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	Provedor de dados Rev. Bras. Ciênc. Solo (2) Autor Caner,Laurent (2) Bortoluzzi,Edson Campanhola (1) Kaminski,João (1) Moterle,Diovane Freire (1) Rheinheimer,Danilo dos Santos (1) Santanna,Maria Alice (1) Santos,Danilo Rheinheimer dos (1) Schenato,Ricardo Bergamo (1) Tiecher,Tales (1) Mais... Palavra-chave 2:1 clay minerals (1) Eutrophication (1) K fertilization (1) Land use (1) Non-exchangeable K (1) Nonpoint source pollution (1) Phosphorus fractionation (1) Potassium forms (1) Watershed (1) X-ray diffraction (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2019 (1) 2017 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Phosphorus Forms in Sediments as Indicators of Anthropic Pressures in an Agricultural Catchment in Southern Brazil Rev. Bras. Ciênc. Solo Tiecher,Tales; Schenato,Ricardo Bergamo; Santanna,Maria Alice; Caner,Laurent; Santos,Danilo Rheinheimer dos. ABSTRACT Phosphorus (P) fractionation is a suitable procedure to ascertain P lability in sediments and is able to distinguish sources of P under different soil management practices in a catchment. Brazil is the second largest producer and the largest exporter of tobacco in the world. Inadequate management of cultivated areas exposes the soil to erosion processes, accelerating the transfer of sediment and P to water bodies, which leads to eutrophication. We evaluated the P forms in suspended sediments collected at two rainfall events in the stream of a small catchment in the state of Rio Grande do Sul. The samples were collected upstream and downstream areas in three sub-catchments with different degrees of anthropogenic pressure and in three phases of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus fractionation; Watershed; Nonpoint source pollution; Eutrophication; Land use. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100431 Does Ferralsol Clay Mineralogy Maintain Potassium Long-Term Supply to Plants? Rev. Bras. Ciênc. Solo Moterle,Diovane Freire; Bortoluzzi,Edson Campanhola; Kaminski,João; Rheinheimer,Danilo dos Santos; Caner,Laurent. ABSTRACT Ferralsols ( Latossolos ) should contain few or no 2:1 clay minerals and have low potassium (K) contents, and consequently low levels of non-exchangeable K forms are expected. The aim of this study was to evaluate how the clay mineralogy of a Ferralsol affects the soil K dynamics in response to K fertilization during cropping and whether the clay mineralogy was altered due to successive crops and K fertilization. A tropical Brazilian Ferralsol under field conditions was sampled (0.00-0.20 m) in contrasting K fertilization plots: no K application (control plot) and 3,200 kg ha-1 applied K2O fertilizer. These two treatments were submitted at eight different crop cycles, performed in pots under greenhouse conditions, and fertilized with 0, 30, and 90... Tipo: Info:eu-repo/semantics/article Palavras-chave: Potassium forms; K fertilization; Non-exchangeable K; 2:1 clay minerals; X-ray diffraction. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100512 Registros recuperados: 2 Primeira ... 1 ... Última

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