Guidelines for safe trafficking and cultivation, and resistance–density–moisture relations of three disturbed soils from Alberta

Mapfumo, E.; Chanasyk, D. S.

doi:10.1016/s0167-1987(98)00100-7

Cited by 46 publications

(27 citation statements)

References 24 publications

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“…Mapfumo and Chanasyk (1998) observed lower values of soil mechanical resistance for a clay loam soil packed to similar densities as the soils in our study. These authors used a large cone (basal area 3.2 cm 2 ) compared with the one we used (basal area 0.12 cm 2 ).…”

Section: Discussionsupporting

confidence: 57%

Soil compaction and water content as factors affecting the growth of lodgepole pine seedlings on sandy clay loam soil

Bulmer¹,

Simpson²

2005

Can. J. Soil. Sci.

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. 2005. Soil compaction and water content as factors affecting the growth of lodgepole pine seedlings on sandy clay loam soil. Can. J. Soil Sci. 85: 667-679. The response of lodgepole pine (Pinus contorta Dougl. var. latifolia Engelman.) seedlings to three levels of soil compaction and water content was evaluated in raised beds filled with a sandy clay loam soil. In compacted soils, seedling survival, height, root collar diameter and root growth were reduced. Soil water regime was adjusted with irrigation to levels associated with plant moisture stress (near wilting point) and limiting soil aeration (near 0.10 m 3 m -3 air-filled porosity). Soil water regime affected seedling performance, with higher survival, root collar diameter and root growth observed on treatments with higher water content. Compaction had detrimental effects on growth at all levels of soil water availability. Compaction and water content had strong effects on soil mechanical resistance. Limitations to seedling growth and survival were at least partly explained through their relationships with soil water content and soil mechanical resistance, and combinations of these factors as described by the least limiting water range concept. Le taux de survie, la hauteur de la plante, le diamètre du collet et la croissance des racines diminuent avec le compactage. On a ajusté le régime hydrique par irrigation afin d'obtenir la teneur en eau qui correspondait au stress hydrique pour l'espèce (près du stade de flétrissement) et on a réduit l'aération du sol (porosité de près de 0,10 m 3 d'air par mètre cube de sol). Le régime hydrique affecte le rendement des plantules avec une hausse du taux de survie, du diamètre du collet et de la croissance des racines quand l'apport d'eau est plus élevé. Le compactage entrave la croissance peu importe la teneur en eau. Le compactage et la teneur en eau du sol influent considérablement sur la résistance mécanique du sol. La croissance et le taux de survie plus faibles des plantules s'expliquent en partie par le lien entre ces facteurs et la teneur en eau ainsi que la résistance mécanique du sol. Suit une description de la combinaison de ces facteurs selon le principe de la fourchette des teneurs en eau la moins limitante. Mots clés:Compactage, propriétés physiques du sol, disponibilité d'eau, réaction de la croissance des plantes, fourchette des teneurs en eau la moins limitante

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Section: Discussionsupporting

confidence: 57%

Soil compaction and water content as factors affecting the growth of lodgepole pine seedlings on sandy clay loam soil

Bulmer¹,

Simpson²

2005

Can. J. Soil. Sci.

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“…This inconsistency minimized the effect of WBC amendment on PI values for the PS 2 -WBC or PS 3 -WBC-amendments. According to Mapfumo and Chanasyk (1998), a PI < 7 indicates low plasticity of a soil, whereas 7 < PI < 17 indicates medium plasticity, and PI > 17 indicates high plasticity. Unlike clay soils, which exhibit high plasticity and are therefore highly prone to compaction, the slit loam used in this study exhibited medium plasticity and was therefore -given the narrow moisture range within which deformation could occur -less prone to severe compaction.…”

Section: Resultsmentioning

confidence: 99%

Influence of wood-derived biochar on the compactibility and strength of silt loam soil

Ahmed¹,

Gariépy²,

Raghavan³

2017

International Agrophysics

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A b s t r a c t. Biochar is proven to enhance soil fertility and increase crop productivity. Given that the influence of biochar on soil compaction remains unclear, selected physico-mechanical properties of soil amended with wood-derived biochar were assessed. For unamended silt loam, the bulk density, maximum bulk density, optimum moisture content, plastic limit, liquid limit, and plasticity index were 1.05 Mg m -3 , 1.69 Mg m -3 , 16.55, 17.1, 29.3, and 12.2%, respectively. The penetration resistance and shear strength of the unamended silt loam compacted in the standard compaction Proctor mold and at its optimum moisture content were 1800 kPa and 850 kPa, respectively. Results from amending the silt loam with 10% particle size ranges (0.5-212 µm) led to relative decreases of 18.1, 17.75, 66.66, and 97.4% in bulk density, maximum bulk density, penetration resistance, and shear strength, respectively; a 26.8% relative increase in optimum moisture content; along with absolute increases in plastic limit, liquid limit, and plasticity index of 5.3, 13.7, and 8.4%, respectively. While the biochar-amended silt loam soil was more susceptible to compaction, however, soil mechanical impedance enhanced.

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“…The critical moisture content (CMC) for greatest soil compaction risk has been reported by Dahwood et al (1999Dahwood et al ( ), betteridge et al (1999 and Mapfumo & Chanasyk (1998) as below both field capacity and plastic limit for fine textured soils with a low organic carbon content. For our trial, 10 spring grazing events when the antecedent soil moisture was greater than the plastic limit (39% v/v), were likely to be contributing to soil treading damage.…”

Section: Practical Implicationsmentioning

confidence: 91%

Grazing strategies to protect soil physical properties and maximise pasture yield on a Southland dairy farm

Houlbrooke¹,

Drewry²,

Monaghan³

et al. 2009

New Zealand Journal of Agricultural Research

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intensive dairy cattle grazing on wet soil can have a detrimental effect on soil physical quality and consequently on pasture production. Soil physical properties (porosity, bulk density, saturated hydraulic conductivity) of a Pallic soil (Pukemutu silt loam) and pasture production were assessed on a dairy farm in Southland, New Zealand, under a number of different cattle grazing strategies: (i) normal grazing management on undrained land, (ii) normal grazing practice on drained land, (iii) restricted autumn grazing, (iv) restricted grazing when soil conditions were wet, (v) never pugged, and (vi) never grazed. a hand-pushed cone penetrometer determined treatments (iv) and (v). Soil macroporosity was significantly greater (P < 0.05) on the never grazed plot than all other treatments at post-spring sampling each year. There were no significant differences in any soil physical properties measured on cattle grazed treatments. Spring pasture yield from the never grazed treatment was greater (P < 0.05) than the drained and undrained standard practice grazing treatments for one of the three seasons. The lack of treatment differences in soil physical properties and pasture yield from grazing treatments suggests that the never pugged grazing strategy failed to prevent soil compaction by dairy cows. To some extent this is expected as soil compaction occurs at soil water contents lower than the thresholds for pugging damage. However, the large number of grazing events when soil conditions were considered safe according to the never pugged treatment protocol, but when soil water content was greater than the plastic limit, probably contributed to both soil treading damage and compaction during the traditionally wet early spring period.

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Guidelines for safe trafficking and cultivation, and resistance–density–moisture relations of three disturbed soils from Alberta

Cited by 46 publications

References 24 publications

Soil compaction and water content as factors affecting the growth of lodgepole pine seedlings on sandy clay loam soil

Soil compaction and water content as factors affecting the growth of lodgepole pine seedlings on sandy clay loam soil

Influence of wood-derived biochar on the compactibility and strength of silt loam soil

Grazing strategies to protect soil physical properties and maximise pasture yield on a Southland dairy farm

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