Analysis of stacked Permo-Pennsylvanian palaeosols from north-central Texas documents the influence of palaeolandscape position on pedogenesis in aggradational depositional settings. Palaeosols of the Eastern shelf of the Midland basin exhibit stratigraphic trends in the distribution of soil horizons, structure, rooting density, clay mineralogy and colour that record long-term changes in soil-f...

Quaternary magnetic studies have provided the conceptual framework to bridge magnetic studies into ancient systems. In cases where environmental materials have been subjected to diagenetic alteration two questions come to mind: 1) What part of the magnetic signal is preserved in the rocks; and 2) can the preserved signal be used to infer/identify magnetic patterns that are characteristic of the...

The aim of this study was to evaluate the effect application biourin fertilizer and Mycorrhizal Vesicles Arbuscula (MVA) dosage on P dynamics, uptake yield shallots in vertisols. This designed with a factorial design pattern basis randomized block (RBD). treatment tested concentration (B), four levels: B10: Concentration 10 ml.l-1 water, B20: 20 B30: 30 water B40: 40 water. second MVA dose leve...

The soils of Gadas, object the present study, are identified on macromorphological, physico-chemical level and indices erodibility related to their properties. analyzes were carried out by standard methods. macromorphological analysis a toposequence made it possible identify five types soils: lithosols which occupy high zones landscape, colluvial (arenosols, regosols) located piedmont, alluvial...

In the discipline of civil engineering, foundation plays a crucial role in supporting and containing loads complete structures. Therefore, needs to be strong enough increase any structure's useful life. The soil has direct impact on foundation. Vertisols is with unstable weak that stabilized make suitable for construction purposes. study determine effectiveness pulverized used paper sugarcane s...

Increased droughts and variable rainfall patterns may alter the capacity to provide ecosystem services, such as biomass production clean water provision. The impact of these factors in a semi-arid region, especially on dry tropical forest with Vertisols under different land uses regenerated vegetation thinned vegetation, is still unclear. This study analyzes hydrologic processes precipitation p...

Soil organic carbon (SOC) sequestration is important for improving soil fertility of cropland and for the mitigation of greenhouse gas emissions to the atmosphere. The efficiency of SOC sequestration depends on the quantity and quality of the organic matter, soil type, and climate. Little is known about the SOC sequestration efficiency of organic amendments in Vertisols. Thus, we conducted the ...

Rural areas represent approximately 95% of the 14000 km(2) Alabama Black Belt, an area of widespread Vertisols dominated by clayey, smectitic, shrink-swell soils. These soils are unsuitable for conventional onsite wastewater treatment systems (OWTS) which are nevertheless widely used in this region. In order to provide an alternative wastewater dosing system, an experimental field moisture cont...

Vertisols have unique morphology and the capacity to change volume with changes in water content; therefore, they are well known for their spatial and temporal variability. Our objectives were to address the spatial variability of Vertisol surface and subsurface features, as well as the spatial and temporal variability of Vertisol cracking. First, we discuss surface and subsurface features of V...