The effect of four calcium‐based amendments on soil aggregate stability of two sandy topsoils

Vargas, G.; Verdejo, José; Rivera, Adrian; Suárez, D.; Youlton, Cristián; Celis‐Diez, Juan L.; Bissonnais, Yves Le; Dovletyarova, Elvira A.; Neaman, Alexander

doi:10.1002/jpln.201700562

Cited by 16 publications

(6 citation statements)

References 38 publications

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“…Bivalent Ca 2+ ions in the soil solution minimise the diffuse double layer (Vargas et al 2019). The attraction between clay particles then increases, leading to flocculation, which is a prerequisite for aggregation (Payne 1988).…”

Section: Different Reactions On Different Soilsmentioning

confidence: 99%

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

2022

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Context. In Sweden, mixtures of 80-85% ground limestone and 15-20% slaked lime (hereafter, 'structure lime') are used in subsidised environmental schemes to improve aggregate stability and mitigate phosphorus losses on clay soils. Aims. This study investigated different rates of structure lime application and soil variables on aggregate stability on clay soils, and whether soil properties can predict aggregate stability following structure liming. Methods. Increasing application rates of 0-16 t ha −1 of structure lime (SL0, SL4, SL8 and SL16) were tested in 30 field trials in Sweden. Soil aggregates (2-5 mm) were collected 1 year after liming and subjected to two rainfall events in a rain simulator. Key results. Leachate turbidity after the second simulated rainfall event decreased significantly (13% and 20%, respectively, in SL8 and SL16) compared with SL0, indicating improved aggregate stability. There was a near-significant interaction (P = 0.056) between treatment and trial. Grouping by initial pH ðH 2 OÞ (range 6.2-8.3), clay content (10-61%), soil organic matter content (SOM, 2.2-7.1) and clay mineralogy (SmV index, 0.2-3.8) revealed different effects on turbidity. Discriminant analysis of soil characteristics and four tillage variables correctly classified the outcome for 27 of the 30 trial sites. Conclusions. Results show that structure liming can improve aggregate stability 1 year after liming, and can thereby prevent particulate P losses from soils with high clay and SOM content, low SmV index and low initial pH. The discriminant analysis also showed the importance of tillage for the outcome of structure liming. Implications. Clay soil characteristics such as SOM and pH significantly affected aggregrate stability after structure liming.

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Section: Different Reactions On Different Soilsmentioning

confidence: 99%

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

2022

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“…Calcium is commonly known for its role as one of the essential, secondary plant nutrients. However, Ca also plays critical roles in improving soil physical characteristics, such as developing soil structure by improving clay flocculation, leading to better aggregate stability and improved soil drainage (Vargas et al., 2019). Soil Ca concentrations and Ca availability and mobility are affected by the soil's pH, soil texture, CEC, and soil mineral concentrations.…”

Section: Resultsmentioning

confidence: 99%

Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

Simms,

Brye,

Roberts

et al. 2024

Agrosystems Geosci & Env

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Phosphorus (P) can be recovered from wastewater and used as an alternative fertilizer, namely, struvite [MgNH4PO4·6(H2O)]. However, the soil mobility of wastewater‐derived P and other nutrients needs to be evaluated. The objective of this study was to compare the vertical distribution of water‐soluble (WS) soil P and other nutrients from a synthetic‐wastewater‐derived electrochemically precipitated struvite (ECST) to that from a chemically precipitated struvite (CPST), triple superphosphate (TSP), monoammonium phosphate (MAP), and a control in six soils from Arkansas (AR; loam [L] and silt loam [SiL]), Missouri (MO; SiL 1 and SiL 2), and Nebraska (NE; sandy loam [SL] and SiL). A column‐leaching experiment was conducted with the six soils and five fertilizer‐P treatments. Water‐soluble (WS) P from the two struvite materials generally did not differ (p > 0.05) and was similar to that of MAP in the depths of 0–3, 3–6, and 6–10 cm, but was greater than that of TSP in the top 6 cm in four of the six soils. WS P from CPST in the MO‐SiL 2 and NE‐SL soils (6.6 and 12.7 mg kg−1, respectively) was larger than that from ECST, MAP, and TSP. In the AR‐L and MO‐SiL 1 soils, TSP was the only fertilizer‐P source that had increased WS P concentrations in the top 6 cm relative to the other fertilizer‐P sources. Results showed that ECST‐derived, WS P had similar soil profile distributions in the top 10 cm, suggesting that ECST will be equally protective of environmental health and leachate quality across multiple soil textures as other common fertilizer‐P sources.

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“…Ca is an important element for the stability of soil aggregates, particularly by binding clay particles together [148]. Mg is the central element of green plant pigment and helps to regulate water balance [149].…”

Section: Calcium (Ca) and Magnesium (Mg)mentioning

confidence: 99%

The Effects of Manure Application and Herbivore Excreta on Plant and Soil Properties of Temperate Grasslands—A Review

Brummerloh,

Kuka

2023

Agronomy

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This review provides an overview of grassland studies on the effects of manure application and herbivore excreta on plant and soil properties in temperate grasslands. Grass biomass from grazing or mowing is mainly used for animal products such as milk or meat, as well as for energy or raw materials for biorefineries. Manure application or grazing has a significant impact on several plant and soil properties. There are effects on soil chemical properties, such as increased carbon sequestration, improved nutrient availability, and increased pH. Additionally, several physical soil properties are improved by manure application or grazing. For example, bulk density is reduced, and porosity and hydraulic conductivity are greatly improved. Some biological parameters, particularly microbial biomass and microbial and enzyme activity, also increase. The use of manure and grazing can, therefore, contribute to improving soil fertility, replacing mineral fertilizers, and closing nutrient cycles. On the other hand, over-application of manure and overgrazing can result in a surplus of nutrients over plant needs and increase losses through emission or leaching. The lost nutrients are not only economically lost from the nutrient cycle of the farm but can also cause environmental damage.

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The effect of four calcium‐based amendments on soil aggregate stability of two sandy topsoils

Cited by 16 publications

References 38 publications

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

Soil characteristics and tillage can predict the effect of ‘structure lime’ on soil aggregate stability

Soil profile distribution of nutrients in contrasting soils amended with struvite and other conventional phosphorus fertilizers

The Effects of Manure Application and Herbivore Excreta on Plant and Soil Properties of Temperate Grasslands—A Review

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