SPorDyn: A Python code for modeling the evolution of soil pore size distribution after tillage

Chandrasekhar, Parvathy; Kreiselmeier, Janis; Schwen, Andreas; Weninger, Thomas; Jülich, Stefan; Feger, Karl‐Heinz; Schwärzel, Kai

doi:10.1016/j.mex.2019.09.014

“…The pore space is affected by several factors, the most important of which is the compaction of soil aggregates by agricultural work, and that the pore space is in a state of continuous change with time due to the effect of external and internal stresses of the soil system (Horn, 2021). Researchers always strive to improve the ideal porosity of the soil and keep it as stable as possible to provide plant production, and this is a major goal of soil management (Chandrasekhar et al, 2019). Several studies indicated that the stability of soil pores has a close relationship to the stability of soil structure.…”

Section: Introductionmentioning

confidence: 99%

Pore size distribution of soil treated with different plowing depths and its relationship to the efficiency of water use for corn

Mahdi

¹

,

Al-Aridhee

²

2022

ijhs

0

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The soil pore size distribution is one of the propertiesthat directly affect water infiltration, hydraulic conductivity, and water holding capacity. Soil tillage often results in an unstable soil structure with an increase in the percentage of drainage pores between soil aggregates, which change with time due to the wetting and drying cycle, soil solution components, agricultural processes, and biological activity, as well as the change of water conductivity with time.In order to test the effect of the plowing depth on the soil pore size distribution, an experiment was carried out in a silty clay loam in the Nile sub-district of Babylon Governorate, south of Baghdad, Iraq, with four plowing depths. The first treatment was No-tillage (T0), and Minimum tillage usingspike pin harrows, at a depth of 0.10 m (T1). The chisel plowwas used for plowing with two depths of 0.20 m and 0.30 m, which represented treatments (T2),and (T3), respectively. Irrigation was carried out by applying three irrigation systems which are surface drip irrigation I1, subsurface drip irrigation I2 and basin irrigation I3.

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“…Rabot et al, (2018) demonstrated the importance of the soil pore size distribution for their impact on controlling fluid movement and storage in the soil and providing aspace within the area filled with air important for the vital and physiological activity of the rhizosphere.The pore space is affected by several factors, the most important of which is the compaction of soil aggregates by agricultural work, and that the pore space is in a state of continuous change with time due to the effect of external and internal stresses of the soil system (Horn, 2021). Researchers always strive to improve the ideal porosity of the soil and keep it as stable as possible to provide plant production, and this is a major goal of soil management (Chandrasekhar et al, 2019).Several studies indicated that the stability of soil pores has a close relationship to the stability of soil structure. Moreover, the presence of organic matter or conditioner in the soil, especially its presence in soils with a fine texture, has led to a significant improvement in soil structure, which was reflected in a good pore size distribution and increasing the diameter of the effective pores (Gosh et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Pore size distribution of soil treated with different plowing depths and its relationship to the efficiency of water use for corn

Mahdi

¹

,

Al-Aridhee

²

2022

ijhs

0

View full text Add to dashboard Cite

The soil pore size distribution is one of the propertiesthat directly affect water infiltration, hydraulic conductivity, and water holding capacity. Soil tillage often results in an unstable soil structure with an increase in the percentage of drainage pores between soil aggregates, which change with time due to the wetting and drying cycle, soil solution components, agricultural processes, and biological activity, as well as the change of water conductivity with time.In order to test the effect of the plowing depth on the soil pore size distribution, an experiment was carried out in a silty clay loam in the Nile sub-district of Babylon Governorate, south of Baghdad, Iraq, with four plowing depths. The first treatment was No-tillage (T0), and Minimum tillage usingspike pin harrows, at a depth of 0.10 m (T1). The chisel plowwas used for plowing with two depths of 0.20 m and 0.30 m, which represented treatments (T2),and (T3), respectively. Irrigation was carried out by applying three irrigation systems which are surface drip irrigation I1, subsurface drip irrigation I2 and basin irrigation I3.Soil water retention curve (θ(h)) was estimated for field soil.

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How does building healthy soils impact sustainable use of water resources in irrigated agriculture?

Acevedo

¹

,

Waterhouse

²

,

Barrios-Masias

³

et al. 2022

Elementa: Science of the Anthropocene

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As blue water resources become increasingly scarce with more frequent droughts and overuse, irrigated agriculture faces significant challenges to reduce its water footprint while maintaining high levels of crop production. Building soil health has been touted as an important means of enhancing the resilience of agroecosystems to drought, mainly with a focus in rainfed systems reliant on green water through increases in infiltration and soil water storage. Yet, green water often contributes only a small fraction of the total crop water budget in irrigated agricultural regions. To scope the potential for how soil health management could impact water resources in irrigated systems, we review how soil health affects soil water flows, plant–soil–microbe interactions, and plant water capture and productive use. We assess how these effects could interact with irrigation management to help make green and blue water use more sustainable. We show how soil health management could (1) optimize green water availability (e.g., by increasing infiltration and soil water storage), (2) maximize productive water flows (e.g., by reducing evaporation and supporting crop growth), and (3) reduce blue water withdrawals (e.g., by minimizing the impacts of water stress on crop productivity). Quantifying the potential of soil health to improve water resource management will require research that focuses on outcomes for green and blue water provisioning and crop production under different irrigation and crop management strategies. Such information could be used to improve and parameterize finer scale crop, soil, and hydraulic models, which in turn must be linked with larger scale hydrologic models to address critical water-resources management questions at watershed or regional scales. While integrated soil health-water management strategies have considerable potential to conserve water—especially compared to irrigation technologies that enhance field-level water use efficiency but often increase regional water use—transitions to these strategies will depend on more than technical understanding and must include addressing interrelated structural and institutional barriers. By scoping a range of ways enhancing soil health could improve resilience to water limitations and identifying key research directions, we inform research and policy priorities aimed at adapting irrigated agriculture to an increasingly challenging future.

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SPorDyn: A Python code for modeling the evolution of soil pore size distribution after tillage

Abstract: Graphical abstract

Cited by 4 publications

References 10 publications

Pore size distribution of soil treated with different plowing depths and its relationship to the efficiency of water use for corn

Pore size distribution of soil treated with different plowing depths and its relationship to the efficiency of water use for corn

Pore size distribution of soil treated with different plowing depths and its relationship to the efficiency of water use for corn

How does building healthy soils impact sustainable use of water resources in irrigated agriculture?

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