Organic Amendments and Soil Suppressiveness in Plant Disease Management

Meghvansi, Mukesh K.; Varma, Ajit

doi:10.1007/978-3-319-23075-7

Cited by 21 publications

(12 citation statements)

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“…Suppression of Fusarium wilts is triggered by restrict groups of microorganisms acting synergistically [2,23,124,145]. Authors have highlighted that competition for nutrients is one of the primary mechanisms by which disease-suppressive soils are capable for controlling Fusarium diseases [3].…”

Section: Role and Functionality Of The Soil Microbiota In Suppressingmentioning

confidence: 99%

“…Suppression of Rhizoctonia diseases also resulted to be induced by restrict groups of microorganisms acting synergistically [212]. Suppression of Rhizoctonia dampingoff, collar rot and root rot by soil amendment with green composts resulted to be most variable and unpredictable in many horticultural soil-less systems [45,120,122,175].…”

Section: Role and Functionality Of The Soil Microbiota In Suppressingmentioning

confidence: 99%

“…Plant diseases caused by soil-borne plant pathogens (filamentous fungi, oomycetes and bacteria) can be effectively suppressed by biotic and abiotic factors of the soil despite the presence of virulent pathogens and susceptible hosts [13]. Suppressiveness is a natural characteristic of soil that is accepted worldwide as a management strategy to create sustainable food production ensuring high agricultural productivity levels and low environmental footprints in intensive cropping systems under high pressure of pathogens [113]. Microbiota plays a key role in soil health-regulating dynamics of soil organic matter (SOM) and plant nutrient availability in agroecosystems [115,171].…”

Section: Introductionmentioning

confidence: 99%

“…Soil microbiota manipulation by organic amendment has been applied since 1980s to reduce either pathogen inoculum or its virulence in conducive soil, although effectiveness of these approaches depends on the pathogen/host system [196]. Very important goals have been reached stimulating the specific disturbance of soil microbiota through agronomical practices focused to change and shape the microbial communities' network for increasing the natural suppressiveness of soil [208,232]. Supplementation of beneficial exogenous microbiota provided by selected biological control agents (BCAs), organic amendments (OAs) and composts seemed to be promising strategies since 2000s for increasing suppression of conducive soils [40,56,94,181,210].…”

Section: Introductionmentioning

confidence: 99%

“…Organic amendment was employed as a part of a more complex strategical picture in controlling more soil-borne pathogens basing on their capability to induce disease suppression [15,93,127,128,156]. Authors documented that combining OAs with BCAs, more beneficial effects in suppressing soil-borne pathogens were obtained [184]. Organic amendment offers promising results in controlling soil-borne diseases also in combination with soil pre-fumigation, where a severe initial destroying of the soil wild microbiota followed by replacement with new microbiomes were both stimulated [194].…”

Section: Introductionmentioning

confidence: 99%

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Soil microbiota manipulation and its role in suppressing soil-borne plant pathogens in organic farming systems under the light of microbiome-assisted strategies

Corato

2020

Chem. Biol. Technol. Agric.

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Soil microbiota plays a key role in suppressing soil-borne plant pathogens improving the natural soil suppressiveness. Microbiome disturbance triggers specific perturbation to change and shape the soil microbial communities’ network for increasing suppression against phytopathogens and related diseases. Very important goals have been reached in manipulation of soil microbiota through agronomical practices based on soil pre-fumigation, organic amendment, crop rotation and intercropping. Nevertheless, to limit inconsistencies, drawbacks and failures related to soil microbiota disturbance, a detailed understanding of the microbiome shifts during its manipulation is needed under the light of the microbiome-assisted strategies. Next-generation sequencing often offers a better overview of the soil microbial communities during microbiomes manipulation, but sometime it does not provide information related to the highest taxonomic resolution of the soil microbial communities. This review work reports and discusses the most reliable findings in relation to a comprehensive understanding of soil microbiota and how its manipulation can improve suppression against soil-borne diseases in organic farming systems. Role and functionality of the soil microbiota in suppressing soil-borne pathogens affecting crops have been basically described in the first section of the paper. Characterization of the soil microbiomes network by high-throughput sequencing has been introduced in the second section. Some relevant findings by which soil microbiota manipulation can address the design of novel sustainable cropping systems to sustain crops’ health without use (or reduced use) of synthetic fungicides and fumigants have been extensively presented and discussed in the third and fourth sections, respectively, under the light of the new microbiome-assisted strategies. Critical comparisons on the next-generation sequencing have been provided in the fifth section. Concluding remarks have been drawn in the last section.

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