Since all plant material used for organic farming should have been produced under organic farming conditions, and due to the generally occurring expansion of organic agriculture, the significance of healthy seed in organic farming is increasing. In a joint research project (2004-2006) the currently available as well as some promising methods and substances were tested and evaluated for their use in practice. Results of investigations concerning the control of pathogens affecting field emergence of rye and wheat by different natural products and physi-cal methods are presented. It has been proved that hot water treatment as well as several plant strengthening products (Tillecur®, LEBERMOOSER, Milsana®) and microbial products (Serenade, Cerall) can improve the field emergence and the development of the plants
