Crop residues on the soil surface of no-till systems can intensify ammonia volatilization from N fertilizers applied to cereal crops. This study assessed the magnitude of N losses through ammonia volatilization from urea applied to no-till winter (wheat) and summer crops (maize) on a Typic Hapludox in the south-central region of Paran\uffc3\uffa1, southern Brazil. In addition, the potential of alternative N sources (urea with urease inhibitor, liquid fertilizer, ammonium nitrate and ammonium sulfate) and different urea managements (fertilizer applied in the morning or afternoon) were evaluated. Two experiments with maize and wheat were carried out for two years, arranged in a randomized block design with four replications. Nitrogen volatilization losses were assessed with a semi-open static collector until 21 days after fertilization. In winter, the losses were low (<5.5 % of applied N) for all N sources, which were not distinguishable, due to the low temperatures. In the summer, volatilization rates from urea were higher than in the winter, but did not exceed 15 % of applied N. The main factor decreasing N losses in the summer was the occurrence of rainfall in the first five days after fertilization. Urea with urease inhibitor, nitrate and ammonium sulfate were efficient to decrease ammonia volatilization in maize, whereas the application time (morning or afternoon) had no influence.
", "keywords": ["2. Zero hunger", "Yield", "Aduba\u00e7\u00e3o nitrogenada", "Agriculture (General)", "rendimento", "Trigo", "Brasil", " Regi\u00e3o Sul", "aduba\u00e7\u00e3o nitrogenada", "nitrogen fertilization", "Efficiency", "04 agricultural and veterinary sciences", "Plantio direto", "yield", "efici\u00eancia", "6. Clean water", "S1-972", "Milho", "Nitrogen fertilization", "efficiency", "0401 agriculture", " forestry", " and fisheries"], "contacts": [{"organization": "Viero, Fernando, Bayer, Cim\u00e9lio, Fontoura, Sandra Mara Vieira, Moraes, Renato Paulo de,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1590/s0100-06832014000500017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Revista%20Brasileira%20de%20Ci%C3%AAncia%20do%20Solo", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0100-06832014000500017", "name": "item", "description": "10.1590/s0100-06832014000500017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0100-06832014000500017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-10-01T00:00:00Z"}}, {"id": "10.1590/s0100-67622008000600002", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-07-26T16:19:36Z", "type": "Journal Article", "created": "2010-01-08", "title": "Biomass Quantification And Emission Reduction Certificates For Rubber - Cocoa Intercropping", "description": "Os objetivos deste trabalho foram quantificar a biomassa vegetal e analisar o potencial de gera\uffc3\uffa7\uffc3\uffa3o de Certificados de Emiss\uffc3\uffb5es Reduzidas (CERs) em um cons\uffc3\uffb3rcio de seringueira (Hevea brasiliensis) M. Arg. aos 34 anos de idade com cacaueiro (Theobroma cacao L.) aos 6 anos de idade. O experimento foi realizado nas Fazendas Reunidas Vale do Juliana, em Igrapi\uffc3\uffbana, Bahia. A quantifica\uffc3\uffa7\uffc3\uffa3o da biomassa arb\uffc3\uffb3rea foi feita utilizando-se o m\uffc3\uffa9todo direto e destrutivo de cinco seringueiras e 10 cacaueiros, selecionados em uma \uffc3\uffa1rea de 2,2 ha. A biomassa da serapilheira foi quantificada por meio da coleta do material sobre o solo. O estoque de carbono no cons\uffc3\uffb3rcio seringueira-cacau foi de 91,5 Mg C ha-1. Desse total, 84,7 Mg C ha-1 estavam estocados na seringueira, 5,2 Mg C ha-1 no cacaueiro e 1,6 Mg C ha-1 na serapilheira. O carbono contabilizado no cons\uffc3\uffb3rcio correspondeu a 336 Mg CO2eq. ha-1, que equivalem \uffc3\uffa0 gera\uffc3\uffa7\uffc3\uffa3o de 336 CERs ha-1. O cons\uffc3\uffb3rcio seringueira-cacau apresentou capacidade para estocagem de carbono, podendo trazer grandes contribui\uffc3\uffa7\uffc3\uffb5es para a redu\uffc3\uffa7\uffc3\uffa3o dos gases de efeito estufa na atmosfera, e isso o credencia como atividade promissora na gera\uffc3\uffa7\uffc3\uffa3o de projetos candidatos ao recebimento de cr\uffc3\uffa9ditos de carbono.
