Plant Roots for Sustainable Soil Structure Management in Cropping Systems

Bodner, Gernot; Mentler, Axel; Keiblinger, Katharina M.

doi:10.1002/9781119525417.ch3

Cited by 13 publications

(4 citation statements)

References 258 publications

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“…A higher USAS indicates better conditions for root system development, and fungal development, especially important for crop rotations in rice production systems (Menete et al, 2008). Hyphae build an extensive network extending beyond the rhizosphere and penetrate soil pores more intensively than fine roots or root hairs because of their smaller hyphal diameter (Bodner et al, 2021). The Leptosols in Kulonprogo and Gunungkidul exhibited significantly more stable macro-aggregates under SRI conditions compared to CRPS (p< 0.05, Figure 5).…”

Section: Resultsmentioning

confidence: 99%

Contrasting rice management systems – Site-specific effects on soil parameters

Maftukhah

Ngadisih

Murtiningrum

et al. 2022

EJSS

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Conventional rice production systems (CRPS) with continuous flooding demand much water. While population growth increases the demand for rice and, consequently, water consumption, agricultural production needs to reduce its water demand. The System of Rice Intensification (SRI) is promoted as an alternative cropland management strategy to sustainably maintain rice yields while optimizing water use. Here, we aimed at investigating whether different management translates into differences in soil parameters. To this end, the two contrasting rice production systems were compared on the same soil types, at four different study sites of D.I. Yogyakarta Province, Indonesia. Crop yields were estimated, and soils were analysed for soil total soil organic carbon (TOC), total nitrogen (TN), dissolved organic carbon (DOC), macro-aggregate stability, and a fungal biomarker (ergosterol) indicative of oxidative soil conditions. Rice yields in the study area were between 6.7 and 9 t ha-1. For TOC, the combined effect of management and site was significant; in particular, in Kulonprogo and Bantul, SRI significantly exceeded CRPS’ TOC values. However, a significant management effect was observed for ergosterol and DOC concentrations. Significantly higher ergosterol concentrations in SRI vs CRPS were found in Sleman and Bantul. DOC was significantly higher under SRI compared to CRPS only in Sleman. DOC and ergosterol were most responsive to management and were improved in SRI systems. The observed site-specific effects suggest the importance to consider the prevailing site conditions for adapting management strategies.

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Section: Resultsmentioning

confidence: 99%

Contrasting rice management systems – Site-specific effects on soil parameters

Maftukhah

Ngadisih

Murtiningrum

et al. 2022

EJSS

Self Cite

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“…Large roots physically displace large particles and increase soil macroporosity (Angers & Caron, 1998; Lucas et al., 2019; Vezzani et al., 2018), while smaller, fine roots displace small soil particles and occupy small pores spaces. Plant exudates, released by roots, may also act as a glue favoring aggregation (Bodner et al., 2021). The biogeochemical properties of the rhizosphere “hydraulic network” thus depend on the characteristics of the root system, the relative growth of large or fine roots, and the dynamic release of root exudates.…”

Section: Discussionmentioning

confidence: 99%

Linking Soil Structure, Hydraulic Properties, and Organic Carbon Dynamics: A Holistic Framework to Study the Impact of Climate Change and Land Management

et al. 2023

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Climate change and unsustainable land management practices have resulted in extensive soil degradation, including alteration of soil structure (i.e., aggregate and pore size distributions), loss of soil organic carbon, and reduction of water and nutrient holding capacities. Although soil structure, hydrologic processes, and biogeochemical fluxes are tightly linked, their interaction is often unaccounted for in current ecohydrological, hydrological and terrestrial biosphere models. For more holistic predictions of soil hydrological and biogeochemical cycles, models need to incorporate soil structure and macroporosity dynamics, whether in a natural or agricultural ecosystem. Here, we present a theoretical framework that couples soil hydrologic processes and soil microbial activity to soil organic carbon dynamics through the dynamics of soil structure. In particular, we link the Millennial model for soil carbon dynamics, which explicitly models the formation and breakdown of soil aggregates, to a recent parameterization of the soil water retention and hydraulic conductivity curves and to solute and O2 diffusivities to soil microsites based on soil macroporosity. To illustrate the significance of incorporating the dynamics of soil structure, we apply the framework to a case study in which soil and vegetation recover over time from agricultural practices. The new framework enables more holistic predictions of the effects of climate change and land management practices on coupled soil hydrological and biogeochemical cycles.

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“…Yunusa and Newton (2003) reported that the diameter of biopores was between 30 µm and 5 mm, which facilitated air and water transport. Root-derived biopores may vary in size and shape due to a variety of architectures of the root system (Bodner et al, 2021). Zhang et al (2018) observed that the shape of biopores created by roots was usually cylindrical and continuous, while nonbiopores were irregular and discontinuous.…”

Section: The Characteristics Of Biopores Formed By Rootsmentioning

confidence: 99%

“…Yunusa and Newton (2003) reported that the diameter of biopores was between 30 μm and 5 mm, which facilitated air and water transport. Root‐derived biopores may vary in size and shape due to a variety of architectures of the root system (Bodner et al., 2021). Zhang et al.…”

Section: The Function Of Plant Rootsmentioning

confidence: 99%

Root and root‐derived biopore interactions in soils: A review

Xiong

Zhang

Peng

2022

J. Plant Nutr. Soil Sci.

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In recent years, the investigation of root–biopore interactions has been reported in many studies, particularly with the application of X‐ray computed tomography (CT). To clarify our understanding of root–biopore interactions, we reviewed the effects of plant roots on soil structure and the biopore effects on plant growth and uptake of nutrients and water. Plant roots can penetrate the soil matrix and form biopores after decay. The biopores are cylindrical, continuous, and stable and facilitate the transport of air and water. The soil around biopores also affects plant growth by its rich nutrients; hence, the concept of a biopore sheath is proposed to indicate the soil affected by the roots and resulting biopores. The behavior of roots encountering biopores is impacted by soil strength, oxygen concentration, biopore characteristics, and crop species. The biopores provide many channels with the least mechanical resistance for crop roots to enter the subsoil, improving the absorption of water and nutrients by crops. However, the effect of biopores on crop growth depends on biopore size. The smaller biopores (<2 mm) promoted plant growth, but the larger biopores did not (≥2 mm), which was mainly related to the degree of contact between root and soil in biopores. However, quantification of root–biopore wall contact is difficult due to the low resolution of CT images, which limits the understanding of the effects of biopore characteristics on plant growth and nutrient uptake. Therefore, determining the contact area between roots and soil in the biopores and revealing the contribution of biopore characteristics to water and nutrient uptake are important to give full play to the functions of biopores in sustainable agriculture.

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Plant Roots for Sustainable Soil Structure Management in Cropping Systems

Cited by 13 publications

References 258 publications

Contrasting rice management systems – Site-specific effects on soil parameters

Contrasting rice management systems – Site-specific effects on soil parameters

Linking Soil Structure, Hydraulic Properties, and Organic Carbon Dynamics: A Holistic Framework to Study the Impact of Climate Change and Land Management

Root and root‐derived biopore interactions in soils: A review

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