Spatial dynamics of spotted wilt in georgia grown tobacco and peanutBertrand P, Culbreath A Department of Plant Pathology, The University of Georgia. Correspondence: bertrand@uga.edu The spatial development of spotted wilt has been studied in tobacco and peanut. Tobacco data from trials conducted between 1989每2004 comprising ~2200 individual reps with > 100 plants was subjected to ordinary runs analysis. The results were tabulated by disease incidence classes ranging from <11% 每 >71% at 10% intervals. In the four disease incidence classes ranging from <11% 每 40.9% aggregation occurred in 10每13% of the cases. In the four disease incidence classes from 41% 每 >71% there was a steadyilar conclusion for both peanut and tobacco. Secondary infection is biologically possible in both crops however data from spatial analysis and other trials suggest that the majority of visible disease results from primary infection.
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