Protective green cover enhances soil respiration and native mycorrhizal potential compared with soil tillage in a high-density olive orchard in a long term study

Turrini, Alessandra; Caruso, Giovanni; Avio, Luciano; Gennai, Clizia; Palla, Michela; Agnolucci, Monica; Tomei, Paolo; Giovannetti, Manuela; Gucci, Riccardo

doi:10.1016/j.apsoil.2017.04.001

Cited by 39 publications

(21 citation statements)

References 66 publications

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“…In the climate and soil conditions of our study, the introduction of a legume GC such as bitter vetch increased AMF colonization in the olive roots by 50% with respect to the tillage treatment. This disagrees with other studies that did not find any AMF stimulation from the use of GC in olive groves ( Turrini et al., ) or vineyards ( Baumgartner et al., ). The difference between those studies and ours could be the result of the adverse growing conditions: a gypsic soil with low SOM under semiarid climate, without irrigation and fertilizers.…”

Section: Discussioncontrasting

confidence: 99%

“…The use of GC can stimulate mycorrhizal symbiosis in the main crop since they provide an additional AMF host and the minimization of tillage enhances the AMF inocula (García-Gonzá lez et al, 2018). In woody crops, mycorrhizal benefits might be increased by the use of GC (Cheng and Baumgartner, 2004), however, some field experiments have not found clear benefits from GC on mycorrhizal activity in olive trees (Turrini et al, 2017) or other woody crops, such as grapevines (Baumgartner et al, 2005). Due to the scarcity of studies, more field experiments are needed to evaluate the effect of different GC species on AMF in olive groves.…”

Section: Introductionmentioning

confidence: 99%

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Mycorrhizal, nutritional and virgin olive oil parameters affected by groundcovers

García-González

García‐Díaz

Sastre

et al. 2019

J. Plant Nutr. Soil Sci.

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Management of olive groves faces the challenge of reconciling yield, soil degradation and virgin olive oil (VOO) quality. We evaluated the effect of replacing tillage management by vegetal groundcovers (GC) on the relationships between mycorrhizal symbiosis, olive nutritional status, and VOO quality under field rainfed conditions. The experiment was set up in 2014 in an existing Cornicabra olive orchard with a Haplic Gypsisol soil under a Mediterranean semiarid climate. Four treatments were replicated four times and consisted of: (1) annual cover of bitter vetch, (2) permanent Brachypodium distachyon, (3) spontaneous vegetation cover (mainly Brassicaceae species), and (4) tilled soil. The use of bitter vetch GC increased the olive root colonization by 50% compared with the tillage treatment. The effect of tillage on VOO differed from that of GC use. Tillage treatment decreased maturity index and its VOO had lower polyphenol content and less luminosity than that from the GC treatments. Olive root colonization, together with changes in nutrients such as Cu, B and other elements resulting from GC use, seems to play an important role in explaining the variability of VOO quality parameters. Although tillage may lead to higher yield by controlling competition for water and nutrients, the introduction of GC in olive groves led to higher polyphenol contents, enhancing VOO quality and, at the same time, protecting soil from erosion.

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Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mycorrhizal, nutritional and virgin olive oil parameters affected by groundcovers

García-González

García‐Díaz

Sastre

et al. 2019

J. Plant Nutr. Soil Sci.

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“…It suggests that microorganisms present in the almost entirely vegetation covered topsoil horizon of natural grassland could be highly activated by easily metabolizable organic carbon sources (e.g., simple sugars, amino acids and organic acids) that are common among the exudates of different plants. The research of Turrini et al [48] also demonstrated that respiration rates of soils with permanent plant coverage can be constantly higher than those of tilled soils. However, the fact that maize plants were in the juvenile vegetative growth stage at the time of the study should not be overlooked.…”

Section: Discussionmentioning

confidence: 98%

Comparison of Soil Bacterial Communities from Juvenile Maize Plants of a Long-Term Monoculture and a Natural Grassland

et al. 2020

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Nowadays, one of the most important challenges is to ensure sustainable agricultural management of crops such as maize (Zea mays L.). Long-term crop production, however, may influence the soil properties, the composition and activity of microbial communities. The aim of this study was to compare the catabolic activity and taxonomic diversity of bacterial communities inhabiting the soil of a non-fertilized maize monoculture and a natural grassland. Samples were taken from the horizons A and C in the first part of the vegetation period. MicroResp™ technique was used to explore the catabolic potential of microbial communities and next generation amplicon sequencing to reveal the bacterial diversity. Based on the catabolic activity results, higher differences were revealed among the soil horizons than the different land uses. The highest degree carbon source utilization was detected in the soil horizon A of the natural grassland. The taxonomic composition of bacterial communities was dominated by Proteobacteria. The relative abundance of other dominant phyla (Acidobacteria, Bacteroidetes, Verrucomicrobia, Actinobacteria, Planctomycetes, Gemmatimonadetes, Chloroflexi and Patescibacteria) varied according to both the land use and soil depth. Amplicon sequences belonging to genera of r-strategist “copiotrophic” and K-strategist “oligotrophic” bacteria were identified from the soils of both maize monoculture and grassland.

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“…When a cover crop policy is adopted, it is usually accompanied by no-tillage practices, which have their own benefits with respect to tree performance, soil fertility and conservation [86,89,90], as well as on CO 2 emission to the atmosphere. The practice of cover crops accompanied by no-tillage in intensive olive orchards has more advantages than disadvantages, and can be integrated as a key component in sustainable olive orchard management [91,98].…”

Section: Cover Cropsmentioning

confidence: 99%

Sustainable Management of Olive Orchard Nutrition: A Review

et al. 2020

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Intensification of olive orchard management entails increased use of fertilizers, especially nitrogen, phosphorus, and potassium. In this review, plant responses to nutritional aspects, as well as environmental considerations, are discussed. Nutrient deficiency impairs production, whereas over-fertilization may reduce yields and oil quality, and increase environmental hazards and production costs. The effect of irrigation on nutrient availability and uptake is very significant. Application of organic matter (e.g., manure, compost) and cover crops can serve as substitutes for mineral fertilization with additional benefits to soil properties. Recycling of the pruned orchard material, olive pomace and olive mill wastewater, as well as the use of recycled wastewater for irrigation, are all potentially beneficial to olive orchard sustainability, but present the risk of environmental pollution. Some considerations regarding optimization of olive orchard nutrition are discussed.

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Protective green cover enhances soil respiration and native mycorrhizal potential compared with soil tillage in a high-density olive orchard in a long term study

Cited by 39 publications

References 66 publications

Mycorrhizal, nutritional and virgin olive oil parameters affected by groundcovers

Mycorrhizal, nutritional and virgin olive oil parameters affected by groundcovers

Comparison of Soil Bacterial Communities from Juvenile Maize Plants of a Long-Term Monoculture and a Natural Grassland

Sustainable Management of Olive Orchard Nutrition: A Review

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