Microbial-based soil quality indicators in irrigated and rainfed soil portions of Mediterranean olive and peach orchards under sustainable management

Pascazio, Saverio; Crecchio, Carmine; Scagliola, Marina; Mininni, Alba Nicoletta; Dichio, Bartolomeo; Xiloyannis, Cristos; Sofo, Adriano

doi:10.1016/j.agwat.2017.10.014

Cited by 26 publications

(24 citation statements)

References 42 publications

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“…qPCR was performed in triplicate to evaluate bacterial 16S rRNA gene copy numbers using an Applied Biosystems 7500 detection system (Applied Biosystems, Foster City, CA, USA) with 341 primer pairs, forward (5 -CCTACGGGNGGCWGCAG-3 ) and 785 primer pairs, reverse (5 -GACTACHVGGGTATCTA ATCC-3 ) [26]. The reaction mixture (20 µL) and amplification conditions were performed based on the methods of Pascazio et al [27]. Reference strain DNA of Azospirillum irakense [28] was used to create the standard curve and the gene copy number in the samples was calculated using the regression equation that related the cycle threshold (Ct) value to the number of copies in the standard curve [29].…”

Section: Real-time Quantitative Pcr Analysis (Qpcr)mentioning

confidence: 99%

Soil Biological Fertility and Bacterial Community Response to Land Use Intensity: A Case Study in the Mediterranean Area

et al. 2019

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The current study was performed to investigate the effects of three different long-term land use intensities on adjacent soil plots, namely a winter wheat field, a grass-covered vineyard, and a cherry farm, on soil biochemical, microbial, and molecular parameters. The results showed the maximum content of soil organic matter (SOM) and microbial biomass carbon (MBC) observed in the grass-covered vineyard. Basal respiration (BSR) and the cumulated respiration (CSR) after 25 days of incubation were significantly higher in the grass-covered vineyard and cherry farm, respectively (BSR 11.84 mg CO2–C kg−1 soil d−1, CSR 226.90 mg CO2–C kg−1 soil). Grass-covered vineyard showed the highest soil biological fertility index (BFI) score (20) and ranked in the class IV (good) of soil biological fertility. Cereal field and cherry farm had lower BFI scores and the corresponding BFI class was III (medium). In addition, the maximum ribosomal RNA copy number and the highest abundance of oligotrophic bacterial groups (25.52% Actinobacteria, 3.45% Firmicutes, and 1.38% Acidobacteria) were observed in the grass-covered vineyard. In conclusion, the grass-covered vineyard is a more conservative system and could have a large potential to improve total carbon storage in soil, mainly because of the cover crop residue management and the low soil perturbation through the no-tillage system.

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Section: Real-time Quantitative Pcr Analysis (Qpcr)mentioning

confidence: 99%

Soil Biological Fertility and Bacterial Community Response to Land Use Intensity: A Case Study in the Mediterranean Area

et al. 2019

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“…In March and June, the soil nitrate content was higher in R soil portions, compared to I, with no significant differences in October. A localized irrigation system reduces the wetted soil portion explored by roots for water and nutrient uptake, increasing nutrient efficiency (Pascazio et al, 2018). Indeed, in order to have an optimized nutrition management under localized irrigation, it is necessary to consider only the wetted soil volume along the rows, in which the main roots are present, and to exclude the I soil portion.…”

Section: Soil Nitrates Monitoringmentioning

confidence: 99%

“…Soil micro-organisms can increase nutrients availability through the processes of soil N and C mineralization, with a direct effect on the soil quality (Malik et al, 2013). reason, it is urgent and important to identify a biochemical indicator related to soil microbial dynamics in order to quantify soil quality (Pascazio et al, 2018;Gil-Sotres et al, 2005). Soil moisture, together with soil temperature, pH and oxygen strongly affects population growth, mobility, nutrient consumption of soil microorganisms, having a direct effect on the N mineralization rate (Sofo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Restoration of soil fertility and management of mineral nutrition in a peach orchard under a sustainable farming system in semi-arid conditions

Mininni¹,

Dichio²,

Pascazio³

et al. 2018

Acta Hortic.

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One of the main environmental challenges of the 21 st century is to face the increase in soil degradation. Nowadays, there is evidence that sustainable orchard management practices can contribute to increasing the SOC, reducing soil CO2 emissions, recovering soil fertility and increasing yields. The main objective of this research was to improve the mineral nutrition management, considering soil fertility parameters and N mineralization, in a peach orchard managed under alternative agricultural practices. One of the most important agronomic practices is irrigation, which is essential for plant production and can increase nutrients availability through soil N and C mineralization, with a direct effect on soil quality. The monitoring of soil nitrates and soil quality index (Nc/Nk ratio) along the row (R), wetted and along the inter-row (I), rain-fed, in the orchard under localized irrigation was performed. The results revealed spatial (R, I) and seasonal variability of soil nitrates and soil quality. This study shows that the long-term adoption of localized irrigation and of sustainable agricultural practices has positive effects on soil quality, with benefits to the stability of the whole agro-ecosystem.

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“…and the ecosystem services it provides are under threat from a range of natural and manmade drivers, including human management of agricultural and other soils [3]. In many parts of the world, fruit groves are endangered by an increasing water shortage often due to changes in rainfall frequency and distribution, and rise of soil aridity and desertification, with resulting critical and low levels of soil organic matter (SOM) and contents of macro-and micronutrients [4]. This insufficient return of SOM to orchard soils has led to severe degradation of the productive capacity of naturally poor soils [5].…”

Section: Introductionmentioning

confidence: 99%

Soil Macrofauna: A key Factor for Increasing Soil Fertility and Promoting Sustainable Soil Use in Fruit Orchard Agrosystems

2020

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Soils and crops in orchard agrosystems are particularly vulnerable to climate change and environmental stresses. In many orchard soils, soil biodiversity and the ecosystem services it provides are under threat from a range of natural and manmade drivers. In this scenario, sustainable soil use aimed at increasing soil organic matter (SOM) and SOM-related benefits, in terms of soil quality and fertility, plays a crucial role. The role of soil macrofaunal organisms as colonizers, comminutors and engineers within soils, together with their interactions with microorganisms, can contribute to the long-term sustainability of orchard soils. Indeed, the continuous physical and chemical action of soil fauna significantly affects SOM levels. This review paper is focused on the most advanced and updated research on this argument. The analysis of the literature highlighted that a significant part of soil quality and fertility in sustainably-managed fruit orchard agrosystems is due to the action of soil macrofauna, together with its interaction with decomposing microorganisms. From the general analysis of the data obtained, it emerged that the role of soil macrofauna in orchards agrosystems should be seriously taken into account in land management strategies, focusing not exclusively on fruit yield and quality, but also on soil fertility restoration.

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Microbial-based soil quality indicators in irrigated and rainfed soil portions of Mediterranean olive and peach orchards under sustainable management

Cited by 26 publications

References 42 publications

Soil Biological Fertility and Bacterial Community Response to Land Use Intensity: A Case Study in the Mediterranean Area

Soil Biological Fertility and Bacterial Community Response to Land Use Intensity: A Case Study in the Mediterranean Area

Restoration of soil fertility and management of mineral nutrition in a peach orchard under a sustainable farming system in semi-arid conditions

Soil Macrofauna: A key Factor for Increasing Soil Fertility and Promoting Sustainable Soil Use in Fruit Orchard Agrosystems

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