{"type": "FeatureCollection", "features": [{"id": "10.1016/j.agee.2007.08.005", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:15:18Z", "type": "Journal Article", "created": "2007-09-22", "title": "Cattle Manure And Grass Residues As Liming Materials In A Semi-Subsistence Farming System", "description": "Abstract   A field experiment was conducted on an acid soil in a semi-subsistence farming area of KwaZulu-Natal, South Africa to investigate the possibility of using organic amendments as liming materials within a minimum tillage (strip cultivation) system to produce maize. Amendments (cattle manure, grass residues and dolomitic lime) were incorporated to a depth of 20\u00a0cm in bands 15\u00a0cm wide down plant rows at rates of 10 and 20\u00a0t\u00a0ha \u22121  (in the amended area) for organic materials and 2.5 and 5.0\u00a0t\u00a0ha \u22121  for lime. The remainder of the field remained untilled. Additions of cattle manure rapidly increased soil pH, and concentrations of exchangeable K, Ca and Mg and extractable P were also greatly elevated. Grass residue additions increased pH progressively and increased exchangeable K and Mg and those of dolomitic lime increased pH, exchangeable Ca and Mg. Addition of each of the amendments decreased concentrations of exchangeable Al; the effect was greatest for animal manure after 6 weeks and for lime and grass residues at harvest. At harvest, addition of all three amendments had significantly reduced concentrations of both phytotoxic monomeric and total Al in soil solution. The system not only resulted in an increase in pH and extractable nutrients in row soil compared to that in the inter-row but also an increase in the size and activity of the soil microbial community. Maize yields were increased by additions of amendments under both unfertilised and fertilised conditions and yields were generally greatest at the higher rate of addition. Under unfertilised conditions, cattle manure treatments gave the greatest yields. Fertiliser additions increased yields greatly particularly in the control, grass residue and lime treatments. It was concluded that the strip tillage system used is a practicable way of applying high rates of organic materials to soils, that cattle manure has a rapid liming effect as well as being a nutrient source and that grass residues from rangeland decompose slowly and, therefore, have a slow liming effect.", "keywords": ["0106 biological sciences", "2. Zero hunger", "Soil acidity", "Lime", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "630", "Strip tillage", "050304 Soil Chemistry (excl. Carbon Sequestration Science)", "0401 agriculture", " forestry", " and fisheries", "0503 Soil Sciences", "CX", "9614 Soils", "Organic amendments"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2007.08.005"}, {"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.2007.08.005", "name": "item", "description": "10.1016/j.agee.2007.08.005", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2007.08.005"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1071/sr08108", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-24T16:17:50Z", "type": "Journal Article", "created": "2009-02-18", "title": "Tillage System Affects Phosphorus Form And Depth Distribution In Three Contrasting Victorian Soils", "description": "<p>  Major changes in tillage practices have occurred over the past 2 decades across the diverse range of soil types and rainfall zones that characterise cropping systems in southern Australia. However, there has been little corresponding change in the management of nutrients, especially phosphorus (P). This study investigated the effects of tillage and crop rotations on the stratification and transformation of P in soil profiles from 3 tillage/rotation trials encompassing 3 agro-ecological zones of southern Australia. Soil samples were collected from field trials at Longerenong (Vertosol, average rainfall 420\uffe2\uff80\uff89mm), Walpeup (Calcarosol, rainfall 325\uffe2\uff80\uff89mm), and Rutherglen (Chromosol, rainfall 650\uffe2\uff80\uff89mm) in Victoria. Soil samples from various depths were sequentially analysed for organic and inorganic P fractions. Phosphorus accumulated in the surface soil (0\uffe2\uff80\uff930.1\uffe2\uff80\uff89m) across all sites and tillage practices/rotations studied but the proportion of P in different chemical fractions varied markedly among soil types and tillage practice/rotation. In the sandy Calcarosol, a greater proportion of fertiliser P was