{"type": "FeatureCollection", "features": [{"id": "10.1016/j.agee.2010.12.004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:13Z", "type": "Journal Article", "created": "2011-01-27", "title": "Comparison Of Organic Versus Mineral Resource Effects On Short-Term Aggregate Carbon And Nitrogen Dynamics In A Sandy Soil Versus A Fine Textured Soil", "description": "Abstract   Aggregation and stabilization of soil organic C (SOC) and N are highly dependent on soil texture and addition of organic resources (ORs). While OR quality may influence SOC and N stabilization within aggregates, the simultaneous addition of N-fertilizers may enhance OR decomposition resulting in loss of SOC. A mesocosm study was conducted on a clayey soil at Embu and a sandy soil at Machanga in central Kenya to determine the influence of soil texture, OR quality and N-fertilizer on aggregation, SOC and N.  Tithonia diversifolia  (high quality),  Calliandra calothyrsus  (medium quality) and  Zea mays  (maize; low quality) residues, natural abundance or labeled with  15 N, were applied to soil at an equivalent rate of 4\u00a0Mg\u00a0C\u00a0ha \u22121  compared to no input control. Each treatment was fertilized with 120\u00a0kg  14 N or  15 N\u00a0ha \u22121  as (NH 2 ) 2 CO, or not fertilized. Soil samples were collected at installation of the mesocosms (start), and 8 months after installation (end). Soils were separated into different aggregate size fractions by wet sieving and macroaggregates were further fractionated to isolate microaggregates-within-macroaggregates. Total soil and aggregate fractions were analyzed for SOC and N. On average, 20% and 70% of SOC and N was in the macroaggregates in the sandy and clayey soils, respectively. There were no differences among OR quality in both soils but in the clayey soil all ORs resulted in greater SOC and N than in the control. However, proportions of OR-derived N in the macroaggregates, mostly in the microaggregates-within-macroaggregates were greater with sole applied maize in the clayey soil. The addition of N-fertilizer together with maize stover reduced soil N, macroaggregate N, and OR-derived N in the microaggregate and silt and clay fractions within macroaggregates compared to when maize was applied alone. In the sandy soil,  Calliandra  resulted in greater OR-derived N than  Tithonia  in the coarse particulate organic matter (cPOM; i.e., 5% compared to 2% of N applied). Thus, the greater polyphenol concentration in  Calliandra  likely slowed its decomposition compared to that of  Tithonia . In addition, greater proportions of N and residue-derived N in the macroaggregates were observed in the coarse POM in the sandy soil whereas in the clayey soil it was in the microaggregates-within-macroaggregates. We conclude that the preservation of OR-derived N is affected by the chemical recalcitrance of the residues in sandy soils, whereas macroaggregate protection, and not OR quality, is the major factor in clayey soils.", "keywords": ["2. Zero hunger", "soil fertility", "textura del suelo", "enmiendas org\u00e1nicas", "soil texture", "abonos nitrogenados", "04 agricultural and veterinary sciences", "fertilidad del suelo", "15. Life on land", "01 natural sciences", "6. Clean water", "unidades estructurales de suelos", "nitrogen fertilizers", "organic amendments", "0401 agriculture", " forestry", " and fisheries", "ecology", "soil structural units", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2010.12.004"}, {"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.2010.12.004", "name": "item", "description": "10.1016/j.agee.2010.12.004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2010.12.004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-03-01T00:00:00Z"}}, {"id": "10.1080/21683565.2014.917144", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:18:13Z", "type": "Journal Article", "created": "2014-05-02", "title": "Organic And Clay-Based Soil Amendments Increase Maize Yield, Total Nutrient Uptake, And Soil Properties In Lao Pdr", "description": "In the Lao People\u2019s Democratic Republic (PDR), increasing food security remains a challenge since smallholder agricultural systems, which are the main source of food production, are under serious threat due to poor soil fertility and climate variability. This study was undertaken in Lao PDR to investigate