{"type": "FeatureCollection", "features": [{"id": "10.1007/s00374-009-0370-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-16T16:14:26Z", "type": "Journal Article", "created": "2009-03-25", "title": "Soil Biological Quality Of Grassland Fertilized With Adjusted Cattle Manure Slurries In Comparison With Organic And Inorganic Fertilizers", "description": "We studied the effect of five fertilizers (including two adjusted manure slurries) and an untreated control on soil biota and explored the effect on the ecosystem services they provided. Our results suggest that the available N (NO                   3                   \u2212                  and NH                   4                   +                 ) in the soil plays a central role in the effect of fertilizers on nematodes and microorganisms. Microorganisms are affected directly through nutrient availability and indirectly through grass root mass. Nematodes are affected indirectly through microbial biomass and grass root mass. A lower amount of available N in the treatment with inorganic fertilizer was linked to a higher root mass and a higher abundance and proportion of herbivorous nematodes. A higher amount of available N in the organic fertilizer treatments resulted in a twofold higher bacterial activity (measured as bacterial growth rate, viz. thymidine incorporation), a higher proportion of bacterivorous nematodes, a 30% higher potential N mineralization (aerobic incubation), and 25\u201350% more potentially mineralizable N (anaerobic incubation). Compared to inorganic fertilizer, organic fertilization increased the C total, the N total, the activity of decomposers, and the supply of nutrients via the soil food web. Within the group of organic fertilizers, there was no significant difference in C total, abundances of soil biota, and the potential N mineralization rate. There were no indications that farmyard manure or the adjusted manure slurries provided the ecosystem service \u201csupply of nutrients\u201d better than normal manure slurry. Normal manure slurry provided the highest bacterial activity and the highest amount of mineralizable N and it was the only fertilizer resulting in a positive trend in grass yield over the years\u00a02000\u20132005. The number of earthworm burrows was higher in the treatments with organic fertilizers compared to the one with the inorganic fertilizer, which suggests that organic fertilizers stimulate the ecosystem service of water regulation more than inorganic fertilizer. The trend towards higher epigeic earthworm numbers with application of farmyard manure and one of the adjusted manure slurries, combined with the negative relation between epigeic earthworms and bulk density and a significantly lower penetration resistance in the same fertilizer types, is preliminary evidence that these two organic fertilizer types contribute more to the service of soil structure maintenance than inorganic fertilizer.", "keywords": ["2. Zero hunger", "nitrogenous fertilizers", "dynamics", "04 agricultural and veterinary sciences", "15. Life on land", "pig slurry", "6. Clean water", "earthworms oligochaeta", "13. Climate action", "nematodes", "0401 agriculture", " forestry", " and fisheries", "mineralization", "microorganisms", "term", "management", "biodiversity"]}, "links": [{"href": "https://doi.org/10.1007/s00374-009-0370-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biology%20and%20Fertility%20of%20Soils", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00374-009-0370-2", "name": "item", "description": "10.1007/s00374-009-0370-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00374-009-0370-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-03-26T00:00:00Z"}}, {"id": "10.1016/j.agee.2006.11.020", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-16T16:15:12Z", "type": "Journal Article", "created": "2007-01-18", "title": "Nitrogen Oxide Emissions From An Irrigated Maize Crop Amended With Treated Pig Slurries And Composts In A Mediterranean Climate", "description": "Open AccessOrganic fertilizers may differ greatly in composition and as a result there may also be differences in nitrogen oxides emissions following their application to soils. The aim of this study was to evaluate the influence of mineral and organic N fertilizers on the nitrification and denitrification processes, and consequently on N2O and NO emissions. Therefore, a field experiment was carried out on an irrigated sandy loam soil under Mediterranean conditions during the maize (Zea mays L.) growing season. Untreated pig slurry (UPS) both