Sources, survival and management of Pestalotiopsis sydowiana on Calluna vulgaris nurseries

McQuilken, M. P.; Hopkins, K.E.

doi:10.1016/s0261-2194(01)00028-x

Cited by 5 publications

(12 citation statements)

References 9 publications

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“…Approximately 11–19% of soils collected from nurseries A and B were infested with P sydowiana (Table 2). 12 Used materials were often contaminated with the pathogen in both nurseries. The pathogen was isolated directly from used growing media ( ca 28–34% of samples) and media debris removed from used pots (21–35% of samples).…”

Section: Resultsmentioning

confidence: 99%

“…Primary sources of P sydowiana within ericaceous plant nurseries have been clearly identified 12. These included diseased stock plants, soil, used pots and propagation trays, floor covering, and dust collected from glasshouse walkways.…”

Section: Discussionmentioning

confidence: 99%

“…The isolation of P sydowiana from the upper foliage of stock plants emphasises the danger of infected cuttings acting as potential sources of P sydowiana infection. In previous studies, it was shown that infection of cuttings by P sydowiana was initiated from a range of artificially contaminated or infected sources of the pathogen 12. It is likely that such sources also have the ability to initiate infections of potted plants by the pathogen.…”

Section: Discussionmentioning

confidence: 99%

“…It is likely that such sources also have the ability to initiate infections of potted plants by the pathogen. The presence of P sydowiana on used pots and propagation trays from the previous crop indicates that the pathogen can survive in deposits of dry growing medium 12. Binucleate Rhizoctonia , another important pathogen of ericaceous crops, is also known to survive in deposits of growing medium on polythene sheeting, dirty pots and propagation trays 14, 17.…”

Section: Discussionmentioning

confidence: 99%

“…Disease control may be more effective if based on knowledge of the biology, and potential sources and survival of the pathogen. During the last eight years, work has been in progress at SAC to study the aetiology and biology of Pestalotiopis , and to devise an integrated control programme for the disease on ericaceous crops 10–12. The important findings of this investigation are reviewed here.…”

Section: Introductionmentioning

confidence: 99%

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Biology and integrated control of Pestalotiopsis on container‐grown ericaceous crops

McQuilken

Hopkins

2004

Pest Management Science

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Pestalotiopsis isolates obtained from the foliage, stem-base and roots of diseased container-grown ericaceous crops (Calluna, Erica, Pieris and Rhododendron) collected from UK nurseries were identified as Pestalotiopsis sydowiana (Bresad) B Sutton on the basis of conidia morphology. Inoculum sources of the pathogen included diseased stock plants, crop debris, nursery soils, used growing media, pots and floor covering, and dust collected from greenhouse walkways. Isolates were not host-specific and infected other species of ericaceous plants, with typical symptoms including browning of foliage, stems and roots, and the presence of black or greenish black acervuli on diseased tissue. The optimum temperature for growth of three selected isolates of the pathogen was 20-25 degrees C, with little or no growth occurring below 5 or above 30 degrees C. Growth occurred over pH 2.6-8.6, with optimum at 5.5. Decreases in matric potential from -0.3 to -4.0 MPa reduced growth, which was totally inhibited at -6.5 MPa. Greenhouse trials were conducted to evaluate the effects of disease management methods (irrigation, flooring/pot disinfection and fungicide application) on control of the pathogen on potted plants of C vulgaris. Disease incidence and foliar browning caused by P sydowiana were less on fungicide-treated (five-spray programme of alternating prochloraz and carbendazim) potted plants watered by sub-irrigation compared with watering from overhead. Single and combined treatments of flooring/pot disinfection (hydrogen peroxide/peracetic acid) and the five-spray fungicide programme significantly reduced disease incidence and severity compared with dipping pots in water. The combined disinfection and fungicide programme significantly reduced disease incidence and severity, compared to disinfection or fungicide application alone. The importance of these findings for the integrated control of P sydowiana on ericaceous plant nurseries is discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biology and integrated control of Pestalotiopsis on container‐grown ericaceous crops

McQuilken

Hopkins

2004

Pest Management Science

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Model-based evaluation of management options in ornamental plant nurseries

Ruett

Whitney

Luedeling

2020

Journal of Cleaner Production

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Rooting of 'GF677' (almond × peach hybrid) hardwood cuttings in relation to hydrogen hyperoxide, moisture content, oxygen concentration, temperature and pH of substrate

Tsipouridis¹,

Thomidis²

2004

Aust. J. Exp. Agric.

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In this study, the influence of water content, temperature, oxygen concentration and pH of perlite substrate and H 2 O 2 treatments on the rooting percentage of GF677 hardwood cuttings was examined. The best moisture level was 100 mL in 500 mL perlite; this resulted in 100% rooting. The observations showed that even pure O 2 did not reduce callusing or, possibly, rooting and it gave similar results as 21% O 2 . There was no indication of a promotory effect. No rooting or callusing was observed in N, 5% CO 2 or 5% O 2 treatments. There were significant differences in the responses to temperature and pH levels. The best temperature was 29°C, while the best pH levels were between 3 and 5. Cuttings in media with higher pH levels (7-8) rooted less successfully. The results also showed that H 2 O 2 possibly had an effect on the rooting percentage of cuttings. Rooting of 'GF677' (almond × × peach hybrid) hardwood cuttingsin relation to hydrogen hyperoxide, moisture content, oxygen concentration, temperature and pH of substrate

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Sources, survival and management of Pestalotiopsis sydowiana on Calluna vulgaris nurseries

Cited by 5 publications

References 9 publications

Biology and integrated control of Pestalotiopsis on container‐grown ericaceous crops

Biology and integrated control of Pestalotiopsis on container‐grown ericaceous crops

Model-based evaluation of management options in ornamental plant nurseries

Rooting of 'GF677' (almond × peach hybrid) hardwood cuttings in relation to hydrogen hyperoxide, moisture content, oxygen concentration, temperature and pH of substrate

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