Changes in the properties of a Vertisol and responses of wheat after compaction with harvester traffic

Radford, BJ; Bridge, BJ; Davis, R. J.; McGarry, D.; Pillai, Usha P. P.; Rickman, J.F; Walsh, PA; Yule, D. F.

doi:10.1016/s0167-1987(00)00091-x

Cited by 79 publications

(51 citation statements)

References 28 publications

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“…Specifically, physical subsoil constraints result in low porosity restricting the rate of water and nutrient uptake whereas high soil strength inhibits root elongation and expansion thereby reducing water availability for transpiration (Radford et al 2000).…”

Section: Subsoil Compaction and Inherently Dense Subsoil Matrixmentioning

confidence: 99%

“…A progressive subsoil compaction is the result of increases in the weight of farm machinery operating on the farm. Considerable evidence exists to show that surface and subsoil compaction exerts an enormous impact on establishment, root penetration, growth and yield of crops, and it persists for a long time (Radford et al 2000;Radford et al 2001). Surface compaction can be alleviated by tillage, whereas amelioration of subsurface compaction usually requires natural processes, such as drying and wetting, or biological activity (Pillai and McGarry 1999).…”

Section: Physical Constraintsmentioning

confidence: 99%

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Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: an overview

Dang¹,

Dalal²,

Routley³

et al. 2006

Aust. J. Exp. Agric.

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Section: Subsoil Compaction and Inherently Dense Subsoil Matrixmentioning

confidence: 99%

Section: Physical Constraintsmentioning

confidence: 99%

Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: an overview

Dang¹,

Dalal²,

Routley³

et al. 2006

Aust. J. Exp. Agric.

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“…Increasing nitrogen might have increased leaf area of the plant and therefore increased cover ratios might have reduced the solar radiation over soil surface and consequently caused to have lower temperatures. Several researchers indicated that soil compaction was a process that alters the structure of cultivated soils by increasing soil bulk density, decreasing porosity and causing a shift in pore space, aggregate shapes and size distribution (Flowers and Lal, 1998;Radford et al, 2000;Richard et al, 2001;Pagliai et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

Soil characteristics of soybean fields as effected by compaction, irrigation and fertilization.

Kırnak

Gökalp

Doðan

et al. 2017

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Soil physical characteristics (penetration resistance, bulk density, temperature, moisture content) and nutrient contents (nitrogen, phosphorus, potassium) were investigated for soybean grown in Turkey under three different compaction levels (control, low compaction, high compaction), two different irrigation management systems (conventional and alternate furrow irrigation) and three different nitrogen levels (60, 90, 120 kg ha -1 ). Penetration resistances exhibited distinctive increase in high-compaction case of conventional and alternate furrow irrigation systems. Effects of all treatments on bulk density were found to be significant. Only the nitrogen doses had significant effects on leaf P and K contents at p<0.05 level. Soil compaction had significant effects on soil nutrient contents of all depths except 0-30 cm layer (p<0.01). Effects of compaction on soil temperature were insignificant at 10 cm but were significant at 30 cm. Results indicated that negative impacts of soil compaction could be eliminated with proper irrigation and fertilization implementations.

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“…It has been shown that especially the largest pores, also called structural pores (Fies, 1971), are eliminated by compaction (Guérif, 1987;Pagliai, 1987), thereby increasing the proportion of small pores, causing a flattening of the soil water retention curve (Assouline et al, 1997), due to a changing pore geometry. This reduction of porosity causes a decrease in the saturated hydraulic conductivity (Pagliai et al, 2000;Lin et al, 1996) and the soil drainage capacity (Voorhees et al, 1986;Radford et al, 2000;Arvidsson, 2001;House et al, 2001) as well as an increase of soil bulk density (Pagliai et al, 2004). Due to a reduction of permeability, subsoil compaction can cause the formation of a perched water table near to the soil surface, which may result in an increase of surface runoff (saturation excess runoff) and subsurface flow, both promoting soil erosion, as reported by Fullen (1985) for a loamy sand in east Shropshire, England.…”

Section: Introductionmentioning

confidence: 99%

The influence of a compacted plow sole on saturation excess runoff

Verbist

Cornelis

Schiettecatte

et al. 2007

Soil and Tillage Research

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Subsoil compaction due to conventional tillage techniques and its relation to subsurface flow and runoff was investigated on a sloped field. The presence of a plow sole was confirmed by significantly higher penetration resistances between 20 and 40 cm depth, a significantly higher soil bulk density and a 14% decrease in drainage pore space compared to the top layer. Ring infiltrometer measurements also confirmed a significant reduction of the saturated hydraulic conductivity at 30 cm depth, indicating a limited permeability. With the use of an extensive grid of tensiometers, matric heads were monitored and the occurrence of a temporary water table on top of the plow sole was confirmed in a number of cases. Equipotential lines in the top saturated layer indicated the occurrence of subsurface flow parallel to the slope surface in a downward direction. For the whole measuring period, when a perched water table was observed, 91% of the rainfall events caused runoff and this number increased with increasing rainfall intensity. For low and medium rainfall intensities (<10 mm h À1 ), 66% and 63% of the runoff events were related to saturation of the top soil. Therefore, it was concluded that over a period of 20 months saturation excess runoff as a result of subsoil compaction was an important contributor to surface runoff and soil loss. #

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Changes in the properties of a Vertisol and responses of wheat after compaction with harvester traffic

Cited by 79 publications

References 28 publications

Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: an overview

Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: an overview

Soil characteristics of soybean fields as effected by compaction, irrigation and fertilization.

The influence of a compacted plow sole on saturation excess runoff

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