The long-term effects of silvicultural thinning and partial cutting on soil compaction in red pine (Pinus resinosa Ait.) and northern hardwood stands in the northern Great Lakes Region of the United States

2008 ◽  
Vol 88 (5) ◽  
pp. 849-857 ◽  
Author(s):  
R A Tarpey ◽  
M F Jurgensen ◽  
B J Palik ◽  
R K Kolka
Keyword(s):  
Hydraulic Conductivity ◽  
Bulk Density ◽  
Soil Compaction ◽  
Basal Area ◽  
Penetration Resistance ◽  
Saturated Hydraulic Conductivity ◽  
Red Pine ◽  
North Central ◽  
Soil Penetration Resistance

Periodic silvicultural thinnings (23.0, 27.6, 32.1 m2 ha-1 residual basal area) in a red pine stand growing on a sandy soil in north-central Minnesota over a 57-yr period increased soil compaction as the intensity of the thinning treatment increased. Of the three different methods used to measure soil compaction (bulk density, penetration resistance, and saturated hydraulic conductivity), saturated hydraulic conductivity was the most sensitive, decreasing by 60% in the 23.0 m2 ha-1 basal area thinning treatment, as compared with the uncut control. Soil bulk density measurements were more variable, but generally increased with increased thinning intensity. Few differences in soil penetration resistance were found among the three thinning treatments. In contrast, no evidence of soil compaction was detected in a northern hardwoods stand growing on a rocky loam soil in north-central Wisconsin that had three thinning treatments (13.8, 17.2, 20.6 m2 ha-1 residual basal area), a two- stage shelterwood harvest, and a 20-cm-diameter limit cut over a 50-yr period. With the increased demand for forest products, fuel reduction operations in high fire-risk stands, and biomass removal for energy production, more information is needed on the impact of multiple stand entries on soil compaction, and if compaction occurs, whether it will affect long-term soil productivity. Key words: Soil physical properties, bulk density, soil penetration resistance, hydraulic conductivity

Effects of tractor traffic on soil compaction, water infiltration and soil erosion in tilled and grassed vineyards

2020 ◽  
Author(s):  
Marcella Biddoccu ◽  
Giorgio Capello ◽  
Eugenio Cavallo
Keyword(s):  
Hydraulic Conductivity ◽  
Soil Erosion ◽  
Water Content ◽  
Bulk Density ◽  
Soil Compaction ◽  
Penetration Resistance ◽  
Water Infiltration ◽  
Grass Cover ◽  
Soil Penetration Resistance ◽  
Tillage Operation

<p>Soil erosion is affected by rainfall temporal pattern and intensity variability. In vineyards, machines traffic is implemented with particular intensity from late spring to harvest, and it is responsible of soil compaction, that likely affects soil hydraulic properties, runoff, and soil erosion. Additionally, hydraulic and physical properties of soil are highly influenced by vineyards’ inter-rows soil management. The effect of machines traffic on soil compaction, hydrological and erosional processes has been investigated on a sloping vineyards with different inter-row soil managements (tillage and permanent grass cover) in the Alto Monferrato area (Piedmont, NW Italy). During the investigation (November 2016 – October 2018) soil water content, rainfall, runoff, and soil erosion were continuously monitored. Field-saturated hydraulic conductivity (Kfs), soil penetration resistance (PR) and bulk density (BD) were recorded periodically in portions of inter-rows affected and not by the machine traffic. In order to take into account temporal and management variability of soil compaction and hydrological properties, field-monitored data were statistically analysed, in order to identify existing relationships between climate and management variables and soil physical and hydrological variables. Very different yearly precipitation characterized the observed period, leading to higher bulk density and lower infiltration rates were in the wetter year, especially in the tilled vineyard, whereas soil penetration resistance was generally higher in the grassed plot, and in drier conditions. Soil bulk density and penetration resistance in tracked soil of the tilled plot increase, compared to the grassed plot, after only one to three tractor passages following tillage operation, especially in the topsoil (first 10 cm). Soil compaction affects water infiltration, especially in the wet year. In the tilled vineyard, one tractor passage on wet soil after tillage operation dramatically reduced Kfs from over 1000 to near 1 mm h<sup>-</sup><sup>1</sup>, while with grass cover Kfs remained above the usual rain-intensity values, allowing water to infiltrate the soil. By means of linear and multilinear regression, significant relationships have been found to relate hydraulic conductivity and soil penetration resistance with soil water content, weather variables and a factor that takes into account the number of tractor passages and the elapsed time from last soil disturbance. Lastly, runoff and soil erosion were higher in the tilled plot, even if lower than the long-period average values. Indeed, in the wet year, management with grass cover reduced considerably runoff (-76%) and soil loss (-83%) compared to tillage and, in the dry season.</p>