with and without the nitrification inhibitor dicyandiamide (UPS + DCD), digested thin pig slurry fraction (DTP), composted solid fraction of slurry mixed with urea (CPS + U) and composted municipal solid waste mixed with urea (MSW + U) were applied at a rate of 175 kg available N ha 1. Their emissions were compared with those from urea (U) and a control treatment to which no nitrogen fertilization was administered (Control). Accumulated nitrous oxide losses during the crop season ranged from 6.0 to 9.3 kg N2O-N ha 1 for the Control and CPS + U, respectively, whereas nitric oxide losses ranged from 0.01 to 0.23 kg NO-N ha 1, for the Control and U, respectively. The use of digested slurries mitigated N2O emission by 25% in relation to untreated pig slurry, but NO emissions were similar for both treatments. Dicyandiamide reduced N2O and NO emissions by 64 and 78% with respect to slurry without the inhibitor. An indirect effect of DCD on denitrification was also observed, with a reduction of 32% in denitrification with respect to the slurry without the inhibitor. In this case, the greatest reduction in denitrification losses occurred during the irrigation period. Composts mixed with urea reduced NO emissions by 56% (CPS + U) and 85% (MSW + U) in relation to the urea treatment, but its effect on N2O depended on the type of compost involved: CPS + U increased N2O emission by 27%, whereas MSW + U reduced it by 55% in relation to urea. Denitrification was the most important process responsible for N2O emissions when organic fertilizers were applied to the soil, while nitrification was the most important for the inorganic fertilizer. The C:N ratio of fertilizers was a good predictor of their NO emissions, denitrification losses and N2O/N2 ratio. On the other hand, added soluble N was a good predictor for cumulative N2O emissions during the period before irrigation. This work shows that an appropriate selection of organic fertilizers based on their composition could be used to mitigate emissions of the atmospheric pollutants NO and N2O in comparison with urea.", "keywords": ["2. Zero hunger", "Nitrous oxide", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Nitric oxide", "04 agricultural and veterinary sciences", "01 natural sciences", "6. Clean water", "Pig slurry", "Organic fertilizers", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2006.11.020"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2006.11.020", "name": "item", "description": "10.1016/j.agee.2006.11.020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2006.11.020"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-08-01T00:00:00Z"}}, {"id": "10.1007/s10705-007-9091-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-16T16:14:45Z", "type": "Journal Article", "created": "2007-02-23", "title": "Effects Of Fertiliser Type And The Presence Or Absence Of Plants On Nitrous Oxide Emissions From Irrigated Soils", "description": "Open AccessPeer reviewed", "keywords": ["2. Zero hunger", "N20 emission", "Municipal solid waste", "Composts", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "12. Responsible consumption", "Denitrification losses", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Pig slurry", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10705-007-9091-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nutrient%20Cycling%20in%20Agroecosystems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10705-007-9091-9", "name": "item", "description": "10.1007/s10705-007-9091-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10705-007-9091-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-02-24T00:00:00Z"}}, {"id": "10.1016/j.biortech.2012.08.124", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-16T16:15:35Z", "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.chemosphere.2010.08.026", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-16T16:15:39Z", "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": "10.1111/j.1475-2743.2004.tb00395.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-16T16:18:38Z", "type": "Journal Article", "created": "2010-08-06", "title": "Impact Of Pig Slurry On Soil Properties, Water Salinization, Nitrate Leaching And Crop Yield In A Four-Year Experiment In Central Spain", "description": "<p>Abstract.  