Factsheet DSS Cabbage fly flight model Scandinavia
The cabbage fly flight model determines the start of egg laying as 160 degree-days based on the soil temperature (10 cm) or based on the standard air temperature (2 m above the soil surface) at the same location. Egg laying starts at 210 degree days. This model should be used in combination with direct observations of eggs in the field. This due to the large variability and to get an idea of the severity of the attack. The model uses daily soil or air temperature as a parameter. In areas with early crops the preceding season, the flight period can start earlier due to higher so il temperature under the covers.The DSS gives information about the risk of adult cabbage root fly flight activity. It can be seen that at 210 degree days (which is the upper threshold value), the risk of flight activity is high and it is likely that egg laying has begun on vulnerable brassica crops. Action should be taken to protect the crop, taking into consideration the observations in your own field.The DSS is created by NIBIO which is based in Norway
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- 791 kB
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- 14-06-2023
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- English
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- CC BY
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