Temporal trends in soil properties at a soil quality benchmark site in the Lower Fraser Valley, British Columbia

2002 ◽  
Vol 82 (4) ◽  
pp. 499-509 ◽  
Author(s):  
E A Kenney ◽  
J W Hall ◽  
C. Wang
Keyword(s):  
British Columbia ◽  
Hydraulic Conductivity ◽  
Soil Properties ◽  
Bulk Density ◽  
Soil Quality ◽  
Soil Compaction ◽  
C:N Ratio ◽  
Penetration Resistance ◽  
Saturated Hydraulic Conductivity ◽  
Total N

A national soil quality monitoring program was established in 1990 to address concerns that the quality of Canada's agricultural soils was in decline. The British Columbia benchmark site (01-BC) was established in 1991 and is located on the Pelly soil series (Orthic Humic Gleysol) supporting a corn-forage-pasture rotation in the Lower Mainland ecoregion. The objectives of this study were to report on the differences in: (1) the measured soil properties for the 5-yr period between baseline data collection in 1991 and resampling in 1996 and (2) the properties measured annually as indicators of soil compaction. A 25-m (25-m grid was used at the site to locate sampling points for bulk density and collecting soil samples of the Ap, BCg, and Cg horizons, as well as the measurement locations for saturated hydraulic conductivity and penetration resistance. A 5-yr interval sampling regime was used to sample the Ap, BCg, and Cg horizons and bulk density. Saturated hydraulic conductivity and penetration resistance were sampled annually from 1992 to 1998. Between 1991 and 1996 in the A horizons, pH, available P, C:N ratio and bulk density increased by 4.6, 7.8, 2.5, and 8%, respectively, and available K, total C and total N decreased by 21, 16.5, and 18.3%, respectively. In the BCg horizon, pH, available P and C:N ratio increased by 5, 126, and 8%, respectively, and the available K and total N both decreased by 21%. Bulk density remained unchanged. The assumption that the soil chemical properties in the Cg horizon would remain stable during the study period did not hold. The trends detected for the Cg horizon were similar to those measured for the upper two horizons. However, only the reductions in available K and total N and increases in C:N were significant. The changes in the soil physical properties measured at this site indicate that some soil compaction has occurred. Both bulk density at 20 cm and penetration resistance increased at all depths between 1994 and 1998, which coincided with the time period that grazing was included in the crop rotation. Field saturated hydraulic conductivity at 25 cm (Ap2 horizon), although highly variable from year to year also tended to be lower during the pasture rotation. The penetration resistance measurements, which detected changes at all depths, appeared to be a more sensitive indicator of soil compaction than either bulk density or field saturated hydraulic conductivity. Key words: Soil quality, soil monitoring, soil properties, soil compaction, temporal change

Soil compaction under varying rest periods and levels of mechanical disturbance in a rotational grazing system

2011 ◽  
Vol 91 (6) ◽  
pp. 957-964 ◽  
Author(s):  
C. Halde ◽  
A. M. Hammermeister ◽  
N. L. Mclean ◽  
K. T. Webb ◽  
R. C. Martin
Keyword(s):  
Bulk Density ◽  
Soil Compaction ◽  
Penetration Resistance ◽  
Soil Bulk Density ◽  
Intensive Treatment ◽  
Rotational Grazing ◽  
Pasture Management ◽  
Soil Penetration Resistance ◽  
Rest Periods ◽  
Grazing System

Halde, C., Hammermeister, A. M., McLean, N. L., Webb, K. T. and Martin, R. C. 2011. Soil compaction under varying rest periods and levels of mechanical disturbance in a rotational grazing system. Can. J. Soil Sci. 91: 957–964. In Atlantic Canada, data are limited regarding the effect of grazing systems on soil compaction. The objective of the study was to determine the effect of intensive and extensive rotational pasture management treatments on soil bulk density, soil penetration resistance, forage productivity and litter accumulation. The study was conducted on a fine sandy loam pasture in Truro, Nova Scotia. Each of the eight paddocks was divided into three rotational pasture management treatments: intensive, semi-intensive and extensive. Mowing and clipping were more frequent in the intensive than in the semi-intensive treatment. In the extensive treatment, by virtue of grazing in alternate rotations, the rest period was doubled than that of the intensive and semi-intensive treatments. Both soil bulk density (0–5 cm) and penetration resistance (0–25.5 cm) were significantly higher in the intensive treatment than in the extensive treatment, for all seasons. Over winter, bulk density decreased significantly by 6.8 and 3.8% at 0–5 and 5–10 cm, respectively. A decrease ranging between 40.5 and 4.0% was observed for soil penetration resistance over winter, at 0–1.5 cm and 24.0–25.5 cm, respectively. The intensive and semi-intensive treatments produced significantly more available forage for grazers annually than the extensive treatment. Forage yields in late May to early June were negatively correlated with spring bulk density.

