Pores Reconfiguration in Compacted Bernam Series Soil

Yahya, Yahya Yahya

doi:10.3844/ajassp.2011.212.216

Cited by 6 publications

(5 citation statements)

References 8 publications

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“…It is commonly accepted that densification and/or compaction causes an increase in micropore (pore diam. < 0.02 µm), and mesopore (0.02–30 µm) regions, but decreases in the macropore (> 30 µm) region (Yahya et al, 2011). In keeping with this idea, a noticeable shift in the dominant pore size with depth was observed for both TE and WK soils, while the TmS soil showed mixed behavior.…”

Section: Resultsmentioning

confidence: 99%

Soil‐Gas Diffusivity and Soil‐Moisture effects on N₂O Emissions from Intact Pasture Soils

Deepagoda

Jayarathne

Clough

et al. 2019

Soil Science Soc of Amer J

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Grazed pastures are recognized as a dominant source of nitrous oxide (N2O), a highly potent greenhouse gas. Studies have examined soil physical controls on N2O emissions, including soil moisture status. Limited attempts to link N2O emissions with soil‐diffusivity (Dp/Do), using repacked soil cores, have shown peak N2O emissions to align with a relatively narrow window of Dp/Do, despite a relatively wide range in water‐filled pore space (WFPS), across a range of soil bulk densities. Such detailed studies have not been performed with intact soil cores. We investigated the effects of soil‐water characteristic (SWC) and Dp/Do on N2O emissions from intact soil samples, retrieved at three depths (0–5, 5–10, 10–15 cm) from three perennial pasture sites that received a KNO3 solution (1800 mg, N mL−1). We observed distinct fingerprints of SWC and Dp/Do, which showed clear effects of soil structure on diffusion‐controlled gas emissions. Depth‐wise variation in soil moisture diminished as the soil was subjected to higher matric potential (> ∼ ‐100 kPa). Variation in Dp/Do, was more pronounced in the dry soil (> ∼ ‐1000 kPa), being largely constrained by soil moisture in wet soil (∼ ‐100 kPa) with little depth‐wise variation. Measured N2O fluxes peaked within narrow ranges of WFPS and Dp/Do, 0.90–0.95 and 0.005–0.01, respectively. The value of Dp/Do can be determined using parametric models and presents a pasture management (e.g., irrigation, soil physical disturbance such as pasture renovation and animal treading)) tool to minimize N2O emissions: soil Dp/Do should be maintained above a range of 0.005–0.01 to minimize N2O emissions. Core Ideas Peak N2O fluxes from intact soil cores occurred when diffusivity ranged from 0.005–0.01 This peak N2O flux diffusivity range was 0.005–0.01 regardless of soil or depth (0–15 cm) The diffusivity range for peak N2O flux equalled that observed in repacked soil cores Diffusivity values are readily determined and add to the suite of soil management tools

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Section: Resultsmentioning

confidence: 99%

Soil‐Gas Diffusivity and Soil‐Moisture effects on N₂O Emissions from Intact Pasture Soils

Deepagoda

Jayarathne

Clough

et al. 2019

Soil Science Soc of Amer J

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“…By contrast, the presence of semicapillary and noncapillary pores ensure that the gravitational motion of water in the soil decreased. Yahya et al (2011) proved in their long-term experiment that the passage of machinery has a great effect on the occurrence of individual pores, namely that there is a negative development in the presence of semicapillary and noncapillary pores in comparison with capillary ones. However, they only focused on the upper 0.1 m. Destain et al (2016) recorded the largest changes in porosity caused by the passage of agricultural machinery at a depth of 0.07 to 0.25 m in the luvisol type.…”

Section: Resultsmentioning

confidence: 99%

Changes to the physical properties of the soil after the passage of an agricultural tractor

Šimečková¹,

Polcar²,

Hammerová³

et al. 2021

Int. Agrophys.

