A simulation program for infections by Sooty Blotch was developed based on
literature data and expert judgements. The value of the model as tool for timing
fungicide sprays to control Sooty Blotch was tested in 2003 in two randomized plot
trials, and four “on farm” trials where the treatments where made by the growers.
Disease pressure was relative low due to the warm and dry summer of 2003. Two to
five post infection treatments with lime sulfur or coconut soap aimed at severe
infection periods as indicated by the model provides 72 to 100 % control