scholarly journals Effects of Tractor Passes on Hydrological and Soil Erosion Processes in Tilled and Grassed Vineyards

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2118 ◽  
Author(s):  
Giorgio Capello ◽  
Marcella Biddoccu ◽  
Stefano Ferraris ◽  
Eugenio Cavallo
Keyword(s):  
Soil Erosion ◽  
Bulk Density ◽  
Soil Compaction ◽  
Penetration Resistance ◽  
Grass Cover ◽  
Negative Effects ◽  
Infiltration Rates ◽  
Erosion Processes ◽  
Soil Penetration Resistance ◽  
Nw Italy

Soil erosion is affected by rainfall temporal patterns and intensity variability. In vineyards, machine traffic is implemented with particular intensity from late spring to harvest, and it is responsible for soil compaction, which likely affects soil hydraulic properties, runoff, and soil erosion. Additionally, the hydraulic and physical properties of soil are highly influenced by vineyards’ inter-rows soil management. The effects on soil compaction and both hydrological and erosional processes of machine traffic were investigated on a sloping vineyard with different inter-row soil managements (tillage and permanent grass cover) in the Alto Monferrato area (Piedmont, NW Italy). During the investigation (November 2016–October 2018), soil water content, rainfall, runoff, and soil erosion were continuously monitored. Field-saturated hydraulic conductivity, soil penetration resistance, and bulk density were recorded periodically in portions of inter-rows affected and not affected by the machine traffic. Very different yearly precipitation characterized the observed period, leading to higher bulk density and lower infiltration rates in the wetter year, especially in the tilled vineyard, whereas soil penetration resistance was generally higher in the grassed plot and in drier conditions. In the wet year, management with grass cover considerably reduced runoff (−76%) and soil loss (−83%) compared to tillage and in the dry season. Those results highlight the need to limit the tractor traffic, in order to reduce negative effects due to soil compaction, especially in tilled inter-rows.

The effects of soil water content and bulk density on the compactibility and soil penetration resistance of some Western Australian sandy soils

Soil Research ◽  
1988 ◽  
Vol 26 (2) ◽  
pp. 391 ◽  
Author(s):  
C Henderson ◽  
A Levett ◽  
D Lisle
Keyword(s):  
Water Content ◽  
Bulk Density ◽  
Soil Water ◽  
Soil Water Content ◽  
Soil Compaction ◽  
Field Capacity ◽  
Penetration Resistance ◽  
Coarse Sand ◽  
Soil Penetration Resistance ◽  
Compactive Effort

Quantitative models to predict the effects of soil compaction on wheat yields are being developed for the northern sandplains of Western Australia. An understanding of the relationships between soil water content (W), bulk density (p), compactibility and soil penetration resistance (P) is required. Thirteen subsoils from W.A. sandplain soils were tested for compactibility. As the amounts of very coarse sand or clay in the soil increased, the maximum density (�max.) achieved with a standard compactive effort also increased, while the critical soil water content (Wcrit,.) for maximum compactibility declined. The effects of p and W on P were investigated for five of the soils. The value of P was only slightly affected as W was reduced to less than 70% of the field capacity water content. As the soils were dried further, P increased exponentially. At all water contents, an increase in p was found to markedly increase P. Particle size distribution could be used to predict �max. and Wcrit., but could not be related to the effects of changes in p and W on P. The implications for the measurement and effects of soil compaction in the field are discussed.

scholarly journals INFLUÊNCIA DA PEDOFORMA NA VARIABILIDADE ESPACIAL DE ALGUNS ATRIBUTOS FÍSICOS E HÍDRICOS DE UM LATOSSOLO SOB CULTIVO DE CANA-DE-AÇÚCAR