", "keywords": ["2. Zero hunger", "0106 biological sciences", "carbon credits", "Biomassa", "04 agricultural and veterinary sciences", "7. Clean energy", "01 natural sciences", "Hevea brasiliensis", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Theobroma cacao", "Biomass", "cr\u00e9ditos de carbono"]}, "links": [{"href": "https://doi.org/10.1590/s0100-67622008000600002"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Revista%20%C3%81rvore", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0100-67622008000600002", "name": "item", "description": "10.1590/s0100-67622008000600002", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0100-67622008000600002"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-12-01T00:00:00Z"}}, {"id": "10400.5/96651", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-07-26T16:24:44Z", "type": "Journal Article", "created": "2024-11-07", "title": "The diazotrophic bacteria Azospirillum baldaniorum and A. brasilense improve wheat seedlings' nitrogen budget through ammonia scavenging", "description": "Open AccessBesides N2 fixation, we consider that other diazotrophic traits can be explored to increase plants\u2019 nitrogen (N) budget. Here, we report initial results of the capacity of the diazotrophic plant growth promoting rhizobacteria Azospirillum baldaniorum and A. brasilense to improve wheat seedlings\u2019 N budget through ammonia (NH3) scavenging. We inoculated wheat seedlings with two Azospirillum strains (A. baldaniorum Sp245 and A. brasilense ARG2) and determined its effect on plant biomass, N content and N isotopic signatures (i.e., \u03b415N). Furthermore, using bipartite Petri dishes, we grew the Azospirillum strains under increasingly alkaline conditions (from pH 7.5 to 10.0), which created a gradient of atmospheric NH3 concentrations ([NH3]), and we used Saccharomyces cerevisiae mutants to explore the involvement of the AMT/MEP/Rh proteins in atmospheric NH3 scavenging. Wheat seedlings inoculated with A. baldaniorum Sp245 and A. brasilense ARG2 increased their N content by 65 and 94 % (respectively), and their negative N isotopic signatures (around \u2212 10 \u2030, which contrasted with positive signatures in control plants) were compatible with NH3 transport through AMT/MEP/Rh transporters, but not with N2 fixation. Furthermore, increasing the atmospheric [NH3] stimulated the growth rate of the Azospirillum strains up to 5-fold in relation to ambient atmospheric [NH3], showing that both Azospirillum strains scavenged the atmospheric NH3 and used it to grow. Our data clearly show that: i) NH3 scavenging by A. baldaniorum Sp245 and A. brasilense ARG2 is involved in increasing plant\u2019s N budget; and ii) NH3 transport through AMT/MEP/Rh protein family transporters is involved in microbial NH3 scavenging. This overlooked microbial trait can be an interesting tool to mitigate atmospheric [NH3], especially in farming environments.", "keywords": ["AMT/MEP/Rh protein family; Atmospheric NH3 scavenging; Azospirillum baldaniorum; Azospirillum brasilense; Nitrogen; Plant\u2019s nitrogen budget"]}, "links": [{"href": "https://repositorio.ulisboa.pt/bitstream/10400.5/96705/1/Dias%20et%20al%202024.pdf"}, {"href": "https://repositorio.ulisboa.pt/bitstream/10400.5/96651/1/1-s2.0-S0929139324004682-main.pdf"}, {"href": "https://doi.org/10400.5/96651"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20Soil%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10400.5/96651", "name": "item", "description": "10400.5/96651", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10400.5/96651"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-12-01T00:00:00Z"}}, {"id": "20.500.12123/10635", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:25:25Z", "type": "Journal Article", "created": "2021-05-18", "title": "Landholders' perceptions on legal reserves and agricultural intensification: Diversity and implications for forest conservation in the eastern Brazilian Amazon", "description": "Open AccessLa protecci\u00f3n de los bosques en tierras de propiedad privada es una piedra angular del marco de la pol\u00edtica ambiental brasile\u00f1a. La legislaci\u00f3n brasile\u00f1a exige que todas las fincas del pa\u00eds mantengan y protejan las \u00e1reas forestales conocidas como Reservas Legales. Dado que las Reservas Legales tienen importantes implicaciones para la protecci\u00f3n de los bosques y la producci\u00f3n agr\u00edcola, es clave que entendamos las percepciones de los propietarios de tierras hacia las Reservas Legales. Aplicamos la metodolog\u00eda Q para identificar diferentes perspectivas de los propietarios medianos y grandes sobre las Reservas Legales y su relaci\u00f3n con la intensificaci\u00f3n agr\u00edcola en el municipio de Paragominas, en la Amazon\u00eda oriental. Realizamos 31 entrevistas en las que los propietarios ordenaron 36 declaraciones en una matriz de distribuci\u00f3n casi normal. Se identificaron