Abstract
The take-all disease of cereal roots is found worldwide, but its threat to the yield of winterwheat and therefore the importance for wheatgrowing is regarded quite differently in different countries (Hornby 1998). For this reason the importance of take-all and its epidemiological parameters have to be evaluated in nationwide, longterm surveys. This study, based on results from a take-all survey carried out from 1997-1999 in Germany, shows the influence of region, crop rotation and sowing date on disease incidence and severity. The mapping of the diseaseassessments shows, despite of differences in regional distribution from one year to another, that elevated diseaselevels can not be assigned to certain regions. It is shown how the results for crop rotation and sowing date can be used at sowing time for forecasting take-all risk at yield development. This risk assessment is needed to support the decision for a take-all seed treatment. Further investigations show the difficulty in relating yield losses to different levels of disease. The influence of plant development, especially the root system, on epidemiology and yield is discussed.
| Translated title of the contribution | Results and consequences fromt the take-all survey in Germany |
|---|---|
| Original language | German |
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Gesunde Pflanzen |
| Volume | 53 |
| Issue number | 1 |
| State | Published - 2001 |
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