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Open AccessArticle

Mechanical Tillage Diversely Affects Glomalin Content, Water Stable Aggregates and AM Fungal Community in the Soil Profiles of Two Differently Managed Olive Orchards

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Center Agriculture Food Environment (C3A), University of Trento, 38122 Trento, Italy
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Research and Innovation Centre, Fondazione Edmund Mach, 38010 San Michele all’Adige, Italy
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Ages s.r.l.s. Spin-off Accademico, Università degli Studi della Basilicata, 85100 Potenza, Italy
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Dipartimento di Agraria, Università degli Studi di Napoli “Federico II”, 80055 Portici, Italy
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Department of Computer Science and Automation Control, University of Salamanca, 37007 Salamanca, Spain
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Ketensis, New York, NY 10036, USA
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CREA Research Centre for Olive, Citrus and Tree Fruit, 87036 Rende, Italy
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Department of European and Mediterranean Cultures, Architecture, Environment and Cultural Heritage (DiCEM), Università degli Studi della Basilicata, 75100 Matera, Italy
*
Author to whom correspondence should be addressed.
Biomolecules 2019, 9(10), 639; https://doi.org/10.3390/biom9100639
Received: 4 September 2019 / Revised: 11 October 2019 / Accepted: 18 October 2019 / Published: 22 October 2019
(This article belongs to the Section Chemical Biology)
This work was designed to investigate the effect of mechanical tillage on glomalin content, arbuscular mycorrhizal fungi (AMF) abundance and diversity, and the concentration of water stable aggregates (WSA), in two adjacent olive groves located in Basilicata (Italy) that were managed over the course of 11 years in accordance with different horticultural models (conventional and sustainable). Soil sampling was performed at four depths between the trees within a row and between rows. In the end, WSA was found to be a highly sensitive indicator (especially in the “macro” fraction) of the effect of management on soil structure, showing the highest statistically significant values within the sustainable system. In the same regard, the diversity of the AM fungal community was negatively affected by conventional practices; on the other hand, a higher concentration of glomalin in the first 20 cm layer of the conventional system is here reported for the first time, as a likely result of disruption of the mycelium provoked by the mechanical tillage. View Full-Text
Keywords: glomalin; water stable aggregates; conventional system; sustainable system glomalin; water stable aggregates; conventional system; sustainable system
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Lombardo, L.; Palese, A.M.; Grasso, F.; Duffy, D.H., III; Briccoli Bati, C.; Xiloyannis, C. Mechanical Tillage Diversely Affects Glomalin Content, Water Stable Aggregates and AM Fungal Community in the Soil Profiles of Two Differently Managed Olive Orchards. Biomolecules 2019, 9, 639.

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