Efficacy of Disinfectants against <i>Fusarium oxysporum</i> f. sp. <i>cubense</i> Tropical Race 4 Isolated from La Guajira, Colombia

Abstract

Banana, the main export fruit for Colombia, is threatened by Fusarium wilt (FWB), caused by Fusarium oxysporum f. sp. cubense (Foc), tropical race 4 (TR4). Pathogen containment through disinfecting tools, machinery, shoes, and any means that may carry contaminated soil particles with proper disinfectants is at the forefront of disease management. In this study, the biocide efficacy of 10 commercial quaternary ammonium compounds (QACs) products and one based on glutaraldehyde (GA) were evaluated on both reproductive structures (microconidia and macroconidia) and survival spores (chlamydospores) of Foc TR4 (strain 140038) isolated from La Guajira, Colombia. QACs were evaluated at 1200 ppm and two exposure times: Foc TR4 chlamydospores, respectively, after Foc TR4 propagules after 15 min for all concentrations tested.

Keywords

• <i>Fusarium</i> TR4
• <i>Foc</i> TR4 strain 140038 isolated from La Guajira
• Colombia
• wilt
• banana
• disinfection