Testing the susceptibility of Leptosphaeria spp. and Sclerotinia sclerotiorum pathogens against selected fungicides

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813644%3A_____%2F16%3AN0000018" target="_blank" >RIV/47813644:_____/16:N0000018 - isvavai.cz</a>

Alternative codes found

RIV/26784246:_____/16:N0000016

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Testing the susceptibility of Leptosphaeria spp. and Sclerotinia sclerotiorum pathogens against selected fungicides

Original language description

The susceptibility of Leptosphaeria spp. and Sclerotinia sclerotiorum pathogens was tested against selected fungicides as Horizon 250 EW (a.i. tebuconazole), Efilor (a.i. boscalid, metconazole), Pictor (a.i. boscalid, dimoxystrobin) in 2013 – 2015. Tests of susceptibility were carried out at two workplaces in Šumperk and Opava. The isolates of fungal pathogens were collected from infected tissues of winter oilseed rape at commonly treated fields and from fungicidal untreated experimental plots with oilseed rape. Pure cultures of pathogens were obtained by following cultivation on solid defined medium (Czapek-Dox, PDA). Small parts of pathogen´s mycelium were placed on poisoned plates with different concentrations of active ingredients of fungicides. The initial concentration was determined based on the dose of 1 ha and the amount of spray mixture. The most tested fungicide was Horizon 250 EW, used concentration scale was 0,2; 0,4; 0,8 and 1,6 % solution of fungicide, when the concentration of 0,4 % represented the registered dose rate of Horizon 250 EW allowed in Czech republic to control fungal diseases in oilseed rape. Since 2013 there were tested about 50 isolates of Leptosphaeria maculans/ L. biglobosa and about 30 isolates of Sclerotinia sclerotiorum. All tested isolates were susceptible. Presented results were obtained from project support MZe NAZV QJ1310227.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

GF - Diseases, pests, weeds and plant protection

OECD FORD branch

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Project

<a href="/en/project/QJ1310227" target="_blank" >QJ1310227: New findings from biology, epidemiology and resistance of winter rape pathogens to pesticides in the Czech Republic as a base of their integrated management</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů