Validation of Fungicide Spray Strategies and Selection for Fenhexamid Resistance in Botrytis cinerea on Greenhouse-Grown Grapevines.
Phytopathology
; : PHYTO11230443R, 2024 Sep 13.
Article
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| MEDLINE
| ID: mdl-38970801
ABSTRACT
In this study, in planta assays were conducted to assess the effects of fungicide spray tactics, such as the reduction of the labeled fungicide dose and mixture with a multisite fungicide, on fungicide resistance selection and disease control using Vitis vinifera 'Cabernet Sauvignon' grown in a greenhouse for 2 years. The entire clusters were inoculated with Botrytis cinerea isolates at varying frequencies of fenhexamid resistance, followed by fungicide sprays and disease and fenhexamid resistance investigations at critical phenological stages. Our findings indicate that the lower dose of the at-risk fungicide, fenhexamid, effectively managed fenhexamid resistance and disease as well as the higher, labeled dose. In addition, a mixture with the multisite fungicide captan generally resulted a net-positive effect on both resistance management and disease control.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phytopathology
Asunto de la revista:
BOTANICA
Año:
2024
Tipo del documento:
Article
Pais de publicación:
Estados Unidos