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Effects of Field Application of Tebuconazole on Yield, Yield Components and the Mycotoxin Content of Fusarium‐infected Wheat Grain
Author(s) -
Homdork S.,
Fehrmann H.,
Beck R.
Publication year - 2000
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1046/j.1439-0434.2000.00460.x
Subject(s) - tebuconazole , fusarium , fungicide , biology , fusarium culmorum , inoculation , agronomy , horticulture , iprodione , mycotoxin , cultivar , botany
Winter wheat cultivar Basalt was artificially inoculated with Fusarium culmorum at the end of anthesis and treated with the systemic fungicide tebuconazole (Folicur ® ) a few days before and/or after inoculation. Check plots remained uninoculated and unsprayed. Head infections, yield, yield components and the percentage of Fusarium ‐ infected kernels were determined. Artificial Fusarium inoculation lowered yield significantly by 24.2‐45.0%. Any fungicide treatment saved yield, thousand grain weight and kernel numbers per head. Pre‐infectional application of tebuconazole was superior to application carried out post‐infection. Moreover, the fungicide controlled deoxynivalenol (DON) synthesis in the field to a considerable extent, and enabled good control of Fusarium head blight, glume blotch and the percentage of Fusarium ‐infected kernels. The levels of Fusarium kernel infection after harvest clearly reflected the DON content of w heat grain.