Sampling probes affect bulk density and soil organic carbon measurements

Sharma, Sumit; Wilson, Tracy M.; Ochsner, Tyson; Warren, Jason G.

doi:10.1002/ael2.20005

Cited by 4 publications

(2 citation statements)

References 20 publications

(30 reference statements)

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“…These initial estimates can be refined further by using repeated soil sampling and laboratory procedures in the future. Although tracking temporal change in ρ b may be challenging given the uncertainty involved in sampling, within‐field soil heterogeneity, handling, and determination techniques (Han et al., 2016; Nemes et al., 2010; Sharma et al., 2020; Xu et al., 2016), it is expected that over sufficient time, a decent estimate and trajectory of ρ b can be elucidated.…”

Section: Resultsmentioning

confidence: 99%

Uncertainty resulting from constant bulk density assumption when interpreting soil nutrient concentrations

Singh,

Kukal

2024

Agricultural & Env Letters

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Soil nutrient concentrations are often expressed as parts per million (ppm) in soil test reports. For incorporation into nutrient management decisions, ppm‐based concentrations have to be converted into pounds per acre, and a conversion factor (multiplier) of 2.0 is typically recommended universally to do so. However, this conversion factor stems from an assumed value of bulk density (ρb) corresponding to silt loam soil and is invariant to any deviation beyond assumed ρb. Here, we quantify and evaluate the potential ramifications of assuming a constant ρb value on calculating soil nitrogen credits. A true dynamic conversion factor that is sensitive to variation in ρb ranges between 1.28 and 2.68 for soils across US cropland. Failure to account for this dynamic conversion factor was shown to result in an underestimation of soil N credits by up to 40%. In addition to spatial variation, management‐induced changes in ρb are also important to incorporate into the conversion factor.

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Section: Resultsmentioning

confidence: 99%

Uncertainty resulting from constant bulk density assumption when interpreting soil nutrient concentrations

Singh,

Kukal

2024

Agricultural & Env Letters

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“…Soil bulk density characterizes the compaction of soil and its water permeability and is therefore an important index used to assess SOC [42]. However, the soil surface and soil bulk density are prone to change due to erosion or deposition of material, swelling or compaction, and anthropogenic activities [43]. In agreement with the findings from Gebrehiwot et al (2018) [44], our results showed that SOC stock had a significant positive correlation with soil bulk density, especially in fluvial plain area and closed floodplain (p<0.05).…”

Section: Effect Of Soil Characteristics On Soc Stockmentioning

confidence: 99%

Effect of Agricultural Land-Use Patterns on Soil Organic Carbon Stock in the Upper Vietnamese Mekong Delta

Ly¹,

Nguyen²,

Anh³

et al. 2022

Pol. J. Environ. Stud.

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In the mitigation strategies of climate change, improving soil carbon storage is considered as one of the main tasks to enhance agricultural sustainability and sequester atmospheric carbon dioxide. Agricultural patterns have been changing significantly and causing many impacts on soil organic carbon (SOC) storage in the upper Vietnamese Mekong Delta (VMD). Therefore, this study aims to evaluate how typical agricultural pattern changes are affecting SOC by estimating the SOC stock and identifying the correlation with soil physic-chemical properties. Soil samples were collected in both depths of 0-20 cm and 20-50 cm and analyzed physic-chemical properties such as soil texture, bulk density, pH KCl , EC and SOC. In topsoil layers, the SOC stock of the wetland forest was the highest in the opened depression of floodplain (24.42±1.38 kg C m -2 ; p<0.05) while that of paddy rice was the richest at depth of 20-50 cm (27.69±2.97 kg C m -2 ; p<0.05). In other agro-ecological areas, SOC stock in croplands was lower than forest and grassland in topsoil layer, especially in mountainous areas. SOC stock correlated positively with SOC content, clay, bulk density, and EC (p<0.05) but had a negative correlation with sand and pH KCl (p<0.05). The decrease in SOC stock in dry cultivating patterns indicated the impact of agricultural management practices and soil fertility on SOC storage. Thus, improving SOC stock

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Bulk density and coarse fragment content of the French soil monitoring network for better assessment of changes of soil organic carbon stocks

Munera-Echeverri,

Boulonne,

Arrouays

et al. 2025

CATENA

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Sampling probes affect bulk density and soil organic carbon measurements

Cited by 4 publications

References 20 publications

Uncertainty resulting from constant bulk density assumption when interpreting soil nutrient concentrations

Uncertainty resulting from constant bulk density assumption when interpreting soil nutrient concentrations

Effect of Agricultural Land-Use Patterns on Soil Organic Carbon Stock in the Upper Vietnamese Mekong Delta

Bulk density and coarse fragment content of the French soil monitoring network for better assessment of changes of soil organic carbon stocks

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