Article (Scientific journals)
Factors affecting Tan Spot on winter wheat in the Grand-Duchy of Luxembourg
El Jarroudi, Moussa; Kouadio, Amani Louis; Beyer, Marco et al.
2013In Journal of Plant Pathology, s1, p. 7-17
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Keywords :
Drechlera tritici-repentis; Cultivar; tillage methos; Disease control
Abstract :
[en] Tan spot caused by Drechslera tritici-repentis was identified for the first time in the Grand-Duchy of Luxembourg (GDL) in 1999 on the basis of morphological characters. In order to optimize disease control measures in this country, tillage methods, cultivar resistance, and fungicides effects were investigated during 1999-2009 in four sites. Over this period, only three years (i.e. 1999, 2000, and 2009) with epidemic outbreak were recorded. Field experiments showed a significant difference in disease severity between sites (P < 0.001), cultivars (P < 0.0001) and years (P < 0.001). In years with epidemic outbreak, the interaction of cultivars with non-inversion tillage, intensive winter wheat production, and favorable weather conditions caused an early outbreak of the disease and a significant severity at growth stage 83 (early dough). Non-inversion tillage was found to be a major factor increasing the tan spot severity compared to conventional tillage. Furthermore, the analysis revealed that the disease severity was related to the cultivar’s susceptibility. For cultivars with similar phenology, the severity differed between the cultivar with the highest and the one with ne lowest susceptibility by a factor of two to four. The study also showed that no fungicide (mix of triazoles and strobilurins) effect was observed in the epidemic years, except in 2000.
Research center :
Centre de Recherche Public Gabriel Lippmann
Disciplines :
Agriculture & agronomy
Author, co-author :
El Jarroudi, Moussa  ;  Université de Liège - ULiège > DER Sc. et gest. de l'environnement (Arlon Campus Environ.) > Agrométéorologie (relation agriculture-environ. physique)
Kouadio, Amani Louis 
Beyer, Marco
Giraud, Frédéric
Tychon, Bernard ;  Université de Liège - ULiège > DER Sc. et gest. de l'environnement (Arlon Campus Environ.) > Agrométéorologie (relation agriculture-environ. physique)
Delfosse, Philippe
Language :
English
Title :
Factors affecting Tan Spot on winter wheat in the Grand-Duchy of Luxembourg
Publication date :
01 July 2013
Journal title :
Journal of Plant Pathology
ISSN :
1125-4653
Publisher :
Edizioni ETS, Pisa, Italy
Volume :
s1
Pages :
7-17
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Ministère de la Recherche Luxembourgeoise, Admistration Des Services Techniques de l'Agriculture au Luxembourg
Available on ORBi :
since 24 February 2014

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