Evaluation of BSPcast Disease Warning System in Reduced Fungicide Use Programs for Management of Brown Spot of Pear

Llorente, Isidre; Vilardell, P.; Bugiani, R.; Gherardi, I.; Seguí, Emilio Montesinos

doi:10.1094/pdis.2000.84.6.631

Cited by 47 publications

(23 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It will provide strawberry growers with a valuable tool to achieve a better-integrated management of the crop (Montesinos et al, 1995;Llorente et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Relationship between Concentrations of Botrytis Cinerea Conidia in Air, Environmental Conditions, and the Incidence of Grey Mould in Strawberry Flowers and Fruits

2006

View full text Add to dashboard Cite

Atmospheric concentrations of Botrytis cinerea conidia were monitored for two seasons in a strawberry crop in Moguer (Huelva, southwestern Spain). Concentrations of conidia were estimated using a Burkard volumetric spore sampler. A diurnal pattern of conidial release was observed. Airborne conidial concentration was significantly and positively correlated with the average solar radiation and mean temperature, and negatively with rainfall and relative humidity. Among the weather variables considered, solar radiation showed the most consistent results in the regression analysis, explaining over 40% of airborne conidial concentration variability. Correlation between Botrytis fruit rot incidence and accumulated number of conidia over seven days was significant and positive. Two regression models containing three variables explained over 62 and 52% of the fruit rot incidence variability. A positive but non-significant correlation was established between B. cinerea incidence in flowers and airborne conidial concentration. It was not possible to fit a consistent regression model to relate flower infection incidence to conidial concentration or weather variables.

show abstract

“…It will provide strawberry growers with a valuable tool to achieve a better-integrated management of the crop (Montesinos et al, 1995;Llorente et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Relationship between Concentrations of Botrytis Cinerea Conidia in Air, Environmental Conditions, and the Incidence of Grey Mould in Strawberry Flowers and Fruits

2006

View full text Add to dashboard Cite

show abstract

“…Epidemic disease progress occurs when there is a combination of both suitable environmental conditions for infection and high spore densities (Montesinos et al, 1995a). An infection model based on temperature and wetness duration was developed (Montesinos et al, 1995b), which proved to be accurate and robust in determining infection periods (Bugiani and Gherardi, 1998;Llorente et al, 2000aLlorente et al, , 2000b. Nevertheless, the model gives unjustified alarms when available spores are at low levels (Bugiani et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Patterns of airborne conidia of Stemphylium vesicarium, the causal agent of brown spot disease of pears, in relation to weather conditions

et al. 2005

View full text Add to dashboard Cite

Seven-day volumetric spore samplers were installed in pear orchards of northern Italy, in the years between 1993 and 2002, and operated continuously during the development of brown spot epidemics (mid-April-mid-August), caused by Stemphylium vesicarium. Aerial concentration of conidia was recorded at 2 h intervals to study their diurnal and seasonal patterns and the influence of weather conditions. The diurnal periodicity of aerial conidia showed a peak around midday and low counts in the dark. The increase in spore concentration was significantly correlated with the reduction of relative humidity and wetness in early morning, and the increase of wind in late morning and afternoon. Conidia of S. vesicarium became easily airborne to form a regular component of the air-spora in pear orchards, while ascospores were caught only sporadically. Differences between years concerned total spore counts and numbers of peaks (defined as days with more than 30 conidia/m 3 air per day). Periods with highest spore counts occurred in late-May to early-June (in 2 years), mid to end of June (5 years), or after midJuly (3 years). There was a significant correlation between spore peaks and days with favourable weather conditions, defined as days with air temperature between 15 and 25°C and high humidity, particularly a wet period longer than 10 h. Occurrence of one or more consecutive days with favourable weather conditions determined an increase in the airborne concentration of conidia, which usually lasted some days and then decreased.

show abstract

“…Methods have been developed against the pear pathogen to reduce the inoculum potential of the overwintering pathogen, and an infection model for prediction is available also for pear (Llorente et al 2000(Llorente et al , 2010. To establish management methods for Welsh onion leaf blight, we investigated the life cycle of S. vesicarium, the causal agent of this disease in terms of (1) seasonal occurrence of the disease, (2) seasonal fluctuation of spore dispersal, (3) formation period of pseudothecia and (4) overwintering.…”

Section: Introductionmentioning

confidence: 99%

The life cycle of Stemphylium vesicarium, the causal agent of Welsh onion leaf blight

Misawa

Yasuoka

2011

J Gen Plant Pathol

View full text Add to dashboard Cite

Symptoms of Welsh onion leaf blight, caused by Stemphylium vesicarium, are divided into two types, i.e., brown oval lesions and yellow mottle lesions. Yellow mottle lesions exert considerable economic damage on Welsh onion in northern Japan. In this study, we investigated the life cycle of the pathogen in terms of seasonal fluctuation of spore dispersal and its relationship with development of disease, formation period of pseudothecia and overwintering of the pathogen based on field surveys, spore trapping and fungal isolation. Conidia were trapped throughout the cropping season except before mid June, when no ascospores were trapped. Brown oval lesions, which contained a large number of conidia, usually occurred in July followed by yellow mottle lesions with an increasing number of conidia trapped. These observations suggest that conidia released from brown oval lesions play an important role as a secondary inoculum source of the disease, leading to the development of yellow mottle lesions. Pseudothecia on leaves were first observed at the end of the cropping season or immediately after harvest (late October). The pathogen overwintered in the form of pseudothecia produced on leaves with or without symptoms. Ascospores failed to be trap in the field during the interval between before and beginning of the cropping season in April-May. However, pot experiments demonstrated that ascospores were released from leaf debris in November and rapidly increased in number after snow melt. From this circumstantial evidence, we hypothesize that ascospores are the primary inoculum source of Welsh onion leaf blight.

show abstract

Evaluation of BSPcast Disease Warning System in Reduced Fungicide Use Programs for Management of Brown Spot of Pear

Cited by 47 publications

References 18 publications

Relationship between Concentrations of Botrytis Cinerea Conidia in Air, Environmental Conditions, and the Incidence of Grey Mould in Strawberry Flowers and Fruits

Relationship between Concentrations of Botrytis Cinerea Conidia in Air, Environmental Conditions, and the Incidence of Grey Mould in Strawberry Flowers and Fruits

Patterns of airborne conidia of Stemphylium vesicarium, the causal agent of brown spot disease of pears, in relation to weather conditions

The life cycle of Stemphylium vesicarium, the causal agent of Welsh onion leaf blight

Contact Info

Product

Resources

About