Effect of Organic Amendment on Soil-Borne Plant Pathogens

Huber, D. M.; Watson, R. D.

doi:10.1094/phyto-60-22

Cited by 82 publications

(29 citation statements)

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“…The apparent difference among the amendments in their ability to suppress the disease may be due to their content of antimicrobial substances and their diffusibility into the soil. Huber and Watson (1970) suggested that organic matter influences the severity of soil-borne diseases by (i) increasing the biological buffering capacity of the soil; (ii) reducing the pathogen numbers during anaerobic decomposition of organic matter; and (iii) exerting an effect on nitrification which affects the form of nitrogen predominating in the soil. In the case of common scab of potato, Gotou and Nakamura (1993) reported that the application of organic matter containing vegetable protein at the rate of 10 Mg ha-1 to the field decreased the incidence of the disease.…”

Section: Resultsmentioning

confidence: 99%

Medicinal plants for suppressing soil-borne plant diseases

Ushiki

Tahara

Hayakawa

et al. 1998

Soil Science and Plant Nutrition

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Section: Resultsmentioning

confidence: 99%

Medicinal plants for suppressing soil-borne plant diseases

Ushiki

Tahara

Hayakawa

et al. 1998

Soil Science and Plant Nutrition

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“…Various methods of disease management including varietal resistance (Pemberton 1994), chemical treatments (Davis et al 1974), organic amendments (Huber and Watson 1970), strategic irrigation (Lapwood and Adams 1973), crop rotation and soil treatment (Hooker 1990) have been recommended so far. However, even after several decades of efforts, none of the measures have been able to provide an effective control of the scab disease.…”

Section: Introductionmentioning

confidence: 99%

Determining Specific Window Period for Common Scab Disease Infection in Potato Tubers

Khatri

Tegg

Brown

et al. 2017

J. Nep. Agric. Res. Counc.

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A series of experiments was conducted under glasshouse and hydroponic conditions to determine the specific window period for common scab disease infection in potato tubers. The study was performed in a glasshouse system where separate tubers from the root zone were inoculated at different intervals during plant growth along with a novel hydroponic system to inoculate individual tubers at specific times of development growth allowing non-destructive observations of common scab symptoms developing. The window of tuber susceptibility to common scab disease infection was shown to vary with the season or conditions under which the plants were grown. Different internodes on tubers were found susceptible to infection at different times during tuber development. Basal internodes, which are the first sections of the tuber to expand, were susceptible to infection in the beginning of tuber development, whereas apical internodes only became susceptible later in tuber growth when the basal internodes were no longer susceptible.

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“…Some studies have shown that manure as well as some other types of organic matter may reduce the severity and incidence of some plant diseases (Hadar et al 1992;Huber and Watson 1970). Although the mechanisms of disease suppression associated with organic matter are not fully understood, it has been postulated that such material could affect both the viability and survival of plant pathogens through the restriction of available nutrients, the release of antimicrobial substances (Bailey and Lazarovits 2003), or the modification of soil properties (Keinath and Loria 1989;Pennypacker 1989).…”

Section: Introductionmentioning

confidence: 99%

Dehydrated pork manure by-product: effect of a chitosan amendment on bacterial community and common scab incidence

Roy

Lafontaine²,

Chabot³

et al. 2011

phyto

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Chitosan amendment modified the composition of a microbial community associated with dehydrated pork manure by-product. The amended product (biosolid PC) contained a lower number of anaerobic bacteria than the non-amended product (biosolid P). Chitosan also significantly reduced the fungal population. A 16S rRNA gene bank constructed from DNA extracted from the bacterial community associated with both P and PC biosolids revealed that bacterial ordersXanthomonodales,Pseudomonadales,Enterobacteriales,Burkholderiales,Actinomycetales,Bacillales,ClostridialesandLactobacillaleswere found in both biosolids. Bacteria from theStenotrophomonasgenus were abundant in both biosolids. However, the addition of chitosan appeared to induce changes in the population of some bacterial genera. For example, clones carrying a 16S rRNA gene corresponding to theBacillusgenus were doubled in biosolid PC. In field trials carried out to test their effect on common scab incidence, biosolids P and PC were applied as potato seed treatment. Biosolid P increased disease incidence by a factor of 1.33 and 2.85 in two independent experiments. However, when chitosan was added to the seed treatment, the stimulating effect of biosolid P on common scab was cancelled out.

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Effect of Organic Amendment on Soil-Borne Plant Pathogens

Cited by 82 publications

References 0 publications

Medicinal plants for suppressing soil-borne plant diseases

Medicinal plants for suppressing soil-borne plant diseases

Determining Specific Window Period for Common Scab Disease Infection in Potato Tubers

Dehydrated pork manure by-product: effect of a chitosan amendment on bacterial community and common scab incidence

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