the impacts of organic and clay-based soil amendments on maize yield, total nutrient uptake, and soil properties. Structured field experiments were established over two consecutive years (2011 and 2012) with maize as the test crop at the Veunkham and Naphok sites. Ten treatments were applied in a randomized complete block design with three replications. The treatments were control, rice husk biochar (applied at a rate of 10 t ha\u22121), bentonite clay (10 t ha\u22121), compost (4 t ha\u22121), clay-manure compost (10 t ha\u22121), rice husk biochar compost (10 t ha\u22121), and their combinations. All treatments were applied in 2011. Significant (p < 0.05) treatment effects in maize grain yields, total nutrient uptake, and soil...", "keywords": ["2. Zero hunger", "bentonite", "land degradation", "enmiendas org\u00e1nicas", "rice husks", "bentonita", "cascarilla de arroz", "04 agricultural and veterinary sciences", "15. Life on land", "organic amendments", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "degradaci\u00f3n de tierras", "development"], "contacts": [{"organization": "Mekuria, Wolde M., Noble, A.D., Sengtaheuanghoung, Oloth, Hoanh, Chu Thai, Bossio, Deborah A., Sipaseuth, Nivong, McCartney, Matthew P., Lagan, Simon,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1080/21683565.2014.917144"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agroecology%20and%20Sustainable%20Food%20Systems", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/21683565.2014.917144", "name": "item", "description": "10.1080/21683565.2014.917144", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/21683565.2014.917144"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-08-21T00:00:00Z"}}, {"id": "10.31428/10317/11116", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:20:37Z", "type": "Journal Article", "created": "2024-02-29", "title": "Movilidad de metales en balsas mineras enmendadas con biochar y compost urbano: resultados de un bioensayo empleando una especie vegetal pionera", "description": "Open Access[SPA] El fitomanejo permite reducir el riesgo ambiental de balsas mineras abandonadas. El objetivo del trabajo fue evaluar la movilidad de metales en balsas mineras enmendadas con biochar y/o compost urbano y la efectividad de las enmiendas reduciendo la toxicidad de la soluci\u00f3n ed\u00e1fica para una planta pionera (Zygophyllum fabago). Se llev\u00f3 a cabo un experimento en mesocosmos (20 meses) con residuo minero con y sin enmienda. Los mesocosmos se mantuvieron a capacidad de campo con agua de la red y se drenaron en diferentes momentos. Se monitoriz\u00f3 la soluci\u00f3n ed\u00e1fica regularmente (pH, conductividad el\u00e9ctrica, carbono org\u00e1nico soluble \u2013COS--, nitr\u00f3geno total soluble \u2013NTS- y metales -Mn, Zn-), al igual que el drenaje. Se realiz\u00f3 un bioensayo con semillas de Z. fabago con la soluci\u00f3n ed\u00e1fica de mitad del experimento (germinaci\u00f3n de semillas, crecimiento de pl\u00e1ntulas). Los tratamientos con compost urbano mostraron mayor concentraci\u00f3n inicial de COS y metales en soluci\u00f3n. Se observ\u00f3 un descenso temporal de la concentraci\u00f3n de DOC y metales en la soluci\u00f3n ed\u00e1fica debido a su lixiviaci\u00f3n en el drenaje. A pesar del mayor contenido de metales, el compost urbano favoreci\u00f3 la elongaci\u00f3n de la ra\u00edz debido al mayor contenido de COS y NTS en soluci\u00f3n. [ENG] Phytomanagement allows to reduce the environmental risks of abandoned mine tailings. The aim of this work was to assess metal mobility in mine tailings amended with biochar and/or urban compost and the effectiveness of these amendments for reducing the toxicity of soil solution to a pioneer plant species (Zygophyllum fabago). A mesocosm experiment was performed (20 months) with mine wastes with and without amendment. Mesocosms were maintained at field capacity with tap water and drained at different times. Soil solution was regularly monitored (pH, electrical conductivity, dissolved organic carbon \u2013DOC-, dissolved total nitrogen \u2013TDN- and metals -Mn, Zn-), as well as drainage. A bioassay with seeds of Z. fabago was performed with midterm soil solution (seed germination, seedling performance). Treatments containing urban compost showed higher initial DOC and metal concentrations in solution. A