Irriga ◽  
2004 ◽  
Vol 9 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Zigomar Menezes de Souza ◽  
José Marques Júnior ◽  
Gener Tadeu Pereira ◽  
Luis Fernando Moreira
Keyword(s):  
Soil Moisture ◽  
Hydraulic Conductivity ◽  
Spatial Variability ◽  
Spatial Dependence ◽  
Penetration Resistance ◽  
Conventional Tillage ◽  
Saturated Hydraulic Conductivity ◽  
Soil Penetration Resistance ◽  
Occurrence Patterns ◽  
Very High

INFLUÊNCIA DA PEDOFORMA NA VARIABILIDADE ESPACIAL DE ALGUNS ATRIBUTOS FÍSICOS E HÍDRICOS DE UM LATOSSOLO SOB CULTIVO DE CANA-DE-AÇÚCAR[1]   Zigomar Menezes de Souza;  José Marques Júnior; Gener Tadeu Pereira; Luis Fernando MoreiraDepartamento de Solos e Adubos, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP,  [email protected]  1 RESUMO  O presente trabalho teve como objetivo avaliar a variabilidade espacial da condutividade hidráulica do solo saturado, resistência do solo à penetração e teor de água de um Latossolo Vermelho eutroférrico sob cultivo de cana de açúcar, utilizando-se métodos da estatística clássica, análises geoestatística e técnicas de interpolação de dados, com a finalidade de observar padrões de ocorrência destes atributos na paisagem. Foram feitas amostragens de solo nas profundidades de 0,0-0,2 m e 0,2-0,4 m, nos pontos de cruzamento de uma malha, com intervalos regulares de 10 m, perfazendo um total de 100 pontos. Os valores do coeficiente de variação para os dados apresentaram-se desde baixos (teor de água do solo), alto (resistência do solo à penetração) e muito alto (condutividade hidráulica do solo saturado). Observou-se a ocorrência de dependência espacial de todas as variáveis estudadas, com os maiores alcances na profundidade de 0,2-0,4 m. As variáveis condutividade hidráulica do solo saturado e teor de água do solo apresentaram grau moderado de dependência espacial, a resistência à penetração teve forte grau de dependência espacial. Pequenas variações nas formas do relevo condicionam variabilidade diferenciada para atributos físicos do solo.  UNITERMOS: geoestatística, krigagem, condutividade hidráulica do solo saturado, resistência do solo à penetração.   SOUZA, Z. M. de; MARQUES JUNIOR, J.; PEREIRA, G. T.; MOREIRA, L. F. INFLUENCE OF THE LANDSCAPE IN THE SPATIAL VARIABILITY OF THE HYDRAULIC CONDUCTIVITY, PENETRATION RESISTANCE AND SOIL MOISTURE IN THE SUGAR CANE CROP  2 ABSTRACT     The objective of this work was to evaluate spatial variability of saturated hydraulic conductivity, soil resistance to penetration and soil moisture in an area where sugarcane was planted under conventional tillage, using classic statistical methods, geostatistical analyses and data interpolation techniques, to assess occurrence patterns of these characteristics in the landscape. Soil was sampled depths of 0.0-0.2 m and 0.2-0.4 m, collected in intersections of a regular grid, with intervals of 10 m, in a total of 100 sampling points. Variation Coefficient (VC) were low for soil moisture, high soil for penetration resistance and very high for saturated hydraulic conductivity. All variables showed spatial dependence and the largest ones for depth of 0.2-0.4 m. Saturated hydraulic conductivity and soil moisture presented moderate spatial dependence, soil penetration resistance showed strong spatial dependence. Small variations in the landscape forms can define different spatial variability found for the physical characteristics of the soil.  KEYWORDS: geostatistics, kriging, saturated hydraulic conductivity, soil penetration resistance. 

What is the optimal level of soil organic matter in tropical climates to prevent soil degradation?

2020 ◽  
Author(s):  
Christian Guzman ◽  
Tigist Tebebu ◽  
Fasikaw Zimale ◽  
Tammo Steenhuis
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Hydraulic Conductivity ◽  
Bulk Density ◽  
Soil Texture ◽  
Fine Particles ◽  
Penetration Resistance ◽  
Optimal Level ◽  
Soil Penetration Resistance ◽  
Lower Bulk Density

