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Site-specific risk factors of white mould epidemics in bean (Phaseolus vulgaris) in Tasmania, Australia

Citation

Jones, SJ and Gent, DH and Pethybridge, SJ and Hay, FS, Site-specific risk factors of white mould epidemics in bean (Phaseolus vulgaris) in Tasmania, Australia, New Zealand Journal of Crop and Horticultural Science, 40, (3) pp. 147-159. ISSN 0114-0671 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 The Royal Society of New Zealand

DOI: doi:10.1080/01140671.2011.623707

Abstract

In Tasmania, Australia, if more than 5% of bean pods are affected by white mould (Sclerotinia sclerotiorum) shipments may be rejected by the processor. This standard dictates prophylactic fungicide application over flowering, although in some instances treatment may not be warranted because oflow disease risk. Surveys were conducted to identify relationships among edaphic factors, weather variables, and production practices associated with white mould. Correlations were found between disease incidence and the number of apothecia, fungicide timing, and mean minimum air temperature in the 10- and 30-day periods preceding harvest. Significant differences in disease incidence also were detected among cultivars and bean canopy densities. A nonparametric discriminant analysis model based on the predictor variables ofmean minimum air temperature in the 10- and 30-day periods before harvest, cultivar, bean canopy density, and fungicide application correctly predicted presence of white mould on pods in 77% of bean fields. Several factors that can be manipulated to reduce disease risks were identified.

Item Details

Item Type:Refereed Article
Keywords:disease forecasting, quantitative epidemiology
Research Division:Agricultural and Veterinary Sciences
Research Group:Horticultural Production
Research Field:Horticultural Crop Protection (Pests, Diseases and Weeds)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural Crops
Objective Field:Vegetables
Author:Jones, SJ (Dr Suzie Jones)
Author:Gent, DH (Dr David Gent)
Author:Pethybridge, SJ (Dr Sarah Pethybridge)
Author:Hay, FS (Dr Frank Hay)
ID Code:71352
Year Published:2012
Web of Science® Times Cited:2
Deposited By:Agricultural Science
Deposited On:2011-07-14
Last Modified:2013-05-13
Downloads:0

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