Inhibición del crecimiento de Fusarium oxysporum f. sp. nicotianae por dos métodos de envenenamiento in vitro con fungicidas de diferentes grupos toxicológicos

Translated title of the contribution: Growth inhibition of Fusarium oxysporum f. sp. nicotianae by two in vitro poisoning methods with fungicides of different toxicological groups

Wilson Geobel Ceiro-Catasú, Edgar Omar Rueda-Puente, Richard Rondón-Fonseca, Oandis Sosa-Sánchez, Ramón Jaime Holguín-Peña*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Wilt caused by Fusarium oxysporum f. sp. nicotianae is one of the most important fungal diseases in tobacco cultivation, being also one of the most difficult to control. The in vitro effectiveness of two poisoning methods was evaluated; sensi-disc (SD) and medium dilution (DMC) to determine the inhibitory effect of four fungicides of different toxicological groups on F. oxysporum isolated from tobacco in different regions of the province of Granma, Cuba. A differential response was observed in the susceptibility levels of all strains tested, regardless of the method of poisoning. The DMC method was more efficient than the SD, observing increases from 4.37 % (S) to 45.57 % (Ip+Pr) with respect to the SD. The highest inhibition values were observed in DMC with mancozeb (100 %), Tz+Az (79.74 %), and Ip+Pr (96.9 %). The greatest effectiveness in sporulation inhibition was with mancozeb by the SD method (0 %). The in vitro inhibitory effect of the fungicides evaluated (alone or in combination) is indicative of the fungicidal effect on the fungus under study and establishes the importance of inhibition methods for the study of fungicides used in management programs of diseases caused by Fusarium spp., in the tobacco growing areas of Cuba and other parts of the world.

Translated title of the contributionGrowth inhibition of Fusarium oxysporum f. sp. nicotianae by two in vitro poisoning methods with fungicides of different toxicological groups
Original languageSpanish
Article numbere223944
JournalRevista de la Facultad de Agronomia
Volume39
Issue number3
DOIs
StatePublished - 27 Jun 2022

Bibliographical note

Publisher Copyright:
© The Authors, 2022, Published by the Universidad del Zulia.

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