Evaluation of Commercial Varieties in the Northern United States - Soybean Sudden Death

Thursday, November 19, 2015
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By: Silvia Cianzio, Peter Lundeen, Ryan Budnik, and Greg Gebhart - Iowa State University


"Soybean sudden death syndrome (SDS) is a fungal disease causing foliar necrosis and early leaf drop. SDS can be a significant factor in soybean yield loss and has been found in fields across Iowa. The fungus is a good saprophyte and can grow well on plant debris in the field. The disease often is worse following corn. Although there is no complete resistance to SDS available in soybean, disease resistance is an important part of SDS disease management.


Weather conditions significantly affect SDS disease expression on soybean. Early planting can increase disease infection and later symptoms. Moisture at the beginning of the season, plus during flowering and seed fill, increases infection and symptom expression. The Northern Research Farm is an ideal location for early maturity SDS trials because of its location, access to irrigation, and on-farm staff to assist with irrigation and plot maintenance. Although this was the first year of USB-funded commercial variety evaluations for SDS in Iowa, our project has had SDS trials at Kanawha since 2007.”


Read the full study from Iowa State Research Farm Progress Reports: Evaluation of Commercial Varieties in the Northern United States – Soybean Sudden Death Syndrome Commercial Variety Test


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