Incidence, spatial pattern and temporal progress of Fusarium wilt of bananas

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dc.creatorHeck, Daniel Winter
dc.creatorDita Rodriguez, Miguel Angel
dc.creatorPont, Emerson M. del
dc.creatorMizubuti, Eduardo S.G.
dc.date2021-08-08
dc.date2021-08-11T12:18:36Z
dc.date2021-08-11T12:18:36Z
dc.date.accessioned2026-06-27T13:33:17Z
dc.descriptionThe effective management of Fusarium wilt of bananas (FWB) depends on the knowledge of the disease dynamics in time and space. The objectives of this work were: to estimate disease intensity and impact, and to investigate the spatial and temporal dynamics of FWB. Fields planted with Silk (n = 10), Pome (n = 17), or Cavendish (n = 3) banana subgroups were surveyed in Brazil, totaling 95 ha. In each field, all plants were visually assessed, and diseased plants were georeferenced. The incidence of FWB and the impact of the disease on the yield on a regional scale were estimated. Spatial patterns were analyzed using quadrat- and distance-based methods. FWB incidence ranged from 0.09% to 41.42%, being higher in Silk fields (median = 14.26%). Impacts of epidemics on yield ranged from 18.4 to 8192.5 kg ha−1 year−1, with an average of 1856.7 kg ha−1 year−1. The higher economic impact of the disease was observed on Silk cultivar with an average loss of USD 1974.2 ha−1 year−1. Overall, estimated losses increased on average by USD 109.8 ha−1 year−1 at each 1% of incidence. Aggregation of FWB was detected by all analytical methods in 13 fields (1 of Cavendish, 11 of Pome, and 1 of Silk). In the other 17 fields, at least one analytical method did not reject the null hypothesis of randomness. One field (5 ha), composed of six plots, was selected for spatial and temporal studies during two years with bi-monthly assessments. A sigmoidal curve represented the FWB progress and the Gompertz model best-fitted disease progress. The level of aggregation varied over time, and evidence of secondary infection to neighboring and distant plants was detected. FWB is a widespread problem in Brazil and yield losses can be of high magnitude. Epidemiology-based management strategies can now be better established.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/114624
dc.identifier.urihttp://hdl.handle.net/123456789/63046
dc.languageen
dc.publisherMDPI
dc.rightsOpen Access
dc.sourceHeck, D.W.; Dita, M.; Del Pont, E.M.; Mizubuti, E.S.G. (2021) Incidence, spatial pattern and temporal progress of Fusarium wilt of bananas. Journal of Fungi 7(8): 646. 19 p. ISSN: 2309-608X
dc.subjectfusarium oxysporum
dc.subjectspatial analysis
dc.subjectpanama disease
dc.subjectepidemiology
dc.subjectmorbidity
dc.subjectlosses
dc.subjectyields
dc.subjectanálisis espacial
dc.subjectenfermedad de panamá
dc.subjectepidemiología
dc.titleIncidence, spatial pattern and temporal progress of Fusarium wilt of bananas
dc.typeJournal Article

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