Soil fragmentation and aggregate stability as affected by conventional tillage implements and relations with fractal dimensions

Tagar, A. A.; Adamowski, Jan; Memon, Muhammad Sohail; Cuong, Minh; Mashori, A. S.; Soomro, Abid Ali; Bhayo, W.A.

doi:10.1016/j.still.2019.104494

Cited by 45 publications

(34 citation statements)

References 38 publications

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“…The seedbed preparation in conservation tillage systems, on undisturbed soil, is generally limited to the superficial layer: the machines generally operate on crop residues and are equipped with working tools such as straight shanks, to disrupt compacted subsurface layers, and with disks and/or rollers capable of cutting the residues, pulverizing, and leveling the upper layer of soil. These machines, even combined together in a single implement and not powered by the tractor PTO but with passive action on the soil, are capable to prepare, in a single step, a good quality seedbed, for the sowing of an autumnwinter cereal, with consequent energy savings, and to avoid soil compaction [57,58].…”

Section: Quality Of Workmentioning

confidence: 99%

Conventional and Conservation Seedbed Preparation Systems for Wheat Planting in Silty-Clay Soil

Fanigliulo¹,

Pochi²,

Servadio³

2021

Sustainability

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Conventional seedbed preparation is based on deep ploughing followed by lighter and finer secondary tillage of the superficial layer, normally performed by machines powered by the tractor’s Power Take-Off (PTO), which prepares the seedbed in a single pass. Conservation methods are based on a wide range of interventions, such as minimum or no-tillage, by means of machines with passive action working tools which require two or more passes The aim of this study was to assess both the power-energy requirements of conventional (power harrows and rotary tillers with different working width) and conservation implements (disks harrow and combined cultivator) and the soil tillage quality parameters, with reference to the capability of preparing an optimal seedbed for wheat planting. Field tests were carried out on flat, silty-clay soil, using instrumented tractors. The test results showed significant differences among the operative performances of the two typologies of machines powered by the tractor’s PTO: the fuel consumption, the power and the energy requirements of the rotary tillers are strongly higher than power harrows. However, the results also showed a decrease of these parameters proceeding from conventional to more conservation tillage implements. The better quality of seedbed was provided by the rotary tillers.

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Section: Quality Of Workmentioning

confidence: 99%

Conventional and Conservation Seedbed Preparation Systems for Wheat Planting in Silty-Clay Soil

Fanigliulo¹,

Pochi²,

Servadio³

2021

Sustainability

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“…The data on each aggregate size fraction was expressed as a percent relative to the total dry weight of the sample. Mean weight diameter (MWD), geometric mean diameter (GMD), and mass fractal dimension (D m ) were calculated as Cagna [20] and Tagar [21] to evaluate soil aggregate stability.…”

Section: Soil Aggregates Fractionmentioning

confidence: 99%

Dynamics of Soil Organic Carbon and Labile Carbon Fractions in Soil Aggregates Affected by Different Tillage Managements

et al. 2021

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Our study aimed to provide a scientific basis for an appropriate tillage management of wheat-maize rotation system, which is beneficial to the sustainable development of agriculture in the fluvo-aquic soil areas in China. Four tillage treatments were investigated after maize harvest, including rotary tillage with straw returning (RT), deep ploughing with straw returning (DP), subsoiling with straw returning (SS), and no tillage with straw mulching (NT). We evaluated soil organic carbon (SOC), dissolved organic carbon (DOC), permanganate oxidizable carbon (POXC), microbial biomass carbon (MBC), and particulate organic carbon (POC) in bulk soil and soil aggregates with five particle sizes (>5 mm, 5–2 mm, 2–1 mm, 1–0.25 mm, and <0.25 mm) under different tillage managements. Results showed that compared with RT treatment, NT treatment not only increased soil aggregate stability, but also enhanced SOC, DOC, and POC contents, especially those in large size macroaggregates. DP treatment also showed positive effects on soil aggregate stability and labile carbon fractions (DOC and POXC). Consequently, we suggest that no tillage or deep ploughing, rather than rotary tillage, could be better tillage management considering carbon storage. Meanwhile, we implied that mass fractal dimension (Dm) and POXC could be effective indicators of soil quality, as affected by tillage managements.

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“…Dust emissions are also indirectly influenced by anthropogenic activities and changes in soil structure, and hence the erodibility of the soils (e.g. [8,9]). Gaseous emissions from soil may also lead to particulate formation (see the next section).…”

Section: How Soils Affect Air Quality (A) Direct Source Of Pollutants or Precursors To Pollutants (I) Particulatesmentioning

confidence: 99%

The role of soils in the regulation of air quality

Giltrap

Cavanagh

Stevenson

et al. 2021

Phil. Trans. R. Soc. B

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Soils play a key role in meeting the UN Sustainable Development Goals (SDGs). In this study, we review the contribution of soils to the regulation of air quality, which is one of ‘Nature's Contributions to People’ identified by the Intergovernmental-Policy Platform on Biodiversity and Ecosystem Services (IPBES). This is particularly relevant for SDG3 (health and well-being) and 11 (sustainable cities and well-being) but also impacts other SDGs. Soils can act as both a source and a sink of air pollutants (and their precursors). In addition, soils support plant growth which plays a major role in regulating air quality. The scale of the soil impacts on air quality range from global (e.g. greenhouse gas fluxes, stratospheric ozone depletion) to local (e.g. odours, particulates, pathogen transport). Harmful emissions from soil can be increased or decreased by anthropogenic activity, while climate change is likely to modify future emissions patterns, both directly and in response to human mitigation and adaption actions. Although soils are not the only source of these pollutants, it is worthwhile managing them to reduce erosion and nutrient losses to maintain soil health so we may continue to benefit from the contributions to good quality of life they provide. This article is part of the theme issue ‘The role of soils in delivering Nature's Contributions to People’.

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Soil fragmentation and aggregate stability as affected by conventional tillage implements and relations with fractal dimensions

Cited by 45 publications

References 38 publications

Conventional and Conservation Seedbed Preparation Systems for Wheat Planting in Silty-Clay Soil

Conventional and Conservation Seedbed Preparation Systems for Wheat Planting in Silty-Clay Soil

Dynamics of Soil Organic Carbon and Labile Carbon Fractions in Soil Aggregates Affected by Different Tillage Managements

The role of soils in the regulation of air quality

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