| fluctuations in number of cercospora beticola conidia in relationship to environment and disease severity in sugar beet. | cercospora leaf spot, caused by cercospora beticola, is the most damaging foliar disease of sugar beet in minnesota (mn) and north dakota (nd). research was conducted to characterize the temporal progression of aerial concentration of c. beticola conidia in association with the environment and disease severity in sugar beet. in 2003 and 2004, volumetric spore traps were placed within inoculated sugar beet plots to determine daily dispersal of conidia at breckenridge, mn, and st. thomas, nd. plot ... | 2009 | 19522577 |