Diseases of Chrysanthemum

Trolinger, Jane C.; McGovern, Robert J.; Elmer, Wade H.; Rechcigl, Nancy A.; Shoemaker, Christine M.

doi:10.1007/978-3-319-32374-9_16-1

Cited by 11 publications

(14 citation statements)

References 143 publications

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“…Wilting was not observed, but this symptom can be a function of temperature . Consistent temperatures above 32 °C are more associated with wilt symptoms . In 2017, 2018, and 2020 only 8, 21, and 30 days had temperatures above 32 °C, respectively, which represented less than 7, 17, and 25% of the total growing days (June–September) in those years.…”

Section: Resultsmentioning

confidence: 88%

“…Nanoscale Mn 2 O 3 and Fludioxonil were effective in reducing disease severity in 2017 and 2020. It is not uncommon for contact fungicides to be ineffective in reducing Fusarium wilt development, which emphasizes the urgent need for other control measures . Nanoscale ZnO had no effect on Fusarium wilt development.…”

Section: Resultsmentioning

confidence: 99%

“…The disease is insidious, occurs wherever chrysanthemums are grown, and in a warm climate can result in over 50% loss . Symptoms vary depending on temperature and frequently do not appear until later in the growing cycle, thereby costing time and money. , In warm regions where average temperatures are above 32 °C, wilting is a common symptom, but stunting and necrosis are more common in temperate climates . Host resistance is not available in many cultivars, and fungicide applications as pot drenches provide only partial control .…”

Section: Introductionmentioning

confidence: 99%

“…Symptoms vary depending on temperature and frequently do not appear until later in the growing cycle, thereby costing time and money. , In warm regions where average temperatures are above 32 °C, wilting is a common symptom, but stunting and necrosis are more common in temperate climates . Host resistance is not available in many cultivars, and fungicide applications as pot drenches provide only partial control . As noted above, certain nanoscale nutrients can effectively provide disease resistance and promote growth in food crops.…”

Section: Introductionmentioning

confidence: 99%

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Foliar Application of Copper Oxide Nanoparticles Suppresses Fusarium Wilt Development on Chrysanthemum

Elmer

Zuverza‐Mena

Triplett

et al. 2021

Environ. Sci. Technol.

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Micronutrients applied as nanoparticles of metal oxides have shown efficacy in vegetable and other crops for improving yield and reducing Fusarium diseases, but their role in ornamental crop management has not been investigated. In 2017, 2018, and 2020, nanoparticles of CuO, Mn 2 O 3 , or ZnO were foliarly applied at 500 μg/mL (0.6 mg/plant) to chrysanthemum transplants and planted in potting soil noninfested or infested with Fusarium oxysporum f. sp. chrysanthemi. An untreated control and a commercial fungicide, Fludioxonil, was also included. Chrysanthemums treated with nanoscale CuO had a 55, 30, and 32% reduction in disease severity ratings compared to untreated plants in 2017, 2018, and 2020, respectively. Specifically, the average dry biomass for the three years was reduced 22% by disease, but treatment with nanoscale CuO led to a 23% increase when compared to controls. Similar trends with plant height were observed. Horticultural quality was improved 28% with nano CuO and was equal to the fungicide. Nanoscale Mn 2 O 3 and the fungicide did not consistently reduce disease ratings or increase dry biomass each year. Nanoscale ZnO was ineffective. Nanoscale CuO-treated plants had 24 to 48% more Cu/ g tissue than controls (P < 0.001). These findings agree with past reports on food crops where single applications of nanoscale CuO improved plant health, growth, and yield and could offer significant impacts for managing plant diseases on ornamentals.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Foliar Application of Copper Oxide Nanoparticles Suppresses Fusarium Wilt Development on Chrysanthemum

Elmer

Zuverza‐Mena

Triplett

et al. 2021

Environ. Sci. Technol.

Self Cite

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show abstract

“…The plants may be infected by a variety of pathogens, including Alternaria spp., Ascochyta chrysanthemi , Botrytis cinerea , Fusarium spp., Puccinia spp., Septoria spp. and Verticillium albo‐atrum (Trolinger et al., 2017). Of these, Fusarium species are devastating pathogens causing stem, crown or root rot and wilt on chrysanthemum and leading to significant losses, especially in warm climates (Locke et al., 1985; Mun et al., 2012).…”

Section: Figurementioning

confidence: 99%