Microbial regulation of soil structural dynamics.

Chenu, Claire; Cosentino, Diego; Ritz, Karl; Young, Iain M.

doi:10.1079/9781845935320.0037

Cited by 81 publications

(99 citation statements)

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“…This has ramifications on soil structural dynamics, increasing enmeshment by fungal hyphae and fine roots. In general, fungi have a larger impact on soil structural dynamics and aggregate stabilisation than bacteria (Chenu and Cosentino 2011). This can be explained by the variety of mechanisms by which fungi are associated with soil aggregation and structure.…”

Section: Binding Via Filamentous Structuresmentioning

confidence: 99%

“…The excretion of EPS and mucilages by soil microbes, roots and earthworm gut mucus can bind together soil particles through adsorption to minerals via electrostatic bonds (Chenu and Cosentino 2011). These substances play important roles in soil aggregate stability.…”

Section: Adhesion Of Constituentsmentioning

confidence: 99%

“…The release of such substances has been related to aggregate stability, although the mechanisms involved remain unclear. Fungi generally produce more hydrophobic compounds than bacteria, although the amount and type vary amongst different groups of fungi (Chenu and Cosentino 2011).…”

Section: Surface Coating Phenomenamentioning

confidence: 99%

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Plant: soil interactions in temperate multi-cropping production systems

2013

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Section: Binding Via Filamentous Structuresmentioning

confidence: 99%

Section: Adhesion Of Constituentsmentioning

confidence: 99%

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Plant: soil interactions in temperate multi-cropping production systems

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“…This can be related to the soil structure formation and soil stabilization by roots (e.g. Chenu andCosentino, 2011, Grzesiak et al, 2014), the latter being a relevant …”

Section: Effect Of Mechanical and Hydraulic Stresses On The Mechanicamentioning

confidence: 99%

Functional resistance and resilience of the pore system of an andisol exposed to different strategies of pasture improvement under sheep grazing

Ivelic-Sáez

Zúñiga

Valle

et al. 2015

J. Soil Sci. Plant Nutr.

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In southern Chile, different strategies have been utilized to improve the production levels of degraded pastures. Due to grazing, soils are subjected to mechanical and hydraulic stresses throughout the year. The aim of the study was to evaluate the effect of different strategies to improve a degraded naturalized pasture under sheep grazing on the resistance and resilience of the pore system of an Andisol subjected to mechanical and hydraulic stresses. Undisturbed soil samples were collected from two tilled, seeded and fertilized pastures (T1-T2), a non-tilled degraded and naturalized pasture with no fertilization (T3), a fertilized pasture (T4) and a non-tilledfertilized and ungrazed pasture (T5). Also, cylinders were filled with homogenized soil (T6). The tilled and non-tilled pastures (T1-T5) were able to maintain their functions of storage and transport of water and air as well as their mechanical properties against both stresses. No significant differences between the pasture improvement strategies were observed when evaluated during the second year after the implementation of the improvement strategies, which highlights the high resistance and resilience capacity of the Andisol. However, some tendencies (e.g. while the air capacity and permeability tended to increase following mechanical stress, plant available water increased; the opposite was observed following hydraulic stress) and significant differences (due to the simulated effect of aggregate destruction during tillage, a decrease in air capacity, and an increase in soil shrinkage capacity after compaction were assessed) were observed, which highlight the necessity for further studies to better understand the complex interactions in pasture systems.

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“…The development of structure in soil results in voids that form the pore structure (Chenu and Cosentino, 2011). The soils having a developed structural form and ideal physical environment properties are rich in water and nutrients and have a good aeration capacity, a high biological activity, an ideal environment for root development and a good drainage system.…”

Section: Introductionmentioning

confidence: 99%

Farklı Bitki Yönetimi Altındaki Toprakların Strüktürel Ölçütlerindeki Değişimler

Hacımüftüoğlu¹,

Öztaş²

2017

Atatürk Üniversitesi Ziraat Fakültesi Dergisi

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Soil structure is one of the most important soil physical characteristics affecting on soil productivity. Structural development of soil is under the control of many inside and outside factors. It is expected that soil structural characteristics change with changes in plant pattern because of differentiations in agronomic properties, root system and amounts of organic matter incorporated into the soil. The objective of this study was to evaluate changes in structural behaviors of soils under different crop management systems. Soil samples collected from long-term (+10 years) experimental fields under different crop management systems; sun flower, wheat, bean, corn, potato and alfalfa, were analyzed for physical, chemical and mechanical properties and structural characteristics were evaluated. The results indicated that soil structural characteristics significantly changed depending on plant patterns. Structural conditions and aggregate stability were the highest in soils under alfalfa crops, but the worst in soils under potatoes and corn production.Keywords: Aggregate stability, cropping pattern, soil structure Farklı Bitki Yönetimi Altındaki Toprakların Strüktürel Ölçütlerindeki DeğişimlerÖZET: Toprak strüktürü, toprağın üretim potansiyelini belirleyen en önemli fiziksel ortam özelliklerinden biridir. Toprakta strüktürel gelişim birçok iç ve dış faktörün kontrolü altındadır. Farklı bitki yönetim uygulamaları bitkinin agronomik özellikleri, kök sistemi ve toprağa organik madde döngüsü farklılıkları dahilinde toprağın strüktürel durumunu önemli ölçüde etkilemektedir. Farklı bitki yönetimi altında bulunan toprakların yapısal özelliklerinde meydana gelen değişimlerin değerlendirmesi amacıyla yürütülen bu çalışmada; uzun yıllardan (+10 yıl) beri farklı bitki yetiştiriciliği (ayçiçeği, buğday, fasulye, mısır, patates ve yonca) altında bulunan deneme alanlarından alınan toprak örneklerinde fiziksel, kimyasal ve mekaniksel özellikler incelenerek yetiştirilen bitkilerin, toprağın strüktürel parametreleri üzerindeki etkileri değerlendirilmiştir. Elde edilen bulgular toprağın strüktürel parametrelerinde, yetiştirilen bitki çeşitliliğine bağlı olarak önemli farklılıkların meydana geldiğini göstermektedir. Strüktürel gelişim derecesi ve agregat stabilitesinin yonca ekim alanlarından alınan toprak örneklerinde en yüksek, patates ve mısır ekim alanlarından alınan toprak örneklerinde ise en düşük değerlerde olduğu saptanmıştır.

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Microbial regulation of soil structural dynamics.

Cited by 81 publications

References 0 publications

Plant: soil interactions in temperate multi-cropping production systems

Plant: soil interactions in temperate multi-cropping production systems

Functional resistance and resilience of the pore system of an andisol exposed to different strategies of pasture improvement under sheep grazing

Farklı Bitki Yönetimi Altındaki Toprakların Strüktürel Ölçütlerindeki Değişimler

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