transformed into labile (resin-P) forms, whereas it tended to accumulate in non-labile pools in the finer textured Vertosol and Chromosol. The effects of tillage and crop rotation were generally confined to the topsoil with P strongly stratified in the topsoil in direct-drill and zero-tillage treatments compared with conventional tillage. The implications for management of P fertilisers in Victorian cropping systems are discussed. </p>", "keywords": ["2. Zero hunger", "Soil N", "0503 (four-digit-FOR)", "050304 Soil Chemistry (excl. Carbon Sequestration Science)", "Crop rotation", "Long-term trials", "0401 agriculture", " forestry", " and fisheries", "Agro-ecological zone", "04 agricultural and veterinary sciences", "Soil type", "15. Life on land", "P fractions", "Tillage systems"], "contacts": [{"organization": "Tang, Caixian., Vu, Dang Thanh., Armstrong, R. D.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1071/sr08108"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1071/sr08108", "name": "item", "description": "10.1071/sr08108", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1071/sr08108"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-01-01T00:00:00Z"}}, {"id": "10.2134/jeq2010.0419", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:19:58Z", "type": "Journal Article", "created": "2011-02-22", "description": "<p>Nitrous oxide (N2O) emissions from grazing animal excreta are estimated to be responsible for 1.5 Tg of the total 6.7 Tg of anthropogenic N2O emissions. This study was conducted to determine the in situ effect of incorporating biochar, into soil, on N2O emissions from bovine urine patches and associated pasture uptake of N. The effects of biochar rate (0\uffe2\uff80\uff9330 t ha\uffe2\uff88\uff921), following soil incorporation, were investigated on ruminant urine\uffe2\uff80\uff90derived N2O fluxes, N uptake by pasture, and pasture yield. During an 86\uffe2\uff80\uff90d spring\uffe2\uff80\uff90summer period, where irrigation and rainfall occurred, the N2O fluxes from 15N labeled ruminant urine patches were reduced by &gt;50%, after incorporating 30 t ha\uffe2\uff88\uff921 of biochar. Taking into account the N2O emissions from the control plots, 30 t ha\uffe2\uff88\uff921 of biochar reduced the N2O emission factor from urine by 70%. The atom% 15N enrichment of the N2O emitted was lower in the 30 t ha\uffe2\uff88\uff921 biochar treatment, indicating less urine\uffe2\uff80\uff90N contributed to the N2O flux. Soil NO3\uffe2\uff88\uff92\uffe2\uff80\uff90N concentrations were lower with increasing biochar rate during the first 30 d following urine deposition. No differences occurred, due to biochar addition, with respect to dry matter yields, herbage N content, or recovery of 15N applied in herbage. Incorporating biochar into the soil can significantly diminish ruminant urine\uffe2\uff80\uff90derived N2O emissions. Further work is required to determine the persistence of the observed effect and to fully understand the mechanism(s) of the observed reduction in N2O fluxes.</p>", "keywords": ["bovine urine", "550", "Nitrogen", "Nitrous Oxide", "Urine", "Soil", "ANZSRC::0702 Animal Production", "ANZSRC::0503 Soil Sciences", "Animals", "Humans", "biochar", "Weather", "2. Zero hunger", "nitrous oxide", "ANZSRC::31 Biological sciences", "emissions", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "ANZSRC::050304 Soil Chemistry (excl. 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Climate action", "Charcoal", "ANZSRC::41 Environmental sciences", "0401 agriculture", " forestry", " and fisheries", "Cattle", "Volatilization"]}, "links": [{"href": "https://doi.org/10.2134/jeq2010.0419"}, {"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/jeq2010.0419", "name": "item", "description": "10.2134/jeq2010.0419", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2010.0419"}, {"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"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=050304+Soil+Chemistry+%28excl.+Carbon+Sequestration+Science%29&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=050304+Soil+Chemistry+%28excl.+Carbon+Sequestration+Science%29&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=050304+Soil+Chemistry+%28excl.+Carbon+Sequestration+Science%29&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=050304+Soil+Chemistry+%28excl.+Carbon+Sequestration+Science%29&offset=3", "hreflang": "en-US"}], "numberMatched": 3, "numberReturned": 3, "distributedFeatures": [], "timeStamp": "2026-05-25T07:12:30.320543Z"}