Leaf Spot of Indiangrass Caused by Colletotrichum caudatum

Publisher Website
Google Scholar
Abstract
A leaf disease caused by Colletrotrichum Caudatum was prevalent on indiangrass (Sorghastrum nutans) in research plots in Centre County, PA [Pennsylvania, USA] during five of the six years 1980-1985. The disease was usually moderate to severe in late August and September. Results of cultural studies of the pathogen are presented. C. caudatum caused severe damage only on indiangrass cultivars in greenhouse inoculation tests. Differences among mean disease ratings were significant at P < 0.01. Six other warm-season grasses, seven cool-season grasses, and three small-grain species were not infected. Corn (Zea mays) was slightly susceptible, and sudangrass (Sorghum sudanense) was highly resistant to C. caudatum. Corn is reported as a new host of C. caudatum. This is the first demonstration of the pathogenicity of C. caudatum on indiangrass.

This publication has 0 references indexed in Scilit: