2 results

Gypsic soils in the Brazilian Semiarid

Artur Henrique Nascimento da Silva ORCID logo , Marilya Gabryella Sousa ORCID logo , José Coelho de Araújo Filho ORCID logo , Marcelo Metri Corrêa ORCID logo , Xose Lois Otero ORCID logo , Tiago Osório Ferreira ORCID logo , [...]

19/Mar/2025

ABSTRACT Globally, soils with gypsic horizons cover approximately 1 million km², predominantly in arid climates. The formation of pedogenic gypsum in soils has been a topic of discussion in pedological studies for some time, with gypsification representing the process responsible for secondary gypsum accumulation. Even though international classification systems acknowledge the existence of gypsic horizons, there is a paucity of documented evidence concerning their occurrence in Brazilian soils. This study aimed to identify and describe a soil with secondary gypsum […]

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Characterization of irrigated and nonirrigated yellow podzolic soils from the São Francisco river valley (Brazil)

J. A. Dantas, M. C. Santos, R. J. Heck

01/Dec/1998

Micro-macromorphological, physical, chemical and mineralogical investigations were conducted on irrigated and non-irrigated Podzolic soils from Petrolina, Pernambuco, Brazil. The aim of this study was to characterize and evaluate differentiation among soils, as a function of their position in the landscape, due to the combined effects of surface and subsurface relief as well as five years of sprinkle irrigation on mango trees. Data from four profiles were used, two from the irrigated area and two from a contiguous area of natural […]