<p>Land degradation emerges when a critical component of productive land begins to diminish beyond a threshold. In tropical soils, organic matter may vary depending on the local climatic conditions and production of litter and organic materials and furthermore drastic changes in land use may be responsible for changes in organic matter which coincides with soil physical changes. In two research regions in mountainous (sub) humid conditions, organic matter was measured alongside surface and profile characteristics. In the Ethiopian Highlands, we measured organic matter, soil penetration resistance, soil texture, pH, and bulk density in three land use classifications (native forests, pasture lands, croplands).  In this region, soil in cropped regions and pasturelands had organic matter roughly below 4 %, had greater soil penetration resistance, lower pH (more acidic), and had greater bulk density. Soils in the native forests had organic matter roughly between the range of 4% to 12 % with lower soil penetration resistance, higher pH (less acidic) and lower bulk density.</p><p>The soils were investigated in the Andean region of the southwest of Colombia were analyzed for organic matter, hydraulic conductivity, soil texture, pH, and bulk density across two main land use classifications (native- and regenerated-forests and cultivated and pastureland). Soils in the cropped and pasturelands had organic matter around 4.8%, with low saturated hydraulic conductivity, greater fraction of fine particles, lower pH (more acidic), and greater bulk density. Soils in the native and regenerated forest cover had organic matter between 5 to 7%, with greater saturated hydraulic conductivity, lower fraction of fine particles, higher pH (less acidic), and a lower bulk density. While a universal optimal level of soil organic matter may not be applicable across various tropical regions, there are distinct changes that are consistent when organic matter falls below a regional threshold including increased compaction, acidity, and shifting of soil texture.  </p>

A comparison of rubber-tyred and steel-tracked skidders on forest soil physical properties

Soil Research ◽  
2003 ◽  
Vol 41 (6) ◽  
pp. 1063 ◽  
Author(s):  
G. J. Sheridan
Keyword(s):  
Hydraulic Conductivity ◽  
Bulk Density ◽  
Forest Soil ◽  
Penetration Resistance ◽  
Soil Bulk Density ◽  
Saturated Hydraulic Conductivity ◽  
Rainfall Simulation ◽  
Silty Clay ◽  
Log Skidding ◽  
Experimental Treatments

Compaction of a silty clay loam forest soil was compared for 2 types of log-skidding equipment, a rubber-tyred skidder and a flexible-steel-tracked skidder. Experiments involved the loaded skidders traversing marked laneways at zero, 2, 4, and 10 passes. Compaction was quantified in terms of 3 parameters: (1) bulk density to 25 cm depth measured gravimetrically, (2) penetration resistance using a field penetrometer, and (3) saturated hydraulic conductivity using a field rainfall simulator. Results showed no substantial difference in soil bulk density between the experimental treatments, regardless of skidder type or number passes. Penetration resistance of the traversed laneways was significantly higher than the surrounding undisturbed areas; however, there was no difference between skidder type. Rainfall simulation showed that the saturated hydraulic conductivity of all treatments was strongly reduced by trafficking, although this did not differ with skidder type. The results from this study highlight the dangers in assuming that reduced machine static ground pressures will automatically lead to reduced soil impacts. It is important to note that while this study did not find differences between the 2 skidder types when operated in a similar manner, differences in the operation of the two skidders may also influence impacts on soil properties.

scholarly journals Effects of machinery trafficking in an agricultural soil assessed by Electrical Resistivity Tomography (ERT)

2018 ◽  
Vol 3 (1) ◽  
pp. 378-385 ◽  
Author(s):  
Aitor García-Tomillo ◽  
Tomás de Figueiredo ◽  
Jorge Dafonte Dafonte ◽  
Arlindo Almeida ◽  
Antonio Paz-González
Keyword(s):  
Electrical Resistivity ◽  
Hydraulic Conductivity ◽  
Bulk Density ◽  
Soil Compaction ◽  
Electrical Resistivity Tomography ◽  
Soil Bulk Density ◽  
Saturated Hydraulic Conductivity ◽  
Soil Horizon ◽  
Resistivity Tomography ◽  
Before And After

Abstract Soil compaction is a serious problem, which is aggravated due to its difficulty to locate and reverse. Electrical resistivity tomography (ERT) is a non-invasive geophysical method that can be used to identify compacted areas, soil horizon thickness and assess soil physical properties. This study assesses the relationship between ERT and soil compaction. Data were collected on a 4-m transect in a fallow plot located at Braganca (Portugal). Measurements were performed before and after tillage and tractor passage. Soil samples at different depths (0-0.05, 0.05-0.1 and 0.1-0.2 m depth) were taken to determine: soil bulk density, porosity, saturated hydraulic conductivity and soil water content. The effect of tillage and tractor passage was more significant on the first 0.05 m depth. In the wheel track areas, ERT suffered a reduction of about 40%, saturated hydraulic conductivity decreased by 70% and bulk density increased by 24%. These results proved that ERT can be a useful tool for assessing soil compaction.

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