Foliar applications of fertilizer salts inhibit powdery mildew on tomato

Ehret, David L.; Menzies, J. I.; Bogdanoff, Carl; Utkhede, R. S.; Frey, Brenda

doi:10.1080/07060660209507031

Cited by 22 publications

(19 citation statements)

References 26 publications

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“…In an interesting experiment where Hoagland's solution was used as a control, the authors showed that powdery mildew repression was similar with the latter solution as with the solution made from potassium silicate. Incidentally, salt sprays, including potassium salts such as potassium carbonates and potassium phosphates, have been reported many times to reduce disease incidence with particular emphasis on powdery mildews (Reuveni and Reuveni 1995 ;Bélanger and Labbé 2002 ;Ehret et al 2002 ), an observation in line with the results obtained with Hoagland's solution. Liang et al ( 2005 ) suggested that disease reduction caused by foliar sprays of potassium silicate was the result of an osmotic effect on spores germinating at the leaf surface.…”

Section: Soil Versus Foliar Applicationssupporting

confidence: 70%

Silicon and Plant–Pathogen Interactions

Liang

Nikolić

Bélanger

et al. 2015

Silicon in Agriculture

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The benefi cial effects of silicon (Si) at preventing plant diseases have been known for many decades, and the list of plant-pathogen interactions infl uenced by Si keeps expanding. However, it is quite evident that the prophylactic properties of Si will vary greatly depending on the plant and the pathogen. The recent discovery of Si-specifi c transporters in rice roots has been instrumental in identifying plants that possessed such transporters and were thus genetically disposed to accumulate Si in their tissues and benefi t more from Si amendments. For the same reason, soil applications of Si lead to signifi cantly more Si accumulation in plant tissues than foliar applications and are likely to yield better results. An issue that has received less attention is the specifi city of Si with respect to plant pathogens. Based on the literature, there is an overwhelming abundance of reports describing the positive effects of Si against fungal pathogens compared to bacteria, virus or nematodes. Among fungal pathogens, those described as biotrophic or hemibiotrophic, such as powdery mildews and Magnaporthe grisea, appear to be better controlled by Si. The reasons behind this apparent specifi city are still unknown but recent data suggest that Si would interfere with effector proteins released by those pathogens, thus allowing the plant to mount better defence reactions. Our recent progress at understanding Si properties will contribute to optimizing its use in the context of sustainable agriculture.

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Section: Soil Versus Foliar Applicationssupporting

confidence: 70%

Silicon and Plant–Pathogen Interactions

Liang

Nikolić

Bélanger

et al. 2015

Silicon in Agriculture

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“…Some studies compare the antifungal activity of EDTA to common antifungal agents and reported EDTA exhibited the highest antifungal activity (Sen et al ., ; Ates et al ., ). The influence of EDTA on controlling mildew on tomato leaves was also reported (Ehret et al ., ). Gil et al .…”

Section: Resultsmentioning

confidence: 97%

“…Some studies compare the antifungal activity of EDTA to common antifungal agents and reported EDTA exhibited the highest antifungal activity (Sen et al, 2000;Ates et al, 2005). The influence of EDTA on controlling mildew on tomato leaves was also reported (Ehret et al, 2002). Gil et al (1994) showed the antifungal activity of EDTA is not associated with the protein and DNA synthesis, and the mechanism of this sequesterant was attributed to high-molecularweight mannoproteins (HMWM) which are myceliumspecific wall components.…”

Section: Yeast and Mould Countsmentioning

confidence: 94%

Effect of heat, nisin and ethylene diamine tetra‐acetate treatments on shelf life extension of liquid whole egg

Ahmadi

Soleimanian‐Zad

Sheikh-Zeinoddin

2015

Int J of Food Sci Tech

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This study examined the effect of nisin alone or in combination with pasteurisation or ethylene diamine tetra-acetate (EDTA), on the shelf life of unpasteurised liquid whole egg (LWE) stored at refrigerator temperature for a period of 21 days. The shelf life of samples was determined by counting total mesophilic bacteria, yeast and mould and also pH changes. It was observed that addition of 3 ppm nisin to pasteurised LWE was effective enough to extend the shelf life of this product from about 7 days to at least 21 days. However, for unpasteurised LWE nisin alone had no significant effect on shelf life while treatment of LWE with nisin in combination with EDTA showed a significant antibacterial and antifungal activity leading to extended shelf life of unpasteurised LWE from 1 to 4 days to at least 21 days.

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“…As indicated in the section above, there has been much interest in the application of fertilisers to crop foliage, including the effects of foliar fertiliser application for crop disease control (Reuveni & Reuveni, 1998;Ehret et al, 2002). Foliar-applied potassium chloride has been shown to control Blumeria graminis and Septoria tritici on wheat in fi eld studies (Cook et al, 1993;Mann et al, 2004), probably due to osmotic effects on the fungal pathogens, disrupting pathogen development and subsequent infection (Kettlewell et al, 2000;Mann et al, 2004).…”

Section: Potassium 2423mentioning

confidence: 99%

Managing Crop Disease through Cultural Practices

Walters¹

2009

Disease Control in Crops

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Foliar applications of fertilizer salts inhibit powdery mildew on tomato

Cited by 22 publications

References 26 publications

Silicon and Plant–Pathogen Interactions

Silicon and Plant–Pathogen Interactions

Effect of heat, nisin and ethylene diamine tetra‐acetate treatments on shelf life extension of liquid whole egg

Managing Crop Disease through Cultural Practices

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