The repeated application of pig slurry to agricultural soils may result in an accumulation of salts and a risk of aquifer pollution due to nitrate leaching and salinization. Under Mediterranean conditions, a field experiment on a sandy loam soil (Typic Xerofluvent) was performed with maize (Zea mays) in 1998, 1999 and 2001 to study the effects of applying optimal (P1) and excessive rates (P3) of pig slurry on soil salinization, nitrate leaching and groundwater pollution. The rate of pig slurry was established considering the optimal N rate for maize in this soil (170, 162 and 176 kg N ha\uffe2\uff88\uff921 for 1998, 1999 and 2001, respectively). Pig slurry treatments were compared to an optimal N rate supplied as urea (U) and a control treatment without N fertilizer (P0). The composition of the slurries showed great variability between years. Mean NO3\uffe2\uff88\uff92 leaching losses from 1998 to 2001 were 329, 215, 173 and 78 kg N ha\uffe2\uff88\uff921 for P3, P1, U and P0 treatments, respectively. The amount of total dissolved salts (TDS) added to the soil in slurry application between 1998 and 2001 was 2019 kg TDS ha\uffe2\uff88\uff921 for the P1 treatment and 6058 kg TDS ha\uffe2\uff88\uff921 for the P3 treatment. As a consequence, the electrical conductivity (EC) of the slurry\uffe2\uff80\uff90treated soils was greater than that of the control soil. The EC correlated significantly with the sodium concentration of the soil solution. Over the entire experimental period, 2653, 2202 and 2110 kg Na ha\uffe2\uff88\uff921 entered the aquifer from the P3, P1 and P0 treatments, respectively. The P3 treatment did not significantly increase grain production in 1999 and 2001 compared with that achieved with the optimal N rate treatment (P1). This behaviour shows the importance of establishing application guidelines for pig slurry that will reduce the risk of soil and groundwater pollution.</p>", "keywords": ["2. Zero hunger", "Soil salinity", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrate", "01 natural sciences", "6. Clean water", "Maize", "13. Climate action", "Leaching", "0401 agriculture", " forestry", " and fisheries", "Aquifer pollution", "Irrigation", "Pig slurry", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/j.1475-2743.2004.tb00395.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Use%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1475-2743.2004.tb00395.x", "name": "item", "description": "10.1111/j.1475-2743.2004.tb00395.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1475-2743.2004.tb00395.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-12-01T00:00:00Z"}}, {"id": "10.3390/agriculture11090870", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-16T16:20:26Z", "type": "Journal Article", "created": "2021-09-10", "title": "Assessing Nitrogen Availability in Biobased Fertilizers: Effect of Vegetation on Mineralization Patterns", "description": "<p>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\uffe2\uff80\uff99 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 \uffc2\uffb1 0.3% and 20.6 \uffc2\uffb1 0.4% of the total applied N, respectively. The addition of CAN showed no significant net mineralization or immobilization (net N release 96 \uffc2\uffb1 6%). In the pot experiment under vegetation, all fertilized treatments caused N immobilization with a negative net N mineralization rate of \uffe2\uff88\uff9251 \uffc2\uffb1 11%, \uffe2\uff88\uff929 \uffc2\uffb1 4%, and \uffe2\uff88\uff9227 \uffc2\uffb1 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.</p>", "keywords": ["Agriculture and Food Sciences", "2. Zero hunger", "MICROBIAL TURNOVER", "REPLACEMENT VALUE", "Agriculture (General)", "ORGANIC-NITROGEN", "SOIL PROPERTIES", "04 agricultural and veterinary sciences", "incubation", "maize", "6. Clean water", "S1-972", "ROOT", "CROP YIELD", "digestate", "immobilization", "N MINERALIZATION", "0401 agriculture", " forestry", " and fisheries", "NUTRIENT AVAILABILITY", "PIG SLURRY", "MAIZE", "N dynamics"]}, "links": [{"href": "http://www.mdpi.com/2077-0472/11/9/870/pdf"}, {"href": "https://www.mdpi.com/2077-0472/11/9/870/pdf"}, {"href": "https://doi.org/10.3390/agriculture11090870"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/agriculture11090870", "name": "item", "description": "10.3390/agriculture11090870", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/agriculture11090870"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-10T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=pig+slurry&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=pig+slurry&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=pig+slurry&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=pig+slurry&offset=7", "hreflang": "en-US"}], "numberMatched": 7, "numberReturned": 7, "distributedFeatures": [], "timeStamp": "2026-04-17T08:28:48.005453Z"}