El Jarroudi, Moussa and Kouadio, Louis 
ORCID: https://orcid.org/0000-0001-9669-7807 and Delfosse, Philippe and Giraud, Frederic and Junk, Jurgen and Hoffmann, Lucien and Maraite, Henri and Tychon, Bernard
(2012)
Typology of the main fungal diseases affecting winter wheat in the Grand Duchy of Luxembourg.
Journal of Agricultural Science and Technology A, 2 (12).
pp. 1386-1399.
Abstract
Over the 2003-2009 period, field campaigns were carried out in order to identify the main fungal diseases of winter wheat (Triticum aestivum) in the Grand-Duchy of Luxembourg. Four fungal diseases (septoria leaf blotch (SLB), wheat leaf rust (WLR), wheat powdery mildew (WPM) and fusarium head blight (FHB)) were observed and a regional-based typology was established according to their severity and prevalence. In the Gutland (South), SLB severity was strong (about 51% on average) and higher than the severity (about 16%) prevailing in the Oesling (North). Similar typology was observed with the WLR: high severity in the Gutland (66% and 57% for the years 2003 and 2007, respectively) and low severity (< 1%) in the Oesling. The FHB was also present in the Eastern part of the Gutland, with a prevalence and severity significantly higher (P = 0.049 and P = 0.012, respectively, Tukey's test) compared with their values in the Oesling. On the other hand, the WPM severity was high in the Oesling (15% to 40%) while less than 1% in the Gutland. Such a study is important for the spatial mapping of wheat fungal diseases risk based on agroclimatic parameters and for defining optimal frequencies and dates of chemical treatments.
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