decrease of DOC and metal concentrations in soil solution with time occurred due to their lixiviation in the drainage water. In spite of the higher metal pool, urban compost favoured root length due to its greater content of DOC and TDN in soil solution.", "keywords": ["Enmiendas org\u00e1nicas", "WiA", "Metal availability", "Soil contamination", "Contaminaci\u00f3n del suelo", "11. Sustainability", "Impactos de la miner\u00eda", "Organic amendment", "Disponibilidad de metales", "Tecnolog\u00eda de los Alimentos", "15. Life on land", "Mining impacts"], "contacts": [{"organization": "Mart\u00ednez Or\u00f3, D., P\u00e1rraga Aguado, Isabel Mar\u00eda, Gonz\u00e1lez Alcaraz, Mar\u00eda Nazaret, Conesa Alcaraz, H\u00e9ctor Miguel,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.31428/10317/11116"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%207th%20Workshop%20on%20Agri-Food%20research.%20WiA", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.31428/10317/11116", "name": "item", "description": "10.31428/10317/11116", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.31428/10317/11116"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-02-29T00:00:00Z"}}, {"id": "10317/11116", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:24:36Z", "type": "Journal Article", "created": "2024-02-29", "title": "Movilidad de metales en balsas mineras enmendadas con biochar y compost urbano: resultados de un bioensayo empleando una especie vegetal pionera", "description": "Open Access[SPA] El fitomanejo permite reducir el riesgo ambiental de balsas mineras abandonadas. El objetivo del trabajo fue evaluar la movilidad de metales en balsas mineras enmendadas con biochar y/o compost urbano y la efectividad de las enmiendas reduciendo la toxicidad de la soluci\u00f3n ed\u00e1fica para una planta pionera (Zygophyllum fabago). Se llev\u00f3 a cabo un experimento en mesocosmos (20 meses) con residuo minero con y sin enmienda. Los mesocosmos se mantuvieron a capacidad de campo con agua de la red y se drenaron en diferentes momentos. Se monitoriz\u00f3 la soluci\u00f3n ed\u00e1fica regularmente (pH, conductividad el\u00e9ctrica, carbono org\u00e1nico soluble \u2013COS--, nitr\u00f3geno total soluble \u2013NTS- y metales -Mn, Zn-), al igual que el drenaje. Se realiz\u00f3 un bioensayo con semillas de Z. fabago con la soluci\u00f3n ed\u00e1fica de mitad del experimento (germinaci\u00f3n de semillas, crecimiento de pl\u00e1ntulas). Los tratamientos con compost urbano mostraron mayor concentraci\u00f3n inicial de COS y metales en soluci\u00f3n. Se observ\u00f3 un descenso temporal de la concentraci\u00f3n de DOC y metales en la soluci\u00f3n ed\u00e1fica debido a su lixiviaci\u00f3n en el drenaje. A pesar del mayor contenido de metales, el compost urbano favoreci\u00f3 la elongaci\u00f3n de la ra\u00edz debido al mayor contenido de COS y NTS en soluci\u00f3n. [ENG] Phytomanagement allows to reduce the environmental risks of abandoned mine tailings. The aim of this work was to assess metal mobility in mine tailings amended with biochar and/or urban compost and the effectiveness of these amendments for reducing the toxicity of soil solution to a pioneer plant species (Zygophyllum fabago). A mesocosm experiment was performed (20 months) with mine wastes with and without amendment. Mesocosms were maintained at field capacity with tap water and drained at different times. Soil solution was regularly monitored (pH, electrical conductivity, dissolved organic carbon \u2013DOC-, dissolved total nitrogen \u2013TDN- and metals -Mn, Zn-), as well as drainage. A bioassay with seeds of Z. fabago was performed with midterm soil solution (seed germination, seedling performance). Treatments containing urban compost showed higher initial DOC and metal concentrations in solution. A decrease of DOC and metal concentrations in soil solution with time occurred due to their lixiviation in the drainage water. In spite of the higher metal pool, urban compost favoured root length due to its greater content of DOC and TDN in soil solution.", "keywords": ["Enmiendas org\u00e1nicas", "WiA", "Metal availability", "Soil contamination", "Contaminaci\u00f3n del suelo", "11. Sustainability", "Impactos de la miner\u00eda", "Organic amendment", "Disponibilidad de metales", "Tecnolog\u00eda de los Alimentos", "15. Life on land", "Mining impacts"], "contacts": [{"organization": "Mart\u00ednez Or\u00f3, D., P\u00e1rraga Aguado, Isabel Mar\u00eda, Gonz\u00e1lez Alcaraz, Mar\u00eda Nazaret, Conesa Alcaraz, H\u00e9ctor Miguel,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10317/11116"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%207th%20Workshop%20on%20Agri-Food%20research.