Article (Scientific journals)
Site-specific Septoria Leaf Blotch Risk Assessment in Winter Wheat using Weather-Radar Rainfall Estimates
Mahtour, Abdeslam; El Jarroudi, Moussa; Delobbe, Laurent et al.
2011In Plant Disease, 10.1094/PDIS-07-10-0482
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Keywords :
Weather-Radar Rainfall; Septoria Leaf Blotch; Winter Wheat; PROCULTURE; Warning systems
Abstract :
[en] The Septoria leaf blotch prediction model PROCULTURE was used to assess the impact on simulated infection rates when using rainfall estimated by radar instead of rain gauge measurements. When comparing infection events simulated by PROCULTURE using radar- and gauge-derived data, the probability of detection (PODs) of infection events was high (0.83 on average), and the false alarm ratio (FARs) of infection events was not negligible (0.24 on average). For most stations, FARso of infection events decreased to 0 and PODso increased (0.85 on average) when the model outputs for both datasets were compared against visual observations of disease symptoms. An analysis of 148 infection events over three years at four locations showed no significant difference in the number of infection events of simulations using either dataset, indicating that, for a given location, radar estimates were as reliable as rain gauges for predicting infection events. Radar also provided better estimates of rainfall occurrence over a continuous space than weather station networks. The high spatial resolution provides radar with an important advantage that could significantly improve existing warning systems.
Research center :
ULg - Université de Liège
Disciplines :
Environmental sciences & ecology
Agriculture & agronomy
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Mahtour, Abdeslam ;  Université de Liège - ULiège > Doct. sc. (sc. & gest. env. - Bologne)
El Jarroudi, Moussa  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement
Delobbe, Laurent
Hoffmann, Lucien
Maraite, Henri
Tychon, Bernard ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement
Language :
English
Title :
Site-specific Septoria Leaf Blotch Risk Assessment in Winter Wheat using Weather-Radar Rainfall Estimates
Publication date :
2011
Journal title :
Plant Disease
ISSN :
0191-2917
Publisher :
American Phytopathological Society
Volume :
10.1094/PDIS-07-10-0482
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 January 2011

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