Edaphic Soil Science, Introduction to

Singh, Balwant; Cattle, Stephen R.; Field, Damien J.

doi:10.1016/b978-0-444-52512-3.00092-9

Cited by 13 publications

(8 citation statements)

References 12 publications

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“…Soil penetration resistance with a cone penetrometer is also used to indicate the degree of soil compaction, but it is closely tied with the water content of the soil. Dry soil is simply more resistant to penetration than is wet soil (Singh et al., 2014). For grazing impacts on soil structure and/or physical condition, it would be suggested a combination of bulk density, soil organic C concentration, and aggregate distribution as a function of depth, meaning that multiple depth increments would be ideal to characterize the impacts.…”

Section: How Does Grazing Influence Grassland Soil Responses?mentioning

confidence: 99%

How does grassland management affect physical and biochemical properties of temperate grassland soils? A review study

Mayel

Jarrah

Kuka

2021

Grass and Forage Science

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Temperate grasslands occupy 9 million km 2 , representing 8% of earth's terrestrial surface (Figure 1) (Sala et al., 2013;White et al., 2000). Most permanent grasslands are land-use systems established by humans over centuries and therefore a part of our cultural landscape (Hejcman et al., 2013). Grasslands occur most commonly where site-specific conditions are less favourable for crop farming, while primarily found on marginal land. Grassland herbaceous plant communities evolved in close relation with herbivores and are adapted to defoliation. Defoliation is defined as removing plant shoots by grazing or mowing, and it is described in terms of intensity, interval between events, timing relative to season or plant growth stage, or by its spatial heterogeneity (Sollenberger

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Section: How Does Grazing Influence Grassland Soil Responses?mentioning

confidence: 99%

How does grassland management affect physical and biochemical properties of temperate grassland soils? A review study

Mayel

Jarrah

Kuka

2021

Grass and Forage Science

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“…Metals may be present in soil solution in three major states, as free (non-complexed) ions, inorganic and organic soluble or insoluble complexes. Their bioavailability depends on a binding capacity of soil and a number of factors, like pH, redox potential, soil texture, clay and organic matter content, occurrence of iron and manganese oxyhydroxides, presence of different anions and cations, and activity of microorganisms (Schlesinger and Bernhardt 2020;Singh et al 2014). According to the literature, bioavailability of trace metals and element transfer from the soil solution to the root depend on this parameter (Singh et al 2014).…”

Section: Ph and CLmentioning

confidence: 99%

“…Their bioavailability depends on a binding capacity of soil and a number of factors, like pH, redox potential, soil texture, clay and organic matter content, occurrence of iron and manganese oxyhydroxides, presence of different anions and cations, and activity of microorganisms (Schlesinger and Bernhardt 2020;Singh et al 2014). According to the literature, bioavailability of trace metals and element transfer from the soil solution to the root depend on this parameter (Singh et al 2014). However, no significant correlations were found between the pH of soil solutions and trace element contents in soils and individual parts of plant.…”

Section: Ph and CLmentioning

confidence: 99%

Bioavailability of selected trace and rare earth elements to Juncus effusus L.: the potential role of de-icing chlorides in the roadside environment

et al. 2022

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Background and aim The presence of chlorides in soils, e.g., from de-icing salts may change metal availability to plants. Methods To assess the role of de-icing chlorides on bioavailability of metals, the samples of the rhizosphere soils, roots and shoots of Juncus effusus L. were collected monthly from April to June of 2019 in the vicinity of roads and analyzed for trace (Ag, Cd, Co, Cu, Pb, Zn) and rare earth elements (from La to Lu). Results Concentrations of Cl− were distinctly higher in the shoots than in the roots. Apart from Cd, the concentration sequence of the other metals was as follows: rhizosphere soils>roots>shoots. The bioaccumulation and translocation factors indicated that Cd was the most preferably transported to the shoots as opposed to Ag, Co, Pb and REEs that showed a very low translocation potential. Negative correlations, which were noted between Cu and Co in the shoots and Cl− in soils, revealed their role in salinity stress alleviation. All soil samples showed a positive anomaly of Ce and a negative anomaly of Eu, whereas the shoots showed in turn a negative anomaly of Ce and a distinct positive anomaly of Eu. The lowest salinity factors (K/Na, Ca/Na) of the shoots resulted from an increase of salinity in J. effusus by higher sodium concentrations derived from de-icing NaCl. Conclusions De-icing agents may change the uptake of other elements. In natural habitats, the factors affecting this process include: type of element, soil metal concentrations and interactions, and individual plant features.

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“…3c). This could be explained by the structural characteristics of the KRfeldspar, since the cation is contained in a highly stable and resistant crystalline aluminum silicate structure, which makes its release more difficult (20). The igneous origin of KRfeldspar results in lower reactivity, compared to the sedimentary rock (KRpolyhalite).…”

Section: Effect Of Organic Acid Type On Potassium Solubilizationmentioning

confidence: 99%

“…However, about 95% of the minerals in the Earth's crust are igneous, formed from the crystallization of magma released during volcanic eruptions. The K-feldspars (KAlSi3O8) are among the most common igneous KRs, representing 60% of the oceanic and continental crust of the planet (20). They are formed by tetrahedral silica and aluminum groups, strongly linked together by cations, with the K inserted in the crystalline structure, making it difficult to extract (12).…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Solubilization of Potassium Mineral Rocks in Organic Acids for Application as K-fertilizer

Lodi

Klaic

Bortoletto-Santos

et al. 2021

Preprint

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Organic acids produced by soil microorganisms can be useful to promote the release of potassium (K) from potassium mineral rocks (KR), but the complexity of low-reactivity minerals limits K solubilization and their use as fertilizer. Here, we investigate the ways that different organic acids (gluconic, oxalic, and citric) can affect the solubilization of potassium minerals, in order to propose process strategies to improve their solubility. For this, evaluations were performed using the model minerals KRpolyhalite (sedimentary mineral), KRfeldspar (igneous mineral), and KCl (commercial fertilizer). For KCl and KRpolyhalite, complete solubilization was achieved using all the organic acids, while for KRfeldspar, the highest K+ solubilization (34.86 mg L-1) was achieved with oxalic acid. The solubility of KRfeldspar was further investigated under submerged cultivation with the filamentous fungus Aspergillus niger, as well as after a mechanochemical grinding treatment. The biotechnological route resulted in solubilized K+ up to 63.2 mg L-1. The mechanochemical route, on the other hand, increased the release of K+ by about 8.6 times (993 mg L-1) compared to the natural mineral, due to the greater fragmentation of the particles after the treatment (with a surface area about 2.5 times higher than for the in natura KRfeldspar). These findings demonstrated the potential of applying biotechnological and mechanochemical routes with organic acids to improve the solubilization of K present in low reactivity mineral rocks, contributing to the use of these minerals as fertilizers in more sustainable agricultural practices.

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Edaphic Soil Science, Introduction to

Cited by 13 publications

References 12 publications

How does grassland management affect physical and biochemical properties of temperate grassland soils? A review study

How does grassland management affect physical and biochemical properties of temperate grassland soils? A review study

Bioavailability of selected trace and rare earth elements to Juncus effusus L.: the potential role of de-icing chlorides in the roadside environment

Unveiling the Solubilization of Potassium Mineral Rocks in Organic Acids for Application as K-fertilizer

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