The overall objective of this project was to determine whether a product based on a derivative of pelargonic acid is suitable as a plant protection product for the control of scab in pear. The trial results demonstrate that the preventive action of this product towards scab is similar to the action of copper. In addition, the curative action of this product is comparable to the action of Karma. As such, this product could be used preventively to replace (a number of) copper treatments. However, several applications of this product lead to a stronger russeting/bronzing of the fruit compared to copper applications. Also, several pear varieties show the risk of (limited) phytotox symptoms on the leaves. Because of these two drawbacks, the company has decided to not further develop this product for the control of scab in pear production, which means that the search for alternative methods to copper will have to be continued.