Short‐Term Dynamics of Soil Physical Properties as Affected by Compaction and Tillage in a Silt Loam Soil

Hu, Wei; Tabley, F. J.; Beare, Michael H.; Tregurtha, Craig; Gillespie, R. N.; Qiu, Weiwen; Gosden, Peg

doi:10.2136/vzj2018.06.0115

Cited by 32 publications

(16 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Considering that the selected sites are located on the same hillslope developed upon granites, the significantly higher K sat under grassland in comparison with cropland ( Figure 2), provides a pronounced difference in K sat between these grasslands and croplands. It often results from the tillage or compaction of the soil in the topsoil layer [50]. In the tillage layer at the SSLC and DSLC sites, the structural macropores were destroyed by cultivation [51], giving rise to the significant difference in K sat between the topsoil layer and the deeper soil layer (Figure 2).…”

Section: Discussionmentioning

confidence: 99%

Hydraulic Properties in Different Soil Architectures of a Small Agricultural Watershed: Implications for Runoff Generation

Dai

Wang

Zhou

et al. 2019

Water

View full text Add to dashboard Cite

Soil architecture exerts an important control on soil hydraulic properties and hydrological responses. However, the knowledge of hydraulic properties related to soil architecture is limited. The objective of this study was to investigate the influences of soil architecture on soil physical and hydraulic properties and explore their implications for runoff generation in a small agricultural watershed in the Three Gorges Reservoir Area (TGRA) of southern China. Six types of soil architecture were selected, including shallow loam sandy soil in grassland (SLSG) and shallow loam sandy soil in cropland (SLSC) on the shoulder; shallow sandy loam in grassland (SSLG) and shallow sandy loam in cropland (SSLC) on the backslope; and deep sandy loam in grassland (DSLG) and deep sandy loam in cropland (DSLC) on the footslope. The results showed that saturated hydraulic conductivity (K sat ) was significantly higher in shallow loamy sand soil under grasslands (8.57 cm h −1 ) than under croplands (7.39 cm h −1 ) at the topsoil layer. Total porosity was highest for DSLC and lowest for SSLG, averaged across all depths. The proportion of macropores under SLSG was increased by 60% compared with under DSLC, which potentially enhanced water infiltration and decreased surface runoff. The landscape location effect showed that at the shoulder, K sat values were 20% and 47% higher than values at the backslope and footslope, respectively. It was inferred by comparing K sat values with 30 min maximum rainfall intensity at the watershed, that surface runoff would be generated in SSLC, DSLG, and DSLC sites by storms, but that no overland flow is generated in both sites at the shoulder and SSLG. The significantly higher K sat under grasslands in comparison to croplands at the backslope indicated that planting grasses would increase infiltration capacity and mitigate runoff generation during storm events. The findings demonstrated that croplands in footslope positions might be hydrologically sensitive areas in this small agricultural watershed.

show abstract

Section: Discussionmentioning

confidence: 99%

Hydraulic Properties in Different Soil Architectures of a Small Agricultural Watershed: Implications for Runoff Generation

Dai

Wang

Zhou

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…The major properties of six substrates are shown in Table 4. The soil particle size distribution was analyzed using hydrometer method and soil texture was classified according to international soil texture taxonomy 57 , the potassium dichromate oxidation-external heating method were used to measure the soil organic matter content 43 , soil permeability coefficient was determined with constant head method 58,59 . According to the rainstorms recorded by point rainfall stations on Chinese Loess Plateau 60,61 , the erosive rainstorm of 1-2 mm min −1 rainfall intensity occurred generally from June to August, a field slope is usually subject to intermittent erosion during the rainy season, resulting in continuous changes in slope morphology.…”

Section: Experimental Materialsmentioning

confidence: 99%

Erosion characteristics of different reclaimed substrates on iron tailings slopes under simulated rainfall

