Isolation, Storage, Pathotype Characterization, and Evaluation of Resistance for <i>Phytophthora sojae</i> in Soybean

Fig. 2A. Soil is dried (A, shown here), then ground. Pots are filled and saturated overnight (B), placed in plastic bags and incubated for 2 weeks (C). Seeds are placed on top of the soil, covered with vermiculite and, three days after planting, pots are flooded a second time (B). Seedlings become infected over the following 10 days (D).



Image from Plant Health Progress article:
Isolation, Storage, Pathotype Characterization, and Evaluation of Resistance for Phytophthora sojae in Soybean