Microtiter assay shows effectiveness of a natural fungicide for control of Colletotrichum spp

Anthracnose diseases of strawberry are serious problems for fruit and plant production worldwide. New approaches to anthracnose disease control are necessary as the effectiveness and availability of commercial fungicides decreases. A micro-dilution assay was used to evaluate sensitivity profiles of...

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Bibliographic Details
Published in:Phytopathology 2006-06, Vol.96 (6), p.S189-S189
Main Authors: Wedge, DE, Smith, B J
Format: Article
Language:English
Subjects:
Colletotrichum
Fragaria
Online Access:Get full text
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Summary:Anthracnose diseases of strawberry are serious problems for fruit and plant production worldwide. New approaches to anthracnose disease control are necessary as the effectiveness and availability of commercial fungicides decreases. A micro-dilution assay was used to evaluate sensitivity profiles of Colletotrichum spp. isolates from strawberry. Sixteen agrochemicals were tested for in vitro activity against eight C. acutatum isolates, two C. fragariae isolates, and two C. gloeosporioides isolates. The most effective fungicides were azoxystrobin, cyprodinil, and chlorothalonil and provided nearly 100% growth inhibition of all ten Colletotrichum sp. isolates at 48 hr. An acaricide, quinomethionate, and the fungicides, captan and thiram, also provided near 100% growth inhibition. All 12 Colletotrichum isolates were insensitive to vinclozolin and iprodione. In addition the eight C. acutatum isolates were insensitive to benomyl and thiabendazole.
ISSN:0031-949X