Effects of drip irrigation on population of Verticillium dahliae in olive orchards

Verticillium wilt of olive (Olea europaea L.), caused by Verticillium dahliae, is nowadays the most serious olive disease in Spain. The disease increments are being observed particularly in young olive plantations, favoured by several factors including inadequate cultural practices and crop producti...

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Bibliographic Details
Published in:Journal of phytopathology 2005-04, Vol.153 (4), p.238-239
Main Authors: Lopez-Escudero, F.J, Blaco-Lopez, M.A
Format: Article
Language:English
Subjects:
Biological and medical sciences
drip irrigation
fruit trees
Fundamental and applied biological sciences. Psychology
Fungal plant pathogens
inoculum density
microirrigation
Olea europaea
olive
olives
orchards
Phytopathology. Animal pests. Plant and forest protection
plant pathogenic fungi
soil fungi
Verticillium
Verticillium dahliae
Verticillium wilt
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Summary:Verticillium wilt of olive (Olea europaea L.), caused by Verticillium dahliae, is nowadays the most serious olive disease in Spain. The disease increments are being observed particularly in young olive plantations, favoured by several factors including inadequate cultural practices and crop production intensification, such as irrigation. Thus, three olive orchards affected by Verticillium wilt, with disease incidence ranging 30–50%, were selected to determine if the drip irrigation could favour the increase of pathogen in soil. Pathogen in soil was quantified in wet zones around the drippers and in dry zones out of them. Inoculum density in all experiments was higher in wet than in dry areas. After 4 months of watering, soil pathogen population increased considerably in wet and dry areas but inoculum density remained higher in the wet soil.
ISSN:0931-1785
1439-0434
DOI:10.1111/j.1439-0434.2005.00961.x