In 2011, several large experiments were also commenced evaluating the use of biological control agents to manage Sclerotinia stem rot in soybean. Experiments were established to evaluate the efficacy of Contans WG, a commercial formulation of the mycoparasite Coniothyrium minitans, at 1 lb./ac and 2 lbs./ac under both conventional tillage and no-till environments; to assess fall versus spring application of Contans and application frequency of Contans over a 3-year soybean ? wheat ? soybean rotation; to evaluate the optimal soil conditions (temperature and moisture) and application timing (weeks before planting) for Contans in the spring prior to seeding soybeans; and to evaluate the optimal incorporation method of Contans (watering in the product and/or manually incorporating). All of the experiments except the efficacy evaluation under no-till were established under pivot irrigation so as to facilitate disease development irrespective of rainfall patterns. Sporidesmium sclerotivorum, another biological control agent of S. sclerotiorum that has performed very well in field trials in other regions, was isolated from soils in Carrington, Langdon, and Oakes, and spores are being increased in the laboratory. Field trials with S. sclerotivorum are anticipated to commence in 2013. Pending the development of Sclerotinia stem rot in summer 2012, preliminary results from the Contans experiments are expected in fall 2012.