title: Fungicide Sensitivity among Isolates ofColletotrichum truncatumandFusarium incarnatum-equisetiSpecies Complex Infecting Bell Pepper in Trinidad.
abstract: Bell pepper is an economically important crop worldwide; however, production is restricted by a number of fungal diseases that cause significant yield loss. Chemical control is the most common approach adopted by growers to manage a number of these diseases. Monitoring for the development to resistance to fungicides in pathogenic fungal populations is central to devising integrated pest management strategies. Two fungal species,Fusarium incarnatum-equisetispecies complex (FIESC) andColletotrichum truncatumare important pathogens of bell pepper in Trinidad. This study was carried out to determine the sensitivity of 71 isolates belonging to these two fungal species to fungicides with different modes of action based onin vitrobioassays. There was no significant difference in log effective concentration required to achieve 50% colony growth inhibition (LogEC50) values when field location and fungicide were considered for each species separately based on ANOVA analyses. However, the LogEC50value for the Aranguez-Antracol location-fungicide combination was almost twice the value for the Maloney/Macoya-Antracol location-fungicide combination regardless of fungal species. LogEC50values for Benomyl fungicide was also higher forC. truncatumisolates than for FIESC isolates and for any other fungicide. Cropping practices in these locations may explain the fungicide sensitivity data obtained.
authors.affiliation: Department of Life Sciences, Faculty of Science and Technology, The University of the West Indies, St. Augustine, Trinidad and Tobago.
authors.forename: Hema
authors.initials: H
authors.lastname: Ramdial
authors.affiliation: Department of Life Sciences, Faculty of Science and Technology, The University of the West Indies, St. Augustine, Trinidad and Tobago.
authors.forename: Kathryn
authors.initials: K
authors.lastname: De Abreu
authors.affiliation: Department of Life Sciences, Faculty of Science and Technology, The University of the West Indies, St. Augustine, Trinidad and Tobago.
authors.forename: Sephra N
authors.initials: SN
authors.lastname: Rampersad
keywords: Fusarium; anthracnose; integrated pest management; sweet pepper