{"type": "FeatureCollection", "features": [{"id": "10.1023/a:1009870308097", "type": "Feature", "geometry": null, "properties": {"license": "unspecified", "updated": "2026-09-20T16:16:37Z", "type": "Journal Article", "title": "Effect Of Slaked Lime And Gypsum On Acidity Alleviation And Nutrient Leaching In An Acid Soil From Southern China", "description": "A soil column experiment was made to study the effects of slaked lime (Ca(OH)2) and gypsum (CaSO4\u00b72H2O) on soil acidity, soil solution chemistry and nutrient leaching in an acid soil from Southern China. Results showed that application of sufficient slaked lime to initially increase the pH of the topsoil by 1 unit caused an increase in pH to 5 cm deeper than the layer of application as a result of bicarbonate leaching. With leaching of Ca from slaked lime or gypsum from the topsoil to the subsoil there was a decrease in exchangeable Al in the subsoil. Surface application of slaked lime or gypsum or both decreased the activity of toxic Al and increased AlSO4+ activity in the subsoil solution. The Ca added in slaked lime or gypsum was accounted for by the increase in exchangeable Ca over the soil profile and the leaching loss. By contrast there was a negative balance of extractable sulfate and aluminum in the soil, indicating the formation of precipitates. There was little mineralisation of N and formation of NO3- under the conditions of the experiment. The leaching of cations in this soil treated with slaked lime or gypsum was driven by the dynamics of sulfate.", "keywords": ["P33 - Chimie et physique du sol", "propri\u00e9t\u00e9 physicochimique du sol", "calcium", "lessivage du sol", "aluminium", "http://aims.fao.org/aos/agrovoc/c_7182", "http://aims.fao.org/aos/agrovoc/c_15591", "http://aims.fao.org/aos/agrovoc/c_200", "sulfate", "http://aims.fao.org/aos/agrovoc/c_317", "http://aims.fao.org/aos/agrovoc/c_1196", "gypse", "hydroxyde de calcium", "http://aims.fao.org/aos/agrovoc/c_1556", "sol acide", "min\u00e9ralisation", "http://aims.fao.org/aos/agrovoc/c_89", "http://aims.fao.org/aos/agrovoc/c_15999", "http://aims.fao.org/aos/agrovoc/c_1200", "amendement calcique", "http://aims.fao.org/aos/agrovoc/c_3453", "http://aims.fao.org/aos/agrovoc/c_7510", "F04 - Fertilisation"], "contacts": [{"organization": "Sun, B., Poss, Roland, Moreau, Roland, Aventurier, Alain, Fallavier, Paul,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1023/a:1009870308097"}, {"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": "10.1023/a:1009870308097", "name": "item", "description": "10.1023/a:1009870308097", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/a:1009870308097"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2000-01-01T00:00:00Z"}}, {"id": "10.1051/agro:2003428", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:16:57Z", "type": "Journal Article", "created": "2007-02-09", "title": "Drainage Runoff And Migration Of Mineral Elements In Organic And Conventional Cropping Systems", "description": "Open AccessIn the present investigation, organic and intensive cropping systems were compared on small autonomous drainage plots in limed Luvisoils and Cambisoils as well as non-acid Cambisoils during the period 1995-1998. In the intensive cropping system with balanced nutrient application, the yield of all crops was 38-77% higher than in the organic cropping system. Cropping intensity had no influence on mineral concentration in drainage water, which depended on geochemical soil media. The concentrations of Cl$^-$ and NO$_3^-$ in drainage water were, respectively, 8-22 and 24-80% higher than in the organic system. But at low N application, improvement of fertilisation efficiency increased crop yield and decreased nitrate leaching at the same time. The leached amount of solutes depended mainly upon drainage runoff, which was 6-57% lower in the intensive cropping system than in the organic one, and much less upon its concentration. From this study, organic agriculture has no essential advantage compared with intensive agriculture, considering the amount of leached elements and compounds, and secondarily, crop productivity.", "keywords": ["lessivage", "[SDV.SA] Life Sciences [q-bio]/Agricultural sciences", "yield<br>---<br>agriculture intensive", "organic agriculture", "rendement", "04 agricultural and veterinary sciences", "01 natural sciences", "fertilisation", "intensive agriculture", "leaching", "[SDV.EE] Life Sciences [q-bio]/Ecology", " environment", "agriculture biologique", "nitrate", "0401 agriculture", " forestry", " and fisheries", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Antanas Sigitas Sileika, Saulius Guzys,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1051/agro:2003428"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agronomie", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1051/agro:2003428", "name": "item", "description": "10.1051/agro:2003428", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1051/agro:2003428"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2003-11-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=lessivage&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=lessivage&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=lessivage&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=lessivage&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-09-20T19:08:10.895476Z"}