Agronomy and Horticulture Department

 

Date of this Version

2-2014

Citation

Published by The American Phytopathological Society February 2014, Volume 98, Number 2, Page 279 http://dx.doi.org/10.1094/PDIS-05-13-0487-PDN.

Comments

Open Access.

Abstract

During the summer of 2011, foliar blight was observed on buffalograss (Buchloë dactyloides (Nutt.) Engelm.) lawns in Lincoln and Waverly, Nebraska. Disease symptoms were common when buffalograss was growing above 30°C and in drought conditions. Disease symptoms began as dark brown oblong leaf spots, followed by leaf tip dieback and eventual blighting of entire tillers. Leaf infections would progress into patches of thinning turf. Diseased leaf pieces were rinsed in distilled water and placed on 1.5% water agar. Two mitosporic fungal species having conidial morphology of Curvularia and Bipolaris were isolated. Colonies of Curvularia isolates grown on ¼× PDA at 25°C appeared velvety and dark greenish to grayish black after 1 week while Bipolaris cultures were brownish gray with olive green margins.