Modeling and correction of soil penetration resistance for varying soil water content

Vaz, C. M. P.; Manieri, Juliana M.; Maria, Isabella Clerici De; Tuller, Markus

doi:10.1016/j.geoderma.2011.07.016

Cited by 159 publications

(145 citation statements)

References 39 publications

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“…Besides these factors, the determination of SPR values depends on soil bulk density (Db) (OTTO et al, 2011), water content in the soil (ASSIS et al, 2009;FIGUEIREDO et al, 2011;MORAES et al, 2012), soil pore-water pressure (FREUDLUND et al, 1978;KIM et al, 2008), particle size distribution (VAZ et al, 2011), clay content (MOLIN et al, 2006, soil type (SILVA et al, 2004), soil compressibility , and soil-metal friction (DEXTER et al, 2007).…”

Section: Review Penetrometrymentioning

confidence: 99%

“…These authors describe the behavior of the shear strength of saturated and unsaturated soils, and the results show that the decrease in water pressure in the soil pores increases the soil frictional resistance. This exponential increase of the SPR values according to the soil water content restricts comparisons among same soils with different moisture contents; this occurs because a small decrease or increase in this parameter results in a large increase or decrease in SPR values (VAZ et al, 2011), resulting in under or overestimation of the soil compaction state (MORAES et al, 2012). In order to overcome this problem, MORAES et al (2012) suggest the correction of the SPR values according to a water content of the reference soil.…”

Section: Penetrometer Models and Their Qualitiesmentioning

confidence: 99%

“…Dynamic penetrometers are those with the greatest ranges of readings for the evaluation of SPR values in the field, varying from zero to more than 20 MPa (VAZ et al, 2011;MORAES et al, 2012). Static penetrometers and penetrographs of manual insertion provide field measurements of SPR values up to 5 MPa (ASABE, 2006b).…”

Section: Before Impact After Impactmentioning

confidence: 99%

“…Determinations of SPR values depend on the soil water content at the evaluation time, as there are exponential increments in SPR values due to the reduction of the soil water content (VAZ et al, 2011;MORAES et al, 2012). Differences in soil compaction may also be masked due to variations of the soil water content (MORAES et al, 2012).…”

Section: Relationship Between Root Growth and Penetration Resistancementioning

confidence: 99%

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Use of penetrometers in agriculture: a review

et al. 2014

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Soil physical quality can be easily and quickly evaluated by using simple equipment to identify levels of soil compaction. Hence, it is necessary to know the variables responsible for changes in the soil penetration resistance (SPR). The aim of this review is to identify the main factors related to the various equipment used for assessing SPR as a soil physical quality indicator in agriculture. This literature review describes the different types of equipment used and its relationship with SPR. A wide range of procedures, devices, and equipments are available. Much of variability in SPR results is related to the equipment model, cone angle and diameter, and penetration rate. Usually, restrictions to root growth are correlated with SPR values above 2-3 MPa. However, comparisons of SPR values obtained under different soil moisture regimes in the same soil type have provided conflicting results of difficult interpretation. In order to minimize these problems, there is a need for standardization of measurement procedures and interpretation, and/or correction of SPR values according to a soil water content of reference.

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Section: Review Penetrometrymentioning

confidence: 99%

Section: Penetrometer Models and Their Qualitiesmentioning

confidence: 99%

Section: Before Impact After Impactmentioning

confidence: 99%

Section: Relationship Between Root Growth and Penetration Resistancementioning

confidence: 99%

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Use of penetrometers in agriculture: a review

et al. 2014

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“…Vaz et al (2011) pointed out that the penetration resistance increases in soil containing high clay. According to Dexter et al (2006), sandy clay soil has a higher penetration resistance compared to loamy sand soil.…”

Section: Soil Physical Properties and Soil Organic Matter Statusmentioning

confidence: 99%

Soil organic matter status and penetration resistance at alley cropping system on degraded acid dryland

Yustika

Muchtar

2016

J.Degrade.Min.Land Manage.

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Abstract:Soil has important functions, one of which acts as a growing medium for plants so the soil environment should be able to support the growth and development of the plants in taking water and nutrient needs. The purpose of this study was to elucidate the effect of alley cropping on improvement of soil organic C status, and its impact on soil penetration. Observations of soil organic C status were done in 2008, 2011, and 2014, while observations of soil bulk density, C/N ratio, and penetration were conducted in 2014. Soil penetration was measured using penetrologger. Alley cropping systems applied were Flemingia congesta, Leucaena glauca, and Gliricida sepium. The results showed that the presence of hedgerow trees in alley cropping systems could supply organic materials periodically and could increase the content of organic C. The results of measurements of soil penetration in the surface layer (0-5 cm) showed low penetration values. The penetration value increased with increasing soil depth with the highest penetration value was at the depth of 15 cm.

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Dense subsoils limit winter wheat rooting depth and soil water depletion

et al. 2020

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Dense subsoils pose a challenge to dryland winter wheat (Triticum aestivum L.) production in the Palouse region of the semiarid northwestern United States. Subsoils, commonly fragipans and argillic horizons, may restrict root growth and limit crop access to critical stored soil water, but this phenomenon is not well characterized in the Palouse. During the 2017–2018 growing season, an on‐farm study of soil profiles in two commercial winter wheat fields in eastern Washington and northern Idaho was established to observe the effects of soil bulk density on winter wheat root system depth and subsoil water depletion. At harvest, grain yield, root density, soil bulk density, and postharvest soil water and nitrogen content were measured to 120 cm at 15‐cm segments in the profile. Root‐restrictive depth (RRD) was defined as the depth where root density was less than or equal to 0.25 intersections cm−2 cross‐sectional area. Soil bulk density negatively affected root density and consequently increased the probability of shallow RRD. Shallow RRD was common, with 38% of profiles having RRD less than or equal to 105 cm. Postharvest soil‐water content at the bottom of the measured profile (105–120 cm) was 41% higher in profiles with RRD of 90 cm than nonrestricted profiles. Yield declined with increase in postharvest soil water content at 105–120 cm depth. Findings indicate that dense subsoils can reduce stored soil water depletion by limiting root density and root system depth that, in turn, limits yield.

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Modeling and correction of soil penetration resistance for varying soil water content

Cited by 159 publications

References 39 publications

Use of penetrometers in agriculture: a review

Use of penetrometers in agriculture: a review

Soil organic matter status and penetration resistance at alley cropping system on degraded acid dryland

Dense subsoils limit winter wheat rooting depth and soil water depletion

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