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Publication type: Conference paper
Type of review: Not specified
Title: Fungicide resistance of botrytis cinerea : first results from Switzerland
Authors: Michel, Vincent
Wohler, Christian
Kopp, Max
Thoss, Hagen
Mannale, Michael
Palmisano, Marilena
et. al: No
DOI: 10.21256/zhaw-19639
Proceedings: IOBC-WPRS Bulletin Vol. 144
Page(s): 39
Pages to: 45
Conference details: 9th International IOBC/WPRS Workshop on Integrated Plant Protection of soft fruits, Riga, Latvia, 5-7 September 2018
Issue Date: 2019
Publisher / Ed. Institution: ETH Zürich
Language: English
Subjects: Multi drug resistance; Microbial resistance test; Strawberry
Subject (DDC): 570: Biology
630: Agriculture
Abstract: Resistance of Botrytis cinerea, causal agent of gray mold, to fungicides is an increasing problem in the strawberry production in Switzerland. In 2017 and 2018, a monitoring survey to assess the actual situation in four major strawberry growing cantons was conducted by the concerned cantonal extension services. Samples from fruits with typical gray mold sporulation were sent to the laboratories of Agroscope (microbial analysis) and of the Zurich University of Applied Sciences, ZHAW (molecular analysis). Samples were taken in fields of ten growers who assumed to have a resistance problem. Six-seven strains per grower were isolated and analyzed. Resistance to nine following active ingredients was assessed: boscalid, cyprodinil, fenhexamid, fenpyrazamine, fludioxonil, fluopyram, iprodione, mepanipyrim and pyrimethanil. The microbial analysis revealed that the median number of fungicide resistances per strain were 5 and 4 in 2017 and 2018, respectively. The molecular analysis showed that Multidrug resistance MDR1 and MDR1h were present in both years. The results of the survey have to be considered with care as i) only 136 strains were analyzed in total, and ii) the strains originated from fields suspected to have a fungicide resistance problem.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Restricted until: 2025-01-01
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Published as part of the ZHAW project: Botrytis Resistenzen in Erdbeerkulturen
Appears in collections:Publikationen Life Sciences und Facility Management

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