2005
DOI: 10.1016/j.geoderma.2004.08.006
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Variation in penetrometer resistance with soil properties: the contribution of effective stress and implications for pedotransfer functions

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Cited by 86 publications
(67 citation statements)
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“…However, below a particular soil water potential, the PR values tend to decrease with the reduction in the GWC due to the decrease in the effective stress and the formation of cracks beneath the penetrometer cone (MULQUEEN et al, 1977;TO & KAY, 2005), leading to the misinterpretation of PR values, as observed in this study (Figure 2d). Additionally, the soil strength is higher under lower GWC, making the PR evaluation difficult especially in compacted areas.…”
Section: -----------------------------------------------------10-mentioning
confidence: 55%
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“…However, below a particular soil water potential, the PR values tend to decrease with the reduction in the GWC due to the decrease in the effective stress and the formation of cracks beneath the penetrometer cone (MULQUEEN et al, 1977;TO & KAY, 2005), leading to the misinterpretation of PR values, as observed in this study (Figure 2d). Additionally, the soil strength is higher under lower GWC, making the PR evaluation difficult especially in compacted areas.…”
Section: -----------------------------------------------------10-mentioning
confidence: 55%
“…These cracks facilitate the cone movement through the soil, reducing the PR to inconsistent values taking into account the high compaction level of the NTC20. MULQUEEN et al (1977), andTO &KAY (2005) reported reductions in the PR values due to small vertical cracks resulting from cone displacement through soils with high BD and low water content.…”
Section: -----------------------------------------------------10-mentioning
confidence: 99%
“…These cracks, especially at the most negative water potential, may have resulted in lower PR L values in the densest samples, reducing the differences compared to samples with lower bulk density. To and Kay (2005) also observed that, under high Bd and low U, the formation of vertical cracks caused by cone penetration into the soil reduces PR.…”
Section: Discussionmentioning
confidence: 85%
“…Essa diferenciação, conforme o conteúdo de argila do solo, também foi observada por Sojka et al (2001), To & Kay (2005) e Almeida et al (2008). Assim, segundo Busscher et al (1997), são necessários ajustes separados para a curva de resistência do solo à penetração, conforme os diferentes tratamentos.…”
Section: Resultsunclassified
“…em que RP é a resistência do solo à penetração em MPa; a, b e c são parâmetros de ajuste do modelo; S é o índice de qualidade física; e σ é dado pela tensão efetiva (To & Kay, 2005;Whalley et al, 2005).…”
Section: Introductionunclassified