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Chemical Control of Neotyphodium spp. Endophytes in Perennial Ryegrass and Tall Fescue Seeds

^a UMR Epidémiologie végétale et écologie des populations, INRA-INA P.G., BP 01, F-78840 Thiverval-Grignon, France
^b FNAMS, Le Verger, F-49800 Brain sur l'Authion, France
^c UMR Epidémiologie végétale et écologie des populations, INRA-INA P.G., BP 01, F-78840 Thiverval-Grignon, France

View larger version (30K): [in a new window]   Fig. 1. Endophyte incidence after seed treatment measured on fifty, 3-mo-old ryegrass plants for each lot in 2002. Germination rate evaluated at 14 d. Different letters indicate significant differences at P = 0.05.

View larger version (25K): [in a new window]   Fig. 2. Endophyte incidence in seeds harvested from two perennial ryegrass lots grown in fields in 2002 at two locations, whose parental seeds were treated by fungicides. Different letters indicate significant differences at P = 0.05. ANOVA were performed on each lot at each location (lowercase letters for Troyes and uppercase letters for Brain).

View larger version (25K): [in a new window]   Fig. 3. Endophyte incidence after seed treatment measured in fifty, 3-mo-old ryegrass plants for each lot in 2003. Germination evaluated at 14 d. Different letters indicate significant differences at P = 0.05.

View larger version (25K): [in a new window]   Fig. 4. Endophyte incidence in seeds harvested from two perennial ryegrass lots grown in fields in 2003 at two locations, whose parental seeds were treated by fungicides. Different letters indicate significant differences at P = 0.05. ANOVA were performed on each lot at each location (lowercase letters for Troyes and uppercase letters for Brain).