Guo

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Water-induced erosion of iron tailings is a serious problem affecting ecological restoration, but, little is known about how the occurrence of erosion on tailings slopes and types of reclaimed substrates that are beneficial to reducing slope erosion. This study measured the slope erosion characteristics of six reclaimed substrates including loose tailings (Lt), crusty tailings (ct), tailings incorporating mushroom residues (tM), tailings incorporating soil (tS), tailings incorporating soil and mushroom residues (TSM) and soil (S) in experimental soil flumes under three simulated intermittent rainfall events, with intensity of 60, 90 and 120 mm h −1 for the first, second and third event, respectively. Significant differences (p < 0.05) were found in erosion characteristics among the six reclaimed substrates. TM had the lowest sediment yield but the highest runoff volume without obvious rills. LT, CT and TS had the highest sediment yield rates and severe slope erosion morphology. With the increased number of rainfall events, the runoff rates of the six substrates all increased, but only the sediment yield rates of LT, CT and TS increased, the sediment yield rates of other substrates increased first and then decreased. therefore, adding agricultural organic wastes such as mushroom residues to tailings and reducing soil addition may be an effective way to reduce erosion and promote ecological restoration in soilless tailings areas. Mining is essential for maintaining society's current life style and economic development. However, mining also impacts the environment 1-3. One of the most significant environmental impacts from mining is soil erosion, which has received increasing attention 3-8. Waste dumps generated from mining usually consist of unconsolidated waste rock, parent material, tailings or their mixtures 9,10. The waste dumps are piled on the land surface in the form of overburden dump. They usually become the material source for debris flow, river sediment, and hyper-concentrated sediment flow of artificially accelerated erosion 11,12 as well as the source of wind erosion 13,14. The erosion forms and characteristics of mining waste dumps are different from those occuring naturally 5. Accumulated overburden dump material is prone to gravity erosion 12 , causing abrupt increases or decreases in sediment yield 15. Erosion in coal waste slag has shown extreme sediment fluctuation at the beginning of runoff, accompanied by local debris flow 16. Martín Duque et al. 1 observed that tailing deposits underwent severe erosion after long-term abandonment, and as a result, caused a mosaic-like erosion and sedimentary landforms with gully formations upon and piping within deposits. Therefore, at a larger scale, it is important to reconstruct stable post-mining landforms and control erosion, which have been claimed in mine reclamation regulations in different countries 17,18. Most of the traditional landform reconstruction is in the form of terraces and contoured banks 3. Recent studies indicated that geomorphic-based mi...

show abstract

“…The samples were collected immediately (within 72 hours after plowing) and one month after the plowing operations (set up specifically to evaluate the effects of ploughing on soil physical parameters over time due to the modifications caused by climatic and environmental factors, especially the natural succession of wetting and drying cycles of the soil with subsequent progressive compaction) of the respective treatments. There is evidence that there are significant interactions between tillage and time for all properties, indicating that the tillage effect changes with time (Hu et al, 2018). Three randomly selected subsamples from tilled surface were collected from the entire plot.…”

Section: Soil Samplingmentioning

confidence: 99%

Response of selected physical properties of Fluvisols to tillage implements and frequencies at Haramaya, Eastern Ethiopia

LEMMA

TSEHAİ

Bedadi

2022

EJSS

View full text Add to dashboard Cite

The study was conducted to evaluate the effects of tillage implements and frequencies on selected physical properties of Fluvisols at Haramaya University, Eastern Ethiopia, during the 2013 cropping season. Soil bulk and particle density, total porosity, texture, and soil water retention were analyzed immediately (within 72 hours) and one month after tillage for samples collected from 0-20 and 20-40 cm depths. The experiment was laid out in a split-plot design with treatment combinations consisting of three levels of tillage frequencies (0, 2 and 4) and two tillage implements, oxen-drawn traditional Maresha and disc plows, with three replications. Results indicated that the mean bulk density values were significantly different (P < 0.05) at plow layers (0-20 cm). It ranged from 1.68 g cm-3 for disc plows at two passes to 1.72 g cm-3 for zero tillage and disc plows at four passes one month after tillage at a depth of 21-40 cm. Tillage with a disc plow at increased frequencies decreased total porosity, while oxen-drawn Maresha increased total porosity. Insignificant differences (P < 0.05) in mean values of particle size distribution were observed except for percent clay content immediately after tillage with disc plows at two passes, which showed significant highest mean value (26.30%). Tillage by traditional Maresha resulted in more water holding capacity at increased tillage frequencies. Tillage practice using disc plows at two passes significantly affected the bulk density, total porosity, and soil water retention characteristics. In conclusion, tillage implements and frequencies have shown a negative effect on the physical properties of Fluvisols by disrupting the structure of the soil at surface and subsurface depths, resulting in varying levels of impact on soil bulk density, total porosity, and soil water retention characteristics. Therefore, it is recommended to use the tillage implements at reduced frequencies for less disruption of soil properties while performing soil tilth for agricultural production.

show abstract

Short‐Term Dynamics of Soil Physical Properties as Affected by Compaction and Tillage in a Silt Loam Soil

Cited by 32 publications

References 71 publications

Hydraulic Properties in Different Soil Architectures of a Small Agricultural Watershed: Implications for Runoff Generation

Hydraulic Properties in Different Soil Architectures of a Small Agricultural Watershed: Implications for Runoff Generation

Erosion characteristics of different reclaimed substrates on iron tailings slopes under simulated rainfall

Response of selected physical properties of Fluvisols to tillage implements and frequencies at Haramaya, Eastern Ethiopia

Contact Info

Product

Resources

About