Practical Use of the Sclerotinia Model
The White Leg Infection Model shows the periods when the formation of apothecia are expected. If these periods are coinsitent with the flowering period of rape seed or canola we have to expect S. sclerotiorum infections during a moist period. The spores formed in the apothecia might be available for one to several days. The opportunity of infections is indicated by the calculation of the infection progress for direct or indirect infections by appressoria or encymatic cell wall degratation. If the infection progress line reaches 100% an infection has to be assumed. These infections should be covered preventative or a fungicid with a curative action against S. sclerotiorum has to be used.