Soil suppressiveness and functional diversity of the soil microflora in organic farming systems

Postma, J.; Schilder, M.T.; Bloem, J.; Leeuwen-Haagsma, Wiepie K. van

doi:10.1016/j.soilbio.2008.05.023

Cited by 170 publications

(143 citation statements)

References 47 publications

(7 reference statements)

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“…This occurred probably due the diversity of plants that attracts a greater diversity of microorganisms that may be involved in soil suppressiveness (Friberg et al, 2005). A study on natural suppressiveness of 10 organic farms with arable fields soil against R. solani AG2.2IIIB in sugar beet showed high correlation between suppressiveness, bacterial diversity and fungal activity (Postma et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

“…For example, the soil inhabitant pathogen R. solani has a saprogenic stage and can grow in organic matter while Verticillium need a host to survive (Postma et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

“…(Tuitert et al, 1998) and Lysobacter spp. (Postma et al, 2008), suggesting some mechanisms of bacteria antagonism against plant pathogenic fungi. In addition to the bacterial populations, total microbial activities, metabolic structure of soil and microbial communities have been associated with suppressiveness diseases (Tuitert et al, 1998), regardless of soil type (Murakami et al, 2000) and by several factors (Janvier et al, 2007), mainly soil biotic attributes.…”

Section: Resultsmentioning

confidence: 99%

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Different cover promote sandy soil suppressiveness to root rot disease of cassava caused by Fusarium solani

Barros¹,

Medeiros²,

Notaro³

et al. 2014

Afr. J. Microbiol. Res.

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Sandy soils of 19 arable fields were analyzed for disease suppressiveness against root rot disease of cassava, caused by Fusarium solani CFF109. Analysis of chemical, physical, biochemical, microbial population and activity, and soil characteristics were assessed. Soils with different management histories and covers most commonly found in the region were collected to build a greenhouse experiment, to evaluate the natural suppressiveness of soils against cassava root rot. The severity was submitted with all data across correlation and multivariate analyses to find correlation between disease suppressiveness and abiotic or biotic soils attributes. Differences in disease suppressiveness were found between the treatments for cassava root rot. Significant disease suppression was found in 37% of the soils. The sandy soil covered with consortium of Zea mays + Vigna unguiculata was the most efficient in suppressiveness against disease caused by F. solani. The data indicated significant correlation between soil characteristics and suppressiveness cassava root rot. The soil supressiveness against cassava root rot was favored by increase by total bacteria, fluorescent group bacteria populations and activity of acid and alkaline phosphatase and β-glucosidase.

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Section: Resultsmentioning

confidence: 99%

“…For example, the soil inhabitant pathogen R. solani has a saprogenic stage and can grow in organic matter while Verticillium need a host to survive (Postma et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Different cover promote sandy soil suppressiveness to root rot disease of cassava caused by Fusarium solani

Barros¹,

Medeiros²,

Notaro³

et al. 2014

Afr. J. Microbiol. Res.

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“…A more abundant and diverse community would also maximize microbial competition and/or niche saturation rendering the soil more resistant to new invasion. For example, soils with higher microbial biomass and/or diversity have been found to be more disease-suppressive [203][204][205] and resilient to invasive organisms [98]. The role of community evenness has received less attention than richness or diversity; however, evidence supports an important role for evenness in community functioning and plant productivity, particularly under stresses or perturbations [206].…”

Section: Fundamental Information Lacking Regarding the Identities DImentioning

confidence: 99%

Understanding and Enhancing Soil Biological Health: The Solution for Reversing Soil Degradation

et al. 2015

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Our objective is to provide an optimistic strategy for reversing soil degradation by increasing public and private research efforts to understand the role of soil biology, particularly microbiology, on the health of our world's soils. We begin by defining soil quality/soil health (which we consider to be interchangeable terms), characterizing healthy soil resources, and relating the significance of soil health to agroecosystems and their functions. We examine how soil biology influences soil health and how biological properties and processes contribute to sustainability of agriculture and ecosystem services. We continue by examining what can be done to manipulate soil biology to: (i) increase nutrient availability for production of high yielding, high quality crops; (ii) protect crops from pests, pathogens, weeds; and (iii) manage other factors limiting production, provision of ecosystem services, and resilience to stresses like droughts. Next we look to the future by asking what needs to be known about soil biology that is not currently recognized or fully understood and how these needs could be addressed using emerging research tools. We conclude, based on our perceptions of how new knowledge regarding soil biology will help make agriculture more sustainable and productive, by recommending research emphases that should receive first priority through enhanced public and private research in order to reverse the trajectory toward global soil degradation.

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“…Besides the increment of endemic Trichoderma spp., it is possible that a high C/N ratio and lignin content of palisade grass promote other suppression mechanisms of R. solani, such as beneficial Streptomyces spp. and basidiomycetes responsible to microsclerotia decay (Postma et al 2008, Van Beneden et al 2010. Changes in the microbial community can improve fungistasis and decrease populations of some pathogens.…”

Section: Factormentioning

confidence: 99%

Response of soil fungi and biological processes to crop residues in no-tillage system

Oliveira

Nascente

Ferreira

et al. 2016

Pesqui. Agropecu. Trop.

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Soil management and crop rotation can directly affect the soil microbial community. This study aimed at determining soil quality indicators and soilborne fungi in a no-tillage system. A randomized blocks design, in a 3 × 2 factorial arrangement, was used. Three cover crops (palisade grass, millet and common bean) provided straw and root residues to the following crops of corn and soybean. The common bean-soybean sequence provided little soil covering and higher metabolic quotient and soil basal respiration and total enzymatic activity, as well as a general increase of soilborne fungi. The principal component analysis revealed that 76.61 % of the variance can be explained by the three first components, with cover crops, soil basal respiration and metabolic quotient regarded as the main qualitative and quantitative sources of variance in the first component. Carbon from the microbial biomass was the soil quality indicator best correlated to crop yield and negatively correlated to Fusarium solani density. The Rhizoctonia solani population was correlated with higher metabolic quotient and soil total enzymatic activity and basal respiration. The palisade grass crop favored soil fungistasis and enhancement of antagonist Trichoderma spp. populations. The multivariate approach demonstrated the association of soil fungi with soil quality indicators, as well as a higher influence of cover crops on the variance observed, in comparison to cash crops.

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Soil suppressiveness and functional diversity of the soil microflora in organic farming systems

Abstract: Abstract

Cited by 170 publications

References 47 publications

Different cover promote sandy soil suppressiveness to root rot disease of cassava caused by Fusarium solani

Different cover promote sandy soil suppressiveness to root rot disease of cassava caused by Fusarium solani

Understanding and Enhancing Soil Biological Health: The Solution for Reversing Soil Degradation

Response of soil fungi and biological processes to crop residues in no-tillage system

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