Comparison of Baiting Techniques for Recovering <i>Phytophthora sojae</i> from Soybean Fields in Iowa

Understanding the diversity of a pathogen is important for developing disease management recommendations. In Phytophthora root and stem rot–soybean pathosystem, P. sojae characterized into pathotypes based on ability to cause soybean genotypes that each contain different resistance Rps gene. To understand in an area, isolates may be recovered by baiting soil samples. this research, we compared two commonly used methods sojae: leaf disc method seedling method. More were using (P &lt; 0.01), more detected within population 0.01). Mean complexity populations simple, Gleason, Shannon indices also differed However, percent caused gene did not differ between methods. Thus, either could characterize present area provide data breeders agronomists deployment genes cultivars.