Results 31 to 40 of about 3,139 (249)

In situ study of soil processes in an oxisol-spodosol sequence of Amazonia (Brazil) [PDF]

, 1990
L'étude in situ de l'évolution d'échantillons de vermiculite et de résines à cations échangeables et kelates insérés dans le sol met en évidence les processsus pédogénétiques caractérisant une séquence de sols de la région de Manaus ...
Bravard, S., Chauvel, Armand, Ranger, J., Righi, D., Robert, M.   +4 more
core   +1 more source

Profilowe zróżnicowanie form żelaza i glinu w glebach pod świerczyn górnoreglową Plagiothecio-Piccetum tatricum w Gorcach jako wskaźnik aktualnych procesów glebotwórczych / Distribution of Iron and Aluminum Forms as an Indicator of Present-Day Soil-Forming Processes in Soil Profiles under Wooded Spruce Plagiothecio-Piccetum Tatricum in the Gorce Mts. (Southern Poland)

Soil Science Annual, 2015
The aim of the study was to determine soil-forming processes in soils formed from the Magura sandstones (Carpathian flysch) under wooded spruce Plagiothecio-Piccetum tatricum in the Gorce Mts., southern Poland. The research focused on distribution of non-
Miechówka Anna, Zaleski Tomasz, Kowalczyk Elżbieta   +2 more
doaj   +1 more source

Solos sob vegetação de restinga na Ilha do Cardoso (SP): I - Caracterização e classificação Soils under restinga vegetation on the Cardoso Island (SP): I - Characterization and classification

Revista Brasileira de Ciência do Solo, 2007
A vegetação de restinga é uma formação típica que ocorre nas planícies costeiras arenosas da costa brasileira, principalmente sobre solos quartzosos e pobres em nutrientes.
Felipe Haenel Gomes, Pablo Vidal-Torrado, Felipe Macías, Bruno Gherardi, Xosé Luiz Otero Perez   +4 more
doaj   +1 more source

Magnetic susceptibility of permafrost soils of the forest catena in Central Yakutia [PDF]

Сибирский лесной журнал, 2021
The magnetic susceptibility (MS) of three types of permafrost forest soils (pale-yellow, pale-brown, and podzolic) formed on permafrost soil-forming rocks in the cryoarid climate of Central Yakutia for the first time was studied.
A. P. Chevychelov, A. A. Alekseev, L. I. Kuznetsova   +2 more
doaj   +1 more source

Genesis of the sombric horizon in ultisols (red argisols) in southern Santa Catarina, Brazil Gênese do horizonte sômbrico em argissolos vermelhos do sul de Santa Catarina

Revista Brasileira de Ciência do Solo, 2009
Dark subsurface horizons, with properties similar to the sombric horizon characterized by the USA Soil Taxonomy, are frequent in Southern Brazil. The genesis of this horizon is controversial and poorly understood.
Jaime Antonio de Almeida, Denis Cesar Cararo, Antônio Ayrton Auzani Uberti   +2 more
doaj   +1 more source

Evaluation of the roles of metals and humic fractions in the podzolization of soils from the Amazon region using two analytical spectroscopy techniques

Microchemical journal (Print), 2019
Soil organic matter (SOM) plays an important role in environmental sustainability, since it is involved in carbon and nutrient cycling. Consequently, it is a key factor to consider in studies concerning global climate change and agronomy.
A. Tadini, G. Nicolodelli, B. Marangoni, S. Mounier, C. Montes, D. Milori   +5 more
semanticscholar   +1 more source

Carbon pool ratios as scientific support to field morphology in the differentiation of dark subsurface soil horizons

Scientia Agricola, 2015
In soil surveys, it is usual to find profiles with an uncommon disposition of horizons. Dark horizons in depth might be either the consequence of erosion and redeposition of soil materials from upslope or an indication of the podzolization process, which
Maíra Akemi Toma, Phillip Ray Owens, Carlos Alberto Silva, Sérgio Henrique Godinho Silva, Elen Alvarenga Silva, Nilton Curi   +5 more
doaj   +1 more source

Morphology, mineralogy and micromorphology of soils associated to summit depressions of the Northeastern Brazilian Coastal Plains Morfologia, mineralogia e micromorfologia de solos de depressões de topo de Tabuleiros Costeiros do Nordeste Brasileiro

Ciência e Agrotecnologia, 2012
The scarcity of comprehensive characterizations of soils associated to gentle summit depressions of the Northeastern Brazilian Coastal Plains justifies this work, which had as objective to provide basic information for the more diverse agricultural and ...
Elen Alvarenga Silva, João Bosco Vasconcellos Gomes, José Coelho de Araújo Filho, Pablo Vidal-Torrado, Miguel Cooper, Nilton Curi   +5 more
doaj   +1 more source

Rock-eating mycorrhizas: their role in plant nutrition and biogeochemical cycles [PDF]

, 2014
A decade ago, tunnels inside mineral grains were found that were likely formed by hyphae of ectomycorrhizal (EcM) fungi. This observation implied that EcM fungi can dissolve mineral grains. The observation raised several questions on the ecology of these
Breemen, N., van, Hoffland, E., Kuyper, T.W., Landeweert, R., Schöll, L., van, Smits, M.M.   +5 more
core   +7 more sources

Seletividade do pirofosfato de sódio e de cloretos não tamponados (CuCl2 e LaCl3) como extratores de alumínio associado à matéria orgânica em solos de restinga do estado de São Paulo Selectivity of sodium pyrophosphate and unbuffered chlorides (CuCl2 and LaCl3) as extractants of aluminum bound to soil organic matter in soils of the sandy coastal plain in São Paulo state

Revista Brasileira de Ciência do Solo, 2010
O Al em complexos com matéria orgânica do solo é comumente determinado por técnicas de dissolução seletiva. Um extrator comum para essa forma do elemento é o pirofosfato de sódio.
Maurício Rizzato Coelho, Pablo Vidal-Torrado, Xosé Luis Otero Pérez, Vanda Moreira Martins, Felipe Macías Vázquez   +4 more
doaj   +1 more source