Influences of mycelial fungi on soil aggregation and organic matter storage in conventional and no-tillage soils

Beare, Michael H.; Hu, Shengquan; Coleman, David C.; Hendrix, Paul F.

doi:10.1016/s0929-1393(96)00142-4

Cited by 215 publications

(108 citation statements)

References 33 publications

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“…The variation of WSA in different land use systems might be the effect of the interruption of farmer practices. This is in line with the existing studies [4,[37][38][39][40].…”

Section: The Dsa and Wsa Distribution Of Soil Aggregate Compositions (%)supporting

confidence: 93%

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Kalhoro

Chen

et al. 2017

Sustainability

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Soil aggregate stability is an important indicator for controlling soil losses and can improve soil quality, particularly in an area such as the Loess Plateau. The objective of this study was to estimate the differences in soil aggregates across six different land-use systems (grassland, apple orchard, abandoned apple orchard, cropland maize, cropland wheat, and shrub-grassland). For this purpose, dry and wet sieving techniques were employed to assess aggregate content and aggregate stability. Higher percentages of water stable aggregates were observed in the abandoned apple orchard and shrub-grassland at 63% and 61%, respectively. The maximum dry aggregate stability (%) was recorded at 78% and 77% in both wheat cropland and common apple orchard, and the abandoned apple orchard was only 74%. Both mean weight diameters and geometric mean diameters of aggregate were recorded as higher in grassland, shrub-grassland, and the abandoned apple orchard, than the other land uses. The formation of soil aggregates and their stability were positively correlated with soil organic carbon content and root biomass of different plant communities. Higher amounts of soil organic carbon content were noted in the abandoned apple orchard, common apple orchard, and natural grassland at the 0-20 cm soil layer. The results of the correlation coefficient showed a positive significant correlation between the mean weight diameter, geometric diameter, root biomass, and soil organic carbon content. Conclusively, the type of land use affected the soil aggregation and distribution of size fractions; the small fractions of the aggregates formed large fractions by combining with fresh organic matter, and increased soil organic carbon concentrations were closely linked with the formation of macro-aggregates. Thus, converting slope farmland to forestland and grassland could improve water-stable aggregate and reduce soil disturbances in areas (like the Loess Plateau) with the highest erosion risk.

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“…The variation of WSA in different land use systems might be the effect of the interruption of farmer practices. This is in line with the existing studies [4,[37][38][39][40].…”

Section: The Dsa and Wsa Distribution Of Soil Aggregate Compositions (%)supporting

confidence: 93%

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Kalhoro

Chen

et al. 2017

Sustainability

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“…However, the MWD expressed a positive correlation of aggregate size to hyphal length and OC over all plant treatments that is in agreement with previous reports that hyphal length increased OC in association with increased aggregate size (Hu et al 1995;Beare et al 1997;Angers et al 1997b). Fungi have been associated with increased soil aggregation in grasslands (Tisdall and Oades 1979) and with winter rye (Lolium perenne) planted into sorghum residue in NT (Beare et al 1997) for which there is a high abundance of mycorrhizal fungi.…”

Section: Soil Aggregationsupporting

confidence: 90%

Fungal response from oat (Avena sativa)plants and surface residue in relation to soil aggregation and organic carbon

Manns

Maxwell

Emery

2009

Journal of Plant Interactions

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The influence of soil fungi on soil organic carbon (OC) from surface residue was tested in outdoor plots in southern Ontario, Canada, 2004. Fungal hyphal length, soil aggregation, OC and light and heavy fractions of organic matter were compared with factors of plant growth (with or without oat [Avena sativa]) and surface residue (no residue, oat straw (low C:N) or corn (Zea mays) stalks (high C:N)) in a factorial arrangement. Significant increases were observed in soil OC from the oat plants, and from corn stalks compared to straw residue, in the growing season with very moist, high OC, sandy soil. In treatments with corn stalk residue, fungal hyphal length was increased with interaction from the oat plants and residue and was positively correlated with the heavy fraction organic matter along with soil OC. Fungal hyphae, plant roots and high C:N residue were all factors in soil OC increases.

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“…As the hyphae decompose, glomalin sloughs off and may 'glue' and stabilize soil aggregates 128,130 . In agricultural systems, mycorrhizal fungi are vulnerable to excess fertilization or pesticide use 131,134,135 , physical destruction by tillage 136 and absence of host plants, resulting in reductions in C allocation to the rhizosphere 134,137 and weakened relationship with newer crop varieties 138,139 . Excess fertilization may cause plant roots to reject AM colonization, preventing the fungus from obtaining the C it needs to live and grow.…”

Section: Carbon Sequestrationmentioning

confidence: 99%

Diversification and ecosystem services for conservation agriculture: Outcomes from pastures and integrated crop–livestock systems

Sanderson

Archer

Hendrickson

et al. 2013

Renew. Agric. Food Syst.

120

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Conservation agricultural systems rely on three principles to enhance ecosystem services: (1) minimizing soil disturbance, (2) maximizing soil surface cover and (3) stimulating biological activity. In this paper, we explore the concept of diversity and its role in maximizing ecosystem services from managed grasslands and integrated agricultural systems (i.e., integrated crop-livestock-forage systems) at the field and farm level. We also examine trade-offs that may be involved in realizing greater ecosystem services. Previous research on livestock production systems, particularly in pastureland, has shown improvements in herbage productivity and reduced weed invasion with increased forage diversity but little response in terms of animal production. Managing forage diversity in pastureland requires new tools to guide the selection and placement of plant mixtures across a farm according to site suitability and the goals of the producer. Integrated agricultural systems embrace the concept of dynamic cropping systems, which incorporates a long-term strategy of annual crop sequencing that optimizes crop and soil use options to attain production, economic and resource conservation goals by using sound ecological management principles. Integrating dynamic cropping systems with livestock production increases the complexity of management, but also creates synergies among system components that may improve resilience and sustainability while fulfilling multiple ecosystem functions. Diversified conservation agricultural systems can sustain crop and livestock production and provide additional ecosystem services such as soil C storage, efficient nutrient cycling and conservation of biodiversity.

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Influences of mycelial fungi on soil aggregation and organic matter storage in conventional and no-tillage soils

Cited by 215 publications

References 33 publications

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Fungal response from oat (Avena sativa)plants and surface residue in relation to soil aggregation and organic carbon

Diversification and ecosystem services for conservation agriculture: Outcomes from pastures and integrated crop–livestock systems

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