Factsheet Septoria Humidity Model

Author: L. Langner
Country: All
Posted on: January 16, 2023
Document type: Publications
Leaf blotch diseases of wheat can be caused by septoria tritici blotch (Zymoseptoria tritici) and staganospora nodorum blotch (Parastagonospora nodorum), which are both favoured by wet conditions. Weather data from GS 31 are used in this model. The humidity model estimates risk of septoria tritici blotch infections in winter wheat. Risk of attack is assumed after 20 hours with continuous wetness. A wet hour is defined as minimum 0,2 mm precipitation in an hour or minimum 85% relative humidity.