Effect of environmental parameters on clubroot development and the risk of pathogen spread

Gossen, B. D.; Deora, Abhinandan; Peng, Gary; Hwang, Sheau‐Fang; McDonald, Mary Ruth

doi:10.1080/07060661.2013.859635

Cited by 51 publications

(50 citation statements)

References 77 publications

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“…It should be noted, however, that the levels of exchangeable Ca, Mg, and K, as well as assimilable P, in the soils of both groups G1 and G2 were high and not limited to the production of cauliflower. Boron levels were higher in samples with higher disease severity, in contrast to previous reports (Dixon 1996;Gossen et al 2014;Webster and Dixon 1991). Boron, although often associated with reduced severity of clubroot and increased crop yield (Dixon 2009b;Ruaro et al 2009), did not show a relationship with a reduction in the disease in the present study.…”

Section: Discussioncontrasting

confidence: 98%

“…italica Plenck), and canola (B. napus L.) (Dixon 2009a;Gossen et al 2014). botrytis L.), bok choy (B. pekinensis L.), broccoli (B. oleracea L. var.…”

unclassified

“…The severity of disease and subsequent losses are related to the pathogen population (e.g., inoculum density and distribution), host plant (level of susceptibility and life cycle), and to physical (texture, humidity, and temperature), chemical (pH and levels of Ca, N, and B), and biological (macro-and microflora) factors of the soil (Dixon 2009b;Donald and Porter 2009;Gossen et al 2014;Sharma et al 2011). The losses caused by clubroot in susceptible crops are increased by sequential planting of host species, frequent soil turning, movement of machinery and implements, and regular irrigation, which increase pathogen survival and dissemination and subsequent plant infection.…”

mentioning

confidence: 99%

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Soil Factors Related to the Severity of Clubroot in Rio de Janeiro, Brazil

et al. 2017

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Soil pH and calcium levels are determining factors in the success or failure of managing clubroot during the cultivation of Brassica spp. The aim of the present study was to evaluate the influence of soil attributes in tropical regions on the development of roots and clubroot and the accumulation of biomass and nutrients in cauliflower. One hundred and fifty-one samples of soil and plants were collected from 16 family farms that have a history of more than 50 years of regular cauliflower cultivation in Nova Friburgo, Rio de Janeiro, Brazil. Chemical and physical analyses were performed on the soil samples, and the severity of clubroot and the accumulation of biomass and

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Section: Discussioncontrasting

confidence: 98%

“…italica Plenck), and canola (B. napus L.) (Dixon 2009a;Gossen et al 2014). botrytis L.), bok choy (B. pekinensis L.), broccoli (B. oleracea L. var.…”

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confidence: 99%

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Soil Factors Related to the Severity of Clubroot in Rio de Janeiro, Brazil

et al. 2017

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“…The high levels of P. brassicae DNA found in the archived soil samples indicate great potential for transmission of P. brassicae inoculum between fields via infected soil carried by farm equipment (Cao et al 2009;Gossen et al 2014;Strelkov and Hwang 2014). Wind erosion is another important transmission pathway, as substantial amounts of inoculum are present in wind-blown dust from infested fields (Rennie et al 2015).…”

Section: Discussionmentioning

confidence: 99%

Quantitative PCR shows propagation of Plasmodiophora brassicae in Swedish long term field trials

Jonsson¹,

Marzec-Schmidt²,

Börjesson³

et al. 2016

Eur J Plant Pathol

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“…However, it is important to note that this study was conducted under conditions where inoculum pressure was high, and high levels of soil moisture were maintained from inoculation until assessment. Under field conditions, sandy soils drain more rapidly and dry out more quickly than mineral or peat soils, which would almost certainly reduce clubroot infection and subsequent symptom development in many situations (Narisawa et al ., ; Rastas et al ., ; Gossen et al ., ). However, these results do demonstrate that infection and symptom development can occur in many soils when inoculum pressure is high and moisture levels are adequate.…”

Section: Discussionmentioning

confidence: 97%

Effect of soil type, organic matter content, bulk density and saturation on clubroot severity and biofungicide efficacy

et al. 2016

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Growth room experiments were conducted to assess the interaction of soil type, biofungicides, soil compaction and pathotype/host on infection and symptom development caused by Plasmodiophora brassicae, the cause of clubroot on Brassica spp. In two initial experiments, four soil types (peat soil, mineral soil, non‐calcareous sand, soil‐less mix), two biofungicides (Bacillus subtilis, Clonostachys rosea), and two pathotypes (3 and 6, Williams’ differential set) were assessed. Differences in clubroot severity associated with soil type were unexpectedly small and variable. Prestop (C. rosea) was often more effective than Serenade (B. subtilis) at reducing clubroot levels on peat and mineral soils, but less effective than Serenade on sand. Inoculation with pathotype 3 often resulted in a slightly higher mean severity than pathotype 6. The interaction of soil type × biofungicide was similar on both canola (B. napus) and Shanghai pak choy (B. rapa subsp. chinensis), whether the soil was kept saturated or allowed to drain after inoculation. The impact of soil type on biofungicide efficacy might explain, in part, why biofungicides are more effective in one location than another. The observation that clubroot severity in soil‐less mix was affected by compaction led to an investigation of soil bulk density. Severity was higher in soil‐less mix that was more compacted than in the initial experiments, and was lower in peat and mineral soils when soil bulk density was reduced by adding soil‐less mix. In this study, soil bulk density had a larger impact on clubroot than soil type, organic matter or pathotype.

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Effect of environmental parameters on clubroot development and the risk of pathogen spread

Cited by 51 publications

References 77 publications

Soil Factors Related to the Severity of Clubroot in Rio de Janeiro, Brazil

Soil Factors Related to the Severity of Clubroot in Rio de Janeiro, Brazil

Quantitative PCR shows propagation of Plasmodiophora brassicae in Swedish long term field trials

Effect of soil type, organic matter content, bulk density and saturation on clubroot severity and biofungicide efficacy

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