The occurrence of clubroot in Colombia and its relationship with climate and agronomic practices
Faculty Advisor
Date
2022
Keywords
clubroot, pathogen spread, Plasmodiophora brassicae, soilborne disease
Abstract (summary)
Clubroot, caused by Plasmodiophora brassicae, is a major disease of cruciferous crops in Colombia. Limited information is available, however, