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- Title
Baseline Sensitivity of Fusarium Species Associated with Fusarium Diseases to Metconazole, Triticonazole, and Thiabendazole Fungicides.
- Authors
Burlakoti, Pragyan; Rivera, Viviana V.; Burlakoti, Rishi R.; Nelson, Randy; Adhikari, Tika B.; Secor, Gary A.; Khan, Mohamed F. R.
- Abstract
Baseline sensitivity was determined using in vitro radial growth assay for Fusarium oxysporum, Fusarium graminearum, and a novel uncharacterized Fusarium sp. nov. from sugarbeet, and F. sambucinum from potato, to metconazole, triticonazole, and thiabendazole. All the isolates from sugarbeet and a thiabendazole-sensitive F. sambucinum isolate were sensitive to the tested fungicides. A thiabendazole-resistant isolate of F. sambucinum was resistant to thiabendazole but sensitive to the other two fungicides. The EC50 values of F. oxysporum, F. graminearum, and F. sp. nov. for triticonazole were 0.51 μg ml-1, 2.15 μg ml-1, and 0.04 μg ml-1, respectively. The EC50 values of F. oxysporum, F. graminearum, and F. sp. nov. for metconazole were 0.04 μg ml-1, 0.03 μg ml-1, and 0.02 μg ml-1, respectively. The EC50 values of F. oxysporum, F. graminearum, and F. sp. nov. for thiabendazole were 0.57 μg ml-1, 0.54 μg ml-1, and 0.64 μg ml-1, respectively. Generally, a higher concentration of triticonazole and thiabendazole compared to metconazole were required to reduce colony growth by 50%. The low EC50 values of metconazole, triticonazole, and thiabendazole for the Fusarium species tested suggest that they are potential candidates for control of Fusarium diseases of sugarbeet. Research is needed to determine the effectiveness of these fungicides for control of Fusarium diseases under field conditions.
- Subjects
UNITED States; FUSARIUM; FUNGICIDES; PLANT diseases; SUGAR beets; BEETS; POTATOES; BENZIMIDAZOLES; TRIAZOLES; FUNGAL diseases of plants
- Publication
Journal of Sugar Beet Research, 2010, Vol 47, Issue 1/2, p23
- ISSN
0899-1502
- Publication type
Article
- DOI
10.5274/jsbr.47.1.23