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Mostrando ítems 11-20 de 1458
Caracterização mineralógica de Latossolos em diferentes feições do relevo na região de Jaboticabal, SP
(Univ Federal Ceara, Dept Geol, 2010-04-01)
Different surface land form expressed by the relief can cause variations in soil properties in different magnitudes, depending mainly on a specific location in the landscape. Therefore, the objective of this study was to ...
Caracterização mineralógica de Latossolos em diferentes feições do relevo na região de Jaboticabal, SP
(Univ Federal Ceara, Dept Geol, 2010-04-01)
Different surface land form expressed by the relief can cause variations in soil properties in different magnitudes, depending mainly on a specific location in the landscape. Therefore, the objective of this study was to ...
Contribution of soil organic carbon to the ion exchange capacity of tropical soils
(HAWORTH PRESS INC, 2008)
Highly weathered soils represent about 3 billion ha of the tropical region. Oxisols represent about 60% of the Brazilian territory (more than 5 million km 2), in areas of great agricultural importance. Soil organic carbon ...
EFFECTS OF CLAY FRACTION MINERALOGY ON PHYSICAL ATTRIBUTES OF A YELLOW ULTISOL TREATED WITH CHISELING
(Soc Brasil Engenharia Agricola, 2020-07-01)
The objective of this study was to evaluate the influence of minerals in the clay fraction on physical attributes of Yellow Ultisol cultivated with sugarcane and prepared with two different treatments: chiseling across the ...
Light acidification in N-fertilized loess soils along a climosequence affected chemical and mineralogical properties in the short-term
(Elsevier Science, 2015-12)
Some evidences indicate that N-fertilization of crops decreased pH values of loess soils of the Argentinean Pampas in the last decades. We analyzed the A-horizons of four N-fertilized (F) and non-fertilized (NF) paired ...
Fontes de potássio não trocável e potássio total em quatro solos do Estado do Ceará
(2007-12-01)
The mineralogical composition of the soil plow layer (0-20 cm) was analyzed for the following soil suborders (according to the Brazilian soil taxonomy): Neossolo Quartzarênico. Argissolo Vermelho-Amarelo, Cambissolo Háplico ...
Fontes de potássio não trocável e potássio total em quatro solos do Estado do Ceará
(2007-12-01)
The mineralogical composition of the soil plow layer (0-20 cm) was analyzed for the following soil suborders (according to the Brazilian soil taxonomy): Neossolo Quartzarênico. Argissolo Vermelho-Amarelo, Cambissolo Háplico ...
Mineralogia, morfologia e classsificação de saprolitos e neossolos derivados de rochas vulcânicas no Rio Grande do Sul
(Universidade Federal de Santa MariaBRAgronomiaUFSMPrograma de Pós-Graduação em Ciência do Solo, 2007-12-17)
The Neossolos Litólicos and Regolíticos (Leptosols and Regosols) cover at least 15% of the Rio Grande do Sul state (RS) area. Those soils have been classified as
low potential soils for general use, and also have been ...
MORPHOLOGY, MINERALOGY AND MICROMORPHOLOGY OF SOILS ASSOCIATED TO SUMMIT DEPRESSIONS OF THE NORTHEASTERN BRAZILIAN COASTAL PLAINS
(UNIV FEDERAL LAVRAS-UFLALAVRAS, 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 ...