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Title: Survey of pod rot pathogens in Oklahoma

item Bennett, Rebecca
item DAMICONE, JOHN - Oklahoma State University

Submitted to: American Peanut Research and Education Society Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 5/23/2016
Publication Date: 12/1/2016
Citation: Bennett, R.S., Damicone, J.P. 2016. Survey of pod rot pathogens in Oklahoma [abstract]. In: Proceedings of the American Peanut Research and Education Society, July 12-14, 2016, Clearwater, FL. 48:59.

Interpretive Summary:

Technical Abstract: Pod rot is a sporadic and occasionally devastating disease of peanuts, particularly of Virginia market types, in Oklahoma. Previous studies identified Pythium myriotylum and Rhizoctonia solani as the predominant pod-rotting pathogens in Oklahoma, but recent studies in other states have isolated additional species of Pythium from symptomatic pods. A survey to identify the pathogens causing pod rot in Oklahoma was conducted in 2015. A total of 898 pods with symptoms of pod rot, collected from over twelve fields in six Oklahoma counties were plated on both water agar and P5ARP. No Rhizoctonia solani was isolated from the pods. The species of Pythium are currently being identified using ITS sequences and the results will be presented at the meeting. This information will be useful in developing greenhouse-based assays for evaluating pod rot resistance.