Start of the scab season

In Randwijk, WUR monitors the maturation and release of ascospores from apple and pear scab during the winter months and spring. In recent days, the temperature in Randwijk has risen significantly, accelerating the maturation of the asci on fallen leaves. On Thursday, February 26, it was determined that the ascospores of apple and pear scab in Randwijk are mature and will most likely be released with the first rain shower. Open branch scab in pears was found earlier this year in Randwijk.