest abundances of Clostridia_MBA03 and Methanobacterium in the mixed Cu group might cause the increased methane production. Spearman's rank correlation analysis elucidated the succession in microbial community induced by environmental factors was the main driver for shaping ARGs profiles. Thus, mixed Cu salts could be an alternative to replace the inorganic Cu salt in animal feed additives.", "keywords": ["Manure", "Genes", " Bacterial", "Swine", "Microbiota", "Animals", "Drug Resistance", " Microbial", "Anaerobiosis", "01 natural sciences", "Copper", "6. Clean water", "Anti-Bacterial Agents", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2997807425"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2997807425", "name": "item", "description": "2997807425", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2997807425"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-01T00:00:00Z"}}, {"id": "31926471", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:22:51Z", "type": "Journal Article", "created": "2020-01-02", "title": "Effects of copper salts on performance, antibiotic resistance genes, and microbial community during thermophilic anaerobic digestion of swine manure", "description": "This study investigated methane production and ARGs reduction during thermophilic AD of swine manure with the addition of different Cu salts (cupric sulfate, cupric glycinate, and the 1:1 mixture of these two salts). Results showed methane production was increased by 28.78% through adding mixed Cu salts. The mixed Cu group effectively reduced total ARGs abundance by 26.94%, suggesting mixed Cu salts did not promote the potential ARGs risk. The positive effects of mixed Cu salts on AD performance and ARGs removal might be ascribed to the low bioavailability. Microbial community analysis indicated the highest abundances of Clostridia_MBA03 and Methanobacterium in the mixed Cu group might cause the increased methane production. Spearman's rank correlation analysis elucidated the succession in microbial community induced by environmental factors was the main driver for shaping ARGs profiles. Thus, mixed Cu salts could be an alternative to replace the inorganic Cu salt in animal feed additives.", "keywords": ["Manure", "Genes", " Bacterial", "Swine", "Microbiota", "Animals", "Drug Resistance", " Microbial", "Anaerobiosis", "01 natural sciences", "Copper", "6. Clean water", "Anti-Bacterial Agents", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/31926471"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "31926471", "name": "item", "description": "31926471", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/31926471"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Swine&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Swine&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Swine&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Swine&offset=20", "hreflang": "en-US"}], "numberMatched": 20, "numberReturned": 20, "distributedFeatures": [], "timeStamp": "2026-09-21T07:45:24.860255Z"}