%20WiA", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10317/11116", "name": "item", "description": "10317/11116", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10317/11116"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-02-29T00:00:00Z"}}, {"id": "10261/369333", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:24:34Z", "type": "Report", "title": "Efectos de la aplicaci\u00f3n de compost vegetal y biochar de alperujo en la calidad del suelo, fisiolog\u00eda vegetal y din\u00e1mica del carbono en un olivar superintensivo", "description": "Open AccessUno de los mayores desaf\u00edos de la agricultura actual es garantizar el suministro de alimentos para una poblaci\u00f3n en crecimiento, mientras m\u00e1s del 40% de los suelos cultivables est\u00e1n degradados, aumentando la dependencia de la fertilizaci\u00f3n mineral. El reciclaje y la valorizaci\u00f3n de residuos agr\u00edcolas, como sustratos o enmiendas del suelo, se propone como una alternativa para recuperar la calidad del suelo y gestionar los residuos agr\u00edcolas. En la \u00faltima d\u00e9cada, el biochar, un producto s\u00f3lido rico en carbono org\u00e1nico derivado de la pir\u00f3lisis de biomasa, ha ganado atenci\u00f3n como enmienda para mejorar las propiedades del suelo, y almacenar carbono. Este ensayo compara el impacto del biochar de alperujo y el compost vegetal en las propiedades del suelo, la productividad del cultivo, la fisiolog\u00eda del olivo y las tasas de respiraci\u00f3n del suelo en una plantaci\u00f3n super-intensiva de arbequina bajo riego deficitario (30% demanda h\u00eddrica). Se aplicaron dosis equivalentes a 40 t/ha de biochar, compost y una mezcla de ambos (50% p/p), junto con parcelas no enmendadas (control), totalizando 96 parcelas de 1 m\u00b2 (24 por tratamiento). El biochar aument\u00f3 significativamente la capacidad de retenci\u00f3n de agua del suelo, redujo la compactaci\u00f3n y mejor\u00f3 el potencial h\u00eddrico de las plantas. Mejor\u00f3 la tasa de fotos\u00edntesis neta de los olivos en per\u00edodos pre-cosecha, la eficiencia del uso del agua y la tasa de transporte electr\u00f3nico en los \u00e1rboles, incrementando un 15% el rendimiento en peso del fruto. Sin embargo, el rendimiento neto de aceite por \u00e1rbol fue similar debido al mayor contenido de humedad en las aceitunas. En relaci\u00f3n a la din\u00e1mica del carbono, el biochar increment\u00f3 el contenido de carbono org\u00e1nico del suelo, principalmente carbono recalcitrante. Las tasas de respiraci\u00f3n del suelo aumentaron con la temperatura, siendo m\u00e1s elevadas en suelos tratados con compost durante el primer a\u00f1o, tendencia que no se observ\u00f3 en la mezcla de compost y biochar.", "keywords": ["Reciclado", "Enmiendas org\u00e1nicas", "Econom\u00eda circular", "Secuestro de carbono", "Materia org\u00e1nica del suelo", "Valorizaci\u00f3n"], "contacts": [{"organization": "Rosa Arranz, Jos\u00e9 M. de la, P\u00e9rez-Dal\u00ed, Sara, S\u00e1nchez-Mart\u00edn, \u00c1gueda M., M\u00e1rquez-Moreno, J., Campos D\u00edaz de Mayorga, Paloma, Miller, A. Z., Guti\u00e9rrez Patricio, S., Cubero, Beatriz, San Emeterio, Layla M., Osman, Jorge R., Jim\u00e9nez Morillo, N. T., Moreno Ortega, Jes\u00fas A., Gonz\u00e1lez-P\u00e9rez, Jos\u00e9 Antonio,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10261/369333"}, {"rel": "self", "type": "application/geo+json", "title": "10261/369333", "name": "item", "description": "10261/369333", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10261/369333"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Enmiendas+org%C3%A1nicas&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=Enmiendas+org%C3%A1nicas&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=Enmiendas+org%C3%A1nicas&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Enmiendas+org%C3%A1nicas&offset=5", "hreflang": "en-US"}], "numberMatched": 5, "numberReturned": 5, "distributedFeatures": [], "timeStamp": "2026-05-26T13:17:58.263657Z"}