Abstract
Abstract Sclerotia of S. minor are easily transferred from location to location by contaminated soil and plant debris lodged in farm equipment and shoes. Sodium hypochlorite was evaluated as a potential treatment to reduce the spread of this pathogen, and it was lethal to bare sclerotia when immersed in solutions of 6% for 5 min or 3% for 10 min. There was no change of sclerotial viability when sterile water was used to rinse the sclerotia immediately after sodium hypochlorite treatment. For sclerotia placed in field soil, 80 min at 3% NaOCl was lethal in a sandy loam but not in a sandy clay loam, whereas 60 min at 6% was lethal in both soils. To reduce the spread of sclerotia from infested farms, it is recommended that infested items removed from these sites be immersed in 6% sodium hypochlorite for at least 60 min. Since this is impractical for field equipment, removing soil and plant debris with water and containment/isolation of effluent are suggested.
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