tres grupos de propietarios de tierras: 1) los entusiastas de la planificaci\u00f3n del uso de la tierra (n = 16) estaban interesados en iniciativas de zonificaci\u00f3n para explorar dise\u00f1os de paisajes alternativos y legislaci\u00f3n que puedan ofrecer mejores resultados de conservaci\u00f3n y producci\u00f3n; 2) los partidarios de la agricultura basada en agroqu\u00edmicos (n = 7) ten\u00edan los puntos de vista m\u00e1s cr\u00edticos contra las Reservas Legales y percib\u00edan sus costos como m\u00e1s altos que los posibles beneficios ambientales y de calidad de vida; 3) los respondedores del mercado complacientes con las pol\u00edticas (n = 4) no mostraron inter\u00e9s en las reformas de las Reservas Legales y fueron el grupo m\u00e1s impulsado por el mercado. Si bien Paragominas ha logrado \u00e9xitos notables en detener la deforestaci\u00f3n a gran escala a trav\u00e9s de un pacto social de 'Municipio Verde', abordar la persistente degradaci\u00f3n y fragmentaci\u00f3n de los bosques en la regi\u00f3n sigue siendo una prioridad clave. Las iniciativas de gobernanza local que tienen en cuenta las percepciones de m\u00faltiples partes interesadas sobre la protecci\u00f3n de los bosques pueden fomentar el di\u00e1logo y el entendimiento mutuo para conservar y restaurar eficazmente las Reservas Legales. Los conocimientos sobre las percepciones de los grandes terratenientes sobre las Reservas Legales pueden informar dichos procesos de gobernanza para conciliar la protecci\u00f3n forestal y la intensificaci\u00f3n agr\u00edcola sostenible en Paragominas.", "keywords": ["Amazonas (Brasil)", "Economics", "FOS: Political science", "SAO-FELIX", "http://aims.fao.org/aos/agrovoc/c_16141", "Social Sciences", "NEEDS", "01 natural sciences", "Agricultural and Biological Sciences", "Reservas Forestales", "Natural resource economics", "conservation des for\u00eats", "FRONTIER", "K01 - Foresterie - Consid\u00e9rations g\u00e9n\u00e9rales", "Stakeholder", "11. Sustainability", "Business", "Environmental resource management", "intensification", "Political science", "Legal Reserve", "Environmental planning", "2. Zero hunger", "Global and Planetary Change", "Forest Reserves", "Corporate governance", "Geography", "Ecology", "[SDV.SA.AEP] Life Sciences [q-bio]/Agricultural sciences/Agriculture", " economy and politics", "Forest protection", "Life Sciences", "Agriculture", "Amazonas (Brazil)", "04 agricultural and veterinary sciences", "Brazilian Amazon", "LAND CONFLICT", "STATE", "Land Tenure and Property Rights in Agriculture", "Management", "Programming language", "E11 - \u00c9conomie et politique fonci\u00e8res", "Economics", " Econometrics and Finance", "Archaeology", "http://aims.fao.org/aos/agrovoc/c_4184", "Physical Sciences", "d\u00e9boisement", "Biodiversity Conservation", "[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture", " forestry", "Forest Protection", "Forest conservation", "Economics and Econometrics", "propri\u00e9taire foncier", "Conservaci\u00f3n de la Diversidad Biol\u00f3gica", "Amazon rainforest", "Legislation", "Discrete Choice Models in Economics and Health Care", "Soil Science", "http://aims.fao.org/aos/agrovoc/c_15590", "FOS: Law", "http://aims.fao.org/aos/agrovoc/c_331593", "12. Responsible consumption", "Farmer perceptions", "SYSTEMS", "politique de l'environnement", "http://aims.fao.org/aos/agrovoc/c_1374158672853", "K70 - D\u00e9g\u00e2ts caus\u00e9s aux for\u00eats et leur protection", "Agroforestry", "http://aims.fao.org/aos/agrovoc/c_2597", "Biology", "Legal Pluralism", "0105 earth and related environmental sciences", "Protecci\u00f3n Forestal", "http://aims.fao.org/aos/agrovoc/c_28136", "Agricultural intensification", "15. Life on land", "Computer science", "Q methodology", "Deforestation (computer science)", "13. Climate action", "http://aims.fao.org/aos/agrovoc/c_33485", "FOS: Biological sciences", "Environmental Science", "r\u00e9serve foresti\u00e8re", "r\u00e9serve naturelle", "0401 agriculture", " forestry", " and fisheries", "d\u00e9gradation des for\u00eats", "BIODIVERSITY", "DEFORESTATION", "Drivers and Impacts of Tropical Deforestation", "Law", "Finance"]}, "links": [{"href": "https://doi.org/20.500.12123/10635"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Policy%20and%20Economics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "20.500.12123/10635", "name": "item", "description": "20.500.12123/10635", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20.500.12123/10635"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-08-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Brasil&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=Brasil&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=Brasil&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Brasil&offset=7", "hreflang": "en-US"}], "numberMatched": 7, "numberReturned": 7, "distributedFeatures": [], "timeStamp": "2026-07-26T21:01:13.887576Z"}