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This model estimates the date of the first occurrence of C. beticola on base of the accumulated daily average temperatures since the first of January over 5°C. It takes threshold of 1006.2°C in periods with relative humidity higher than 60% and if we would have no relative humidity a threshold of 1081.9°C is valid.

This model have been developed for Italy and is used in Italy and Germany.

For the year 2010 in Styria CercoPrim indicates the 19th of June for the first spray. This is approximately the same date the Pessl Instruments Risk model or the DIV model would have indicated to spry susceptible varieties.

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