Rozdíly v citlivosti českých populací padlí tykvovitých vůči fungicidům

Kód výsledku v IS VaVaI

RIV/61989592:15310/04:00002261 - isvavai.cz

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Variation in sensitivity to fungicides in Czech populations of cucurbit powdery mildews

Popis výsledku v původním jazyce

A survey was conducted of possible fungicide resistance or tolerance of cucurbit powdery mildews, Golovinomyces cichoracearum (Gc) and Podosphaera xanthii (Px), using 55 Czech isolates (43 Gc, 12 Px) collected at eight regions from 2000-2002. The effectiveness of three frequently used fungicides, Rubigan 12 EC (fenarimol), Karathane LC (dinocap), and Fundazol 50 WP (benomyl), at five concentrations, was observed using a modified leaf-disc bioassay. Discs were prepared from adult plants of Cucumis sativus cv. Stela F1. Significant differences among fungicides and even among years were observed. Fenarimol showed a high level of effectiveness and control of powdery mildew at dosage 36 #g a.i./ml (optimal concentration). Dinocap was 100% effective in the year 2000, however it was less effective in 2001 and 2002, when 5% of the isolates overcame the registered concentration (105 #g a.i./ml). Benomyl was the least effective of the fungicides as 94% of the isolates sporulated at every tested

Název v anglickém jazyce

Variation in sensitivity to fungicides in Czech populations of cucurbit powdery mildews

Popis výsledku anglicky

A survey was conducted of possible fungicide resistance or tolerance of cucurbit powdery mildews, Golovinomyces cichoracearum (Gc) and Podosphaera xanthii (Px), using 55 Czech isolates (43 Gc, 12 Px) collected at eight regions from 2000-2002. The effectiveness of three frequently used fungicides, Rubigan 12 EC (fenarimol), Karathane LC (dinocap), and Fundazol 50 WP (benomyl), at five concentrations, was observed using a modified leaf-disc bioassay. Discs were prepared from adult plants of Cucumis sativus cv. Stela F1. Significant differences among fungicides and even among years were observed. Fenarimol showed a high level of effectiveness and control of powdery mildew at dosage 36 #g a.i./ml (optimal concentration). Dinocap was 100% effective in the year 2000, however it was less effective in 2001 and 2002, when 5% of the isolates overcame the registered concentration (105 #g a.i./ml). Benomyl was the least effective of the fungicides as 94% of the isolates sporulated at every tested

Druh

D - Stať ve sborníku

CEP obor

GF - Choroby, škůdci, plevely a ochrana rostlin

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název statě ve sborníku

Progress in Cucurbit Genetics and Breeding Research. Proceedings of Cucurbitaceae 2004, the 8th EUCARPIA Meeting on Cucurbit Genetics and Breeding.

ISBN

80-86636-04-6

ISSN

—

e-ISSN

—

Počet stran výsledku

566

Strana od-do

289-294

Název nakladatele

Univerzita Palackého

Místo vydání

Olomouc

Místo konání akce

—

Datum konání akce

—

Typ akce podle státní příslušnosti

—

Kód UT WoS článku

—