{"type": "FeatureCollection", "features": [{"id": "10.1016/j.eja.2007.01.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:32Z", "type": "Journal Article", "created": "2007-03-31", "title": "Effects Of Undersown Crops On Soil Mineral N And Grain Yield Of Spring Barley", "description": "Undersowing a cereal crop can reduce nitrogen (N) leaching and increase available N for the successive crop. An undersown crop can also compete with the main crop. Seventeen plant species were undersown in spring barley (Hordeum vulgare L.) to study their suitability regarding establishment, biomass production, competition with the main crop and effects on soil mineral N. Three different seeding rates were evaluated. Italian ryegrass (Lolium multiflorum Lam.) decreased nitrate nitrogen (NO3-N) content in late autumn and timothy (Phleum pratense L.) in the succeeding spring. A mixture was optimal to reduce N leaching. Italian ryegrass is a very competitive species that should be undersown at moderate seeding rates to avoid large yield reduction in the main crop. Black medic (Medicago lupulina L.) slightly increased N leaching risk, but red clover (Trifolium pratense L.) and white clover (Trifolium repens L.) did not increase soil NO3-N content. As clovers did not compete strongly with the main crop, fairly high seeding rates can be used to maximise N fixation to benefit the successive crop. \u00a9 2007 Elsevier B.V. All rights reserved.", "keywords": ["legumes", "yields", "cover crop", "nitrogen", "soil", "soil nitrate nitrogen", "typpi", "sato", "ohra", "sekaviljely", "viljanviljely", "typpiyhdisteet", "Hordeum vulgare", "cereals", "2. Zero hunger", "maaper\u00e4", "soil ammonium nitrogen", "legume", "04 agricultural and veterinary sciences", "15. 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While a number of long-term field experiments have focused on individual agricultural practices in relation to N2O emissions, studies on the combined effects of multiple practices are lacking. This study evaluated the effect of different tillage [no-till (NT) vs. conventional plough tillage (CT)] in combination with fertilisation [mineral (MIN), compost (ORG), and unfertilised control (CON)] on seasonal N2O emissions and the underlying N-cycling microbial community in one maize growing season. Rainfall events after fertilisation, which resulted in increased soil water content, were the main triggers of the observed N2O emission peaks. The highest cumulative emissions were measured in MIN fertilisation, followed by ORG and CON fertilisation. In the period after the first fertilisation CT resulted in higher cumulative emissions than NT, while no significant effect of tillage was observed cumulatively across the entire season. A higher genetic potential for N2O emissions was observed under NT than CT, as indicated by an increased (nirK\u00a0+\u00a0nirS)/(nosZI\u00a0+\u00a0nosZII) ratio. The mentioned ratio under NT decreased in the order CON > MIN\u00a0>\u00a0ORG, indicating a higher N2O consumption potential in the NT-ORG treatment, which was confirmed in terms of cumulative emissions. The AOB/16S ratio was strongly affected by fertilisation and was higher in the MIN than in the ORG and CON treatments, regardless of the tillage system. Multiple regression has revealed that this ratio is one of the most important variables explaining cumulative N2O emissions, possibly reflecting the role of bacterial ammonia oxidisers in minerally fertilised soil. Although the AOB/16S ratio aligned well with the measured N2O emissions in our experimental field, the higher genetic potential for denitrification expressed by the (nirK\u00a0+\u00a0nirS)/(nosZI\u00a0+\u00a0nosZII) ratio in NT than CT was not realized in the form of increased emissions. Our results suggest that organic fertilisation in combination with NT shows a promising combination for mitigating N2O emissions; however, addressing the yield gap is necessary before incorporating it in recommendations for farmers.", "keywords": ["du\u0161ik", "2. Zero hunger", "compost", "denitrification", "denitrifikacija", "N$_2$O", "kompost", "15. Life on land", "sonaravno kmetijstvo", "nitrifikacija", "nitrification", "6. Clean water", "conservation agriculture", "conservation agriculture", " compost", " N$_2$O", " N-cycle", " nitrification", " denitrification", "N-cycle", "13. Climate action", "ohranitveno kmetijstvo", "ohranitveno kmetijstvo", " sonaravno kmetijstvo", " kompost", " du\u0161ik", " nitrifikacija", " denitrifikacija", "info:eu-repo/classification/udc/631.4"], "contacts": [{"organization": "Govednik, Anton, Eler, Klemen, Miheli\u010d, Rok, Suhadolc, Marjetka,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2024.172054"}, {"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.2024.172054", "name": "item", "description": "10.1016/j.scitotenv.2024.172054", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2024.172054"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-01T00:00:00Z"}}, {"id": "10.23986/afsci.5661", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:19:07Z", "type": "Journal Article", "created": "2018-07-12", "description": "<p>Nitrogen (N) leaching from spring barley with and without undersown Italian ryegrass was studied in Jokioinen, south-western Finland during five years (summer 1993&#150;spring 1998) in 1.7 m deep lysimeters (\uffc3\uff980.9 m) filled to 1.1 m with clay, silt, sand and peat soil. Tillage was performed in mid- October or in May, before sowing of the barley and ryegrass for the next season. In the second, third and fourth years of the experiment, total N leaching from barley without undersown ryegrass was 15, 7.9,32 and 38 kg ha-1 y-1 in clay, silt, sand and peat soil, respectively. Undersowing reduced N leaching by 52,31,68 and 27%. The reduction in N leaching from clay and sand when barley was undersown with ryegrass was nearly the same as the increased total uptake of N (barley +ryegrass).In sand soil, ryegrass was able to diminish the NO 3-N concentration of the drainage water well below the limit for acceptable drinking water. Spring tillage reduced N leaching only on peat soil (16%). Slight competition between the main and the undersown crop was indicated by lower N contents of the barley yield.;</p>", "keywords": ["2. Zero hunger", "syysmuokkaus", "nitrate nitrogen", "S", "nitraattityppi", "Agriculture (General)", "barley", "Agriculture", "04 agricultural and veterinary sciences", "yield", "lysimetri", "kokonaistyppi", "630", "maalajit", "S1-972", "primary tillage", "total nitrogen", "lysimeter", "soil type", "sato", "ohra", "0401 agriculture", " forestry", " and fisheries", "Ka"], "contacts": [{"organization": "Lemola, Riitta, Turtola, Eila, Eriksson, Christian,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.23986/afsci.5661"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agricultural%20and%20Food%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.23986/afsci.5661", "name": "item", "description": "10.23986/afsci.5661", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.23986/afsci.5661"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2000-01-03T00:00:00Z"}}, {"id": "20.500.12556/RUL-155883", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:22:38Z", "type": "Journal Article", "created": "2024-04-01", "title": "Mineral and organic fertilisation influence ammonia oxidisers and denitrifiers and nitrous oxide emissions in a long-term tillage experiment", "description": "Nitrous oxide (N2O) emissions from different agricultural systems have been studied extensively to understand the mechanisms underlying their formation. While a number of long-term field experiments have focused on individual agricultural practices in relation to N2O emissions, studies on the combined effects of multiple practices are lacking. This study evaluated the effect of different tillage [no-till (NT) vs. conventional plough tillage (CT)] in combination with fertilisation [mineral (MIN), compost (ORG), and unfertilised control (CON)] on seasonal N2O emissions and the underlying N-cycling microbial community in one maize growing season. Rainfall events after fertilisation, which resulted in increased soil water content, were the main triggers of the observed N2O emission peaks. The highest cumulative emissions were measured in MIN fertilisation, followed by ORG and CON fertilisation. In the period after the first fertilisation CT resulted in higher cumulative emissions than NT, while no significant effect of tillage was observed cumulatively across the entire season. A higher genetic potential for N2O emissions was observed under NT than CT, as indicated by an increased (nirK\u00a0+\u00a0nirS)/(nosZI\u00a0+\u00a0nosZII) ratio. The mentioned ratio under NT decreased in the order CON > MIN\u00a0>\u00a0ORG, indicating a higher N2O consumption potential in the NT-ORG treatment, which was confirmed in terms of cumulative emissions. The AOB/16S ratio was strongly affected by fertilisation and was higher in the MIN than in the ORG and CON treatments, regardless of the tillage system. Multiple regression has revealed that this ratio is one of the most important variables explaining cumulative N2O emissions, possibly reflecting the role of bacterial ammonia oxidisers in minerally fertilised soil. Although the AOB/16S ratio aligned well with the measured N2O emissions in our experimental field, the higher genetic potential for denitrification expressed by the (nirK\u00a0+\u00a0nirS)/(nosZI\u00a0+\u00a0nosZII) ratio in NT than CT was not realized in the form of increased emissions. Our results suggest that organic fertilisation in combination with NT shows a promising combination for mitigating N2O emissions; however, addressing the yield gap is necessary before incorporating it in recommendations for farmers.", "keywords": ["du\u0161ik", "2. Zero hunger", "compost", "denitrification", "denitrifikacija", "N$_2$O", "kompost", "15. Life on land", "sonaravno kmetijstvo", "nitrifikacija", "nitrification", "6. Clean water", "conservation agriculture", "N-cycle", "13. 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