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The effect of the passage of agricultural machinery on the soil is influenced by, for example, the inflation pressure in tyres. This article describes the effect of different tyre inflation pressures (200 and 100 kPa) on selected physical soil properties in the field experiment. The undisturbed samples were collected both in and between the tracks at depths of 0 to 0.5 m and subsequently processed according to a valid methodology in the laboratory. The results indicate that fewer negative changes were found in the variant with a lower inflation pressure for all of the observed soil properties (front wheels load 2 990 kg and rear wheels 11 760 kg). However, the differences between the pressures were not statistically significant. The impact of different tyre pressures at greater depths has also not been proven to date. This may be attributed to the creation of a plough pan due to the long-term use of the minimization technique because the values of individual properties were balanced at a depth of 0.2 to 0.3 m. These depths do not react to further tractor compaction due to the accumulation of compaction. Changes to the values of soil physical properties caused by the passage of the tractor were statistically significant for both tyre pressure variants only at depths ranging from 0 to 0.1 m.K e y w o r d s: soil compaction, tyre inflation pressure, physical properties

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“…The effects of peat compaction (either derived passively though conversion or as an active aim) do not only occur at the early stage of oil palm cycle, but continuously throughout the oil palm cycle due to management activities [27][28][29][30]. However, it is not known if this effect is more pronounced in specific areas within a plantation (e.g., closer to palms or closer to palm frond piles).…”

Section: Peat Soil Compactionmentioning

confidence: 99%

“…Specifically, this technique involves land clearing and construction of water canals to control the level of water table [45,46] and to prepare the land for oil palm seedling planting [27]. Second, peat compaction continuously occurs within the entire palm cycle due to plantation management activities, such as fertiliser and liming application [45], as well as harvesting of FFB and frond piling [30] -though these effects may be heterogeneous in their extent across plantation 'microsites'. Third, apart from anthropogenic activities, the impact from abiotic factors (e.g., rainfall, seasonal variation, and peat maturity) may be considered as minor contribution within this process [47,48].…”

Section: Peat Soil Compaction -The Process and Justificationmentioning

confidence: 99%

“…This condition causes reconfiguration of soil pores, reduction in soil volume, restriction on the available oxygen, decreased water infiltration, and increased water content (e.g. gravimetric and volumetric water content and waterfilled pore space) [30,48,64,70,71]. Kuncoro et al [56] asserted that deformation of physical structures in compacted soils can affect air and water transportation in various ways, depending on the connectivity of macro pores.…”

Section: Effect Of Compaction On Tropical Peat Soil 61 Physicochemica...mentioning

confidence: 99%

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The Role of Compaction on Pyhsicochemical Properties and Carbon Emissions of Tropical Peat Soils: A Review

Samuel

Evers

2023

Jurnal Teknologi

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The peat compaction method is currently adopted by Malaysia oil palm companies to mitigate the uprising environmental issues. This method is claimed to be effective in minimising the risk of fire through enhancement of soil moisture due to capillary effect. In this review, the authors discussed on the peatland function in global perspective, the important of peat soil compaction, emergence of potential peat compaction in oil palm plantation establishment, peat compaction processes and the effects of compaction on physicochemical properties and carbon emission via peat surface and fire. Authors also found that compaction terminology on tropical peatland should be defined wisely, as it closely depends on the initial water table level and the peat quality. Thus, the retrieved information could serve as basic platform to further probe into the highlighted aspects and may as well function as a guide for management of these sensitive ecosystems, particularly in light of carbon loss mitigation.

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Pores Reconfiguration in Compacted Bernam Series Soil

Cited by 6 publications

References 8 publications

Soil‐Gas Diffusivity and Soil‐Moisture effects on N₂O Emissions from Intact Pasture Soils

Soil‐Gas Diffusivity and Soil‐Moisture effects on N₂O Emissions from Intact Pasture Soils

Changes to the physical properties of the soil after the passage of an agricultural tractor

The Role of Compaction on Pyhsicochemical Properties and Carbon Emissions of Tropical Peat Soils: A Review

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Pores Reconfiguration in Compacted Bernam Series Soil

Cited by 6 publications

References 8 publications

Soil‐Gas Diffusivity and Soil‐Moisture effects on N2O Emissions from Intact Pasture Soils

Soil‐Gas Diffusivity and Soil‐Moisture effects on N2O Emissions from Intact Pasture Soils

Changes to the physical properties of the soil after the passage of an agricultural tractor

The Role of Compaction on Pyhsicochemical Properties and Carbon Emissions of Tropical Peat Soils: A Review

Contact Info

Product

Resources

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Soil‐Gas Diffusivity and Soil‐Moisture effects on N₂O Emissions from Intact Pasture Soils

Soil‐Gas Diffusivity and Soil‐Moisture effects on N₂O Emissions from Intact Pasture Soils