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Sulfur (S) has long been recognized as essential for plant metabolism, but over the last 30years the increasing deficit of sulfur has become a problem all over the world. For this reason, more research should be devoted to determining the content and spatio-temporal variability of sulfur in relation to an improved management of this element. The aims of this study were to assess the spatio-temporal...
It is known that the migratory ant Pachycondyla marginata, and its prey, the termite Neocapritermes opacus, synthesize magnetic minerals which may contribute to the magnetic characteristics of soil. A comparative study of the magnetic properties of the minerals found in those species, as well as their nests and surrounding soil aimed at investigating the contribution of the biogenic minerals to the...
Proximal sensing, such as electromagnetic induction, has been used to map the spatial distribution of soil properties; however, the response of these instruments to short-interval variability associated with Vertisols has not been studied. Meter-scale circular landscape features called gilgai, which are associated with surface and subsurface variability, make sampling these soils difficult, especially...
Real-time monitoring of soil salinity based on field samples and laboratory analyses is a costly and time demanding procedure, so that sound methods that could reduce the burden by making use of cheaper data would be a step toward a more sustainable salinity hazards monitoring system on the long run. Typically, this involves replacing presumably error-free laboratory salinity measurements with indirect...
A catenary sequence of soils formed on reworked loess under semiarid climatic conditions was studied. Four soil profiles located on the piedmont of Sierra Chica de Córdoba, central Argentina, were described, classified and geochemically analyzed. All soils, developed on summit, shoulder, backslope, and toeslope positions, were classified as Mollisols. Decarbonatation-carbonatation, melanization, and...
The bioavailability of selenium (Se) in soil partly determines Se deficiency in human health. Soil organic matter (OM) is an important soil component that controls Se bioavailability. Better understanding of the interaction between selenium and soil organic matter will be scientifically and practically significant in terms of Se risk assessment in the environment and Se biofortification for human...
Soil moisture plays a vital role in maintaining the sustainability of dryland ecosystems. Accurately predicting soil moisture scarcity (SMS) has an important interest of guidance to soil and water conservation. In this study, we gathered a time series of soil moisture measurements throughout the growing season (from April to October) in an area of approximately 100km2 in a desert oasis of northwestern...
The objective of this study was the detailed characterization of “technogenic” magnetic particles (TMPs) separated from contaminated industrial soils. Moreover, non-carcinogenic health risk posed by “technogenic” metals Pb and Zn via the ingestion exposure pathway was carried out. Volume magnetic susceptibility (κ) was measured directly in the field around a chemical industry in Sindos industrial...
Magnetic susceptibility is used worldwide as a measure of concentration of (ferri)magnetic minerals in soil, sediment and dust. In soils, these minerals are of various origins: air-derived particulate pollution, parent rocks or pedogenesis. Human activity causes different changes in the content of magnetic minerals as well as their spatial and vertical distribution in soil profiles. Magnetic minerals...
Continuous excessive application of phosphorus (P) fertilizer and/or manure can lead to P accumulation in soils and progressive saturation of soil P sorption capacities, thus resulting in increased P loss from soil to aquatic ecosystems. Yet the responses of P fractions and sorption characteristics to P fertilization in paddy soil, a special type of arable soil with long periods of waterlogged conditions,...
Flooded soils are systems with complex chemistry and understanding the mechanisms that control the mobility and bioavailability of metals in these soils is important for their management. This work uses stable metal multi-element isotopic dilution combined with sequential extraction assays to help understand the changes in solid and solution speciation of Cd, Fe, Pb and Zn in a contaminated soil following...
The response of soil microbial communities from soils with different soil organic matter (SOM) content to organic inputs with different stability is still poorly understood. Thus, an incubation experiment was designed to study how the addition of pig slurry (PS), its manure (M) and its biochar (BC) affect soil microbial community and activity in three soils differing in SOM content (Regosol, Luvisol...
Although there are evidences that most, if not all, soil physical and mechanical processes on larger scales have their origin in processes and properties at the microscale, the range of methods to investigate micro-scaled soil behavior directly is limited. One method to detect flow and deformation behavior under steady and transient stresses is rheometry. This method is well established by means of...
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