Dynamics of cercospora leaf spot disease determined by aerial spore dispersal in artificially inoculated sugar beet fields

2021 ◽  
Author(s):  
Frederike Imbusch ◽  
Sebastian Liebe ◽  
Tobias Erven ◽  
Mark Varrelmann
Keyword(s):  
Sugar Beet ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Spore Dispersal ◽  
Cercospora Leaf Spot ◽  
Spot Disease

scholarly journals Extending the CSM-CERES-Beet Model to Simulate Impact of Observed Leaf Disease Damage on Sugar Beet Yield

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1930
Author(s):  
Emir Memic ◽  
Simone Graeff-Hönninger ◽  
Oliver Hensel ◽  
William D. Batchelor
Keyword(s):  
Sugar Beet ◽  
Leaf Area ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Root Weight ◽  
Storage Root ◽  
Cercospora Leaf Spot ◽  
Area Index ◽  
Spot Disease ◽  
The Impact

A CSM-CERES-Beet pest damage routine was modified to simulate the impact of Cercospora leaf spot disease effects on sugar beet yield. Foliar disease effects on sugar beet growth and yield were incorporated as daily damage to leaf area and photosynthesis, which was linked to daily crop growth and biomass accumulation. An experiment was conducted in Southwest Germany (2016–2018) with different levels of disease infection. Data collected included time-series leaf area index, top weight, storage root weight and Cercospora leaf spot disease progress. The model was calibrated using statistical and visual fit for one treatment and evaluated for eight treatments over three years. Model performance of the calibration treatment for all three variables resulted in R2 values higher than 0.82 and d-statistics higher than 0.94. Evaluation treatments for all three observation groups resulted in high R2 and d-statistics with few exceptions mainly caused by weather extremes. Root mean square error values for calibration and evaluation treatments were satisfactory. Model statistics indicate that the approach can be used as a suitable decision support system to simulate the impact of observed Cercospora leaf spot damage on accumulated above-ground biomass and storage root yield on a plot/site-specific scale.

scholarly journals Safely Application of some Fungicides to Control Cercospora Leaf Spot Disease of Sugar Beet

2017 ◽  
Vol 45 (2) ◽  
pp. 219-230
Author(s):  
Abdel-Nasser El-Sayed ◽  
Amal El-Shehawy ◽  
El-Said El-Shabrawy ◽  
Asmaa Alkolaly
Keyword(s):  
Sugar Beet ◽  
Leaf Spot ◽  
Leaf Spot Disease ◽  
Cercospora Leaf Spot ◽  
Spot Disease
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