Buscar
Mostrando ítems 1-10 de 786
Mineralogical characterization of a highly-weathered soil by the Rietveld Method
(São Paulo - Escola Superior de Agricultura "Luiz de Queiroz", 2010)
The mineralogical characterization through mineral quantification of Brazilian soils by X-ray diffraction data using the Rietveld Method is not common. A mineralogical quantification of an Acric Ferralsol from the Ponta ...
The effect of Ferralsol mineralogy on the distribution of organic C across aggregate size fractions under native vegetation and no-tillage agriculture
(2017-06-01)
No-tillage management can increase soil surface layer organic C (OC) levels compared with conventional tillage. The mechanisms underlying this increase in highly weathered tropical soils, such as Ferralsols, are not well ...
Cation exchange capacity and mineralogy of loess soils with different amounts of volcanic ashes
(Elsevier, 2014-05)
The cation exchange capacity of soils (CEC) is largely affected by the mineralogy of their parent material. Soils of the Argentinean Pampas develop on illitic loess, mixed, in variable proportions, with volcanic ashes. ...
SOME CAUTIONS ON THE INTERPRETATION OF MÖSSBAUER SPECTRA IN MINERALOGICAL STUDIES OF VOLCANIC SOILS
(Sociedad Chilena de Química, 2000)
Liberação de potássio e alteração mineralógica em argissolos subtropicais
(Universidade Federal de Santa MariaBRAgronomiaUFSMPrograma de Pós-Graduação em Ciência do Solo, 2014-02-24)
The potassium (K) of a given soil depends primarily on its parent material. The K in the soil can be conceptually divided into: structural K, non-exchangeable K, exchangeable K, and K in the solution. Studies have shown ...
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard
(Indian Counc Agricultural Res, 2001-03-01)
A trial was conducted during 1994-95 to study the effect of potassium fertilization on a guava (Psidium guajava L.) culture for 3 years. The control plots (without K) showed fruit production and potassium exportation that ...
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard
(2001-01-01)
A trial was conducted during 1994-95 to study the effect of potassium fertilization on a guava (Psidium guajava L.) culture for 3 years. The control plots (without K) showed fruit production and potassium exportation that ...