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Assessing the adequacy of the simulation model LATEBLIGHT under Nicaraguan conditions

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Title Assessing the adequacy of the simulation model LATEBLIGHT under Nicaraguan conditions
 
Creator Blandon-Diaz, J.U.
Forbes, G.
Andrade-Piedra, J.L.
Yuen JE
 
Subject agriculture
climate
disease prevention
 
Description In this study, the adequacy of the late blight simulation model LATEBLIGHT (version LB2004) was evaluated under Nicaraguan conditions. During 2007 to 2008, five field experiments were conducted in three potato-production regions in northern Nicaragua. Two susceptible (‘Cal White’ and ‘Granola’) and one resistant (‘Jacqueline Lee’) potato cultivars were evaluated without use of fungicides and with three application intervals (4, 7, and 14 days) of the fungicide chlorothalonil. The simulation model was considered adequate because it accurately predicted high disease severity in susceptible cultivars without fungicide protection, and demonstrated a decrease in the disease progress curves with additional fungicide applications, similar to that observed in the plots. The model also generally predicted inadequate fungicide control, even with a 4-day spray interval, which also occurred in the field. Lack of adequate fungicide protection would indicate the need for cultivars with higher levels of durable resistance, and that farmers should consider more effective fungicides applications (higher dosages or different chemistries) if susceptible cultivars are used.
 
Date 2011-07
2014-02-19T07:59:20Z
2014-02-19T07:59:20Z
 
Type Journal Article
 
Identifier Blandon-Diaz JU, Forbes GA, Andrade-Piedra JL, Yuen JE. 2011. Assessing the adequacy of the simulation model LATEBLIGHT under Nicaraguan conditions. Plant Disease 95 (7): 839-846.
0191-2917
1943-7692
https://hdl.handle.net/10568/34923
https://doi.org/10.1094/PDIS-10-10-0702
 
Language en
 
Rights Open Access
 
Publisher Scientific Societies
 
Source Plant Disease