Ridge tillage in Australia: a review

Tisdall, J. M.; Hodgson, A.S.

doi:10.1016/0167-1987(90)90055-i

Cited by 40 publications

(11 citation statements)

References 34 publications

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“…A ridge and furrow geometry is formed when the soil surface is modified to form a periodic series of peaks (ridges) and troughs (furrows). This allows water to flow across the field, providing water to the plants whilst preventing waterlogging of the roots (Tisdall & Hodgson, ). One crop that is traditionally grown in ridge and furrow geometries is the potato ( Solanum tuberosum, L.) (Wayman, ), which is an essential crop in temperate European environments (Huaccho & Hijmans, ).…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling of water and solute movement in ridged versus flat planting systems

Duncan

Daly

Sweeney

et al. 2018

European J Soil Science

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Summary We compared water and solute movement between a ridge and furrow geometry and that of flat soil with a mathematical model. We focused on the effects of two physical processes: root water uptake and pond formation on the soil surface. The mathematical model describes the interaction between solute transport, water movement and surface pond depth. Numerical simulations were used to determine how solutes of varying mobility and rates of degradation penetrated into the two soil geometries over a growing season. Both the ridge and furrow or flat soil geometries could reduce solute leaching, but this depended on several factors. Rain immediately after a solute application was a key factor in determining solute penetration into soil. In cases with delayed rain after a solute application, solutes in ridge and furrow geometries collected adjacent to the root system, resulting in reduced solute penetration compared to the flat soil geometry. In contrast, substantial rain immediately after a solute application resulted in ponding where water infiltration acted as the dominant transport mechanism. This resulted in increased solute penetration in the ridge and furrow geometry compared to the flat soil geometry. Highlights We studied solute movement controlled by ponding in ridge and furrow and flat fields. We found the ridged soil could impede or increase leaching compared to the flat soil. Solute hot‐spots formed in ridge and furrow soil because of root water uptake. Time between solute application and rainfall is a key factor for solute penetration.

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Section: Introductionmentioning

confidence: 99%

Mathematical modelling of water and solute movement in ridged versus flat planting systems

Duncan

Daly

Sweeney

et al. 2018

European J Soil Science

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“…This geometry is formed when the soil surface is adapted to form a periodic series of peaks and troughs. This allows water to flow across the field, providing water to the plants whilst preventing waterlogging of the roots (Tisdall & Hodgson, ). However, under certain rainfall conditions, this can lead to pond formation in the furrows that can result in decreased yields for crops such as potatoes (van Loon, ).…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling of water and solute movement in ridge plant systems with dynamic ponding

Duncan

Daly

Sweeney

et al. 2017

European J Soil Science

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We present a mathematical model that describes the movement of water and solutes in a ridge and furrow geometry. We focus on the effects of two physical processes: root water uptake and pond formation in the furrows. Special attention is paid to the physical description of ponding as an effect of transient rain events. We focus on phenomena taking place in the furrow cross‐section, not on the drainage along the furrow. The resulting model comprises a coupled system of partial and ordinary differential equations that describe the mathematical interplay between solute transport, water movement and furrow pond depth. The system of equations is solved numerically using finite element techniques. We conducted numerical simulations to determine how mobile solutes with low buffer powers penetrate into the soil. We considered two cases: low rainfall, in which pond formation does not occur, and high rainfall, in which significant ponding is observed in the furrows. We found, in the presence of roots, that mobile solutes collected into a concentrated spot adjacent to the root system independent of rainfall intensity. In the absence of roots, however, we observed that water infiltration from ponding acted as the dominant transport mechanism for mobile solutes. This resulted in deep solute penetration into the soil when compared with non‐ponded furrows. Highlights Effect of furrow ponding and plant water uptake on solute movement in ridged fields. We developed a mathematical model that describes ponding in furrows from rainfall events. Solute ‘hot spots’ formed in soil from surface ponding and root water uptake. We estimate reduced risk to solute leaching under the effects of ponding when roots are present in soil.

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“…Archer and Smith (1972) reported a threshold below which plant growth decreased when soil air capacity is less than 10% by volume. Similar anaerobiosis problems can occur in fine-textured soils of natural environments (Tisdall and Hodgson, 1990). In the second glasshouse experiment however, the tailings were allowed to drain and form cracks between two watering events, providing additional aeration for root growth.…”

Section: Discussionmentioning

confidence: 98%

How to grow trees on the wastes of a boreal gold mine – identification of the main physico-chemical limitations

Larchevêque¹,

DesRochers²,

Bussière³

et al. 2012

Proceedings of the International Conference on Mine Closure

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The Osisko gold mine in Malartic, Quebec (Canada) is an open-pit mine producing low grade ore and is designed to operate at 55,000 metric ton per day. Its non-acid generating wastes will eventually cover large surfaces that will need to be reclaimed. To minimise mine impacts on water consumption, milling wastes will be deposited in the form of thickened tailings (68% DM). To our knowledge, no study of vegetation establishment on this type of mine waste has yet been published. The Osisko mine is located on the edge of a small town. Consequently, visual aspects of mine waste reclamation are a major concern with respect to social acceptability of the company. Since the surrounding region is covered by boreal forest, tree colonisation appears essential. Tree plantations may accelerate the conversion of degraded lands into forests and also add biodiversity to the area. Two studies were conducted, one on overburden waste rock and a second on milled tailings. In the first study, plantations were established on compacted waste rock (10:1 slope) covered with overburden topsoil or subsoil at two compaction intensities. The second study was conducted in a glasshouse to evaluate the thickened tailings' capacity to sustain tree growth (tamarack, jack pine, black spruce, basket willow, hybrid poplars, and green alder). Tailings alone or mixed with several amendments were tested (overburden soils, vermicomposts from food wastes, chicken manure, peat). In addition, we compared the use of a thin or a thick layer of overburden topsoil. We showed that direct planting in the thickened tailings was not suitable for boreal trees under glasshouse conditions. This substrate high water retention capacity and low macroporosity (or air-filled porosity, ≤ 8%) may be responsible for tree death by limiting 02 availability required for root respiration. To overcome this aeration stress, an organic matter-rich amendment should be used to raise macroporosity to levels suitable for tree growth. Peat (8% DM in the mixture) was the most effective amendment for improving macroporosity (27%) compared to other amendments, including two different composts (22 and 35% DM in the mixtures leading to 14 and 17% macroporosity, respectively) and mine soils. The use of composts produced appropriate macroporosity levels but also increased electrical conductivity to levels (3.4 to 4.1 mS cm-1) limiting broad-leaved species survival and conifer biomass production. No trace metal contamination of the trees occurred in the mixtures, probably due to the near-neutral pH conferred by the tailings. Moreover, the presence of underlying alkaline tailings limited Mn, Zn, and Al phytotoxicity of the acidic overburden topsoil layer from occurring in tree leaves. Consequently, growth of jack pine and all broadleaved species was improved with a thin layer compared to a thick layer of overburden soil, although these trees also showed Cu accumulation in their fine roots (>100 mg.kg-1). https://papers.acg.uwa.edu.au/p/1208_41_Larcheveque/ How to grow trees on the wastes of a bo...

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Ridge tillage in Australia: a review

Cited by 40 publications

References 34 publications

Mathematical modelling of water and solute movement in ridged versus flat planting systems

Mathematical modelling of water and solute movement in ridged versus flat planting systems

Mathematical modelling of water and solute movement in ridge plant systems with dynamic ponding

How to grow trees on the wastes of a boreal gold mine – identification of the main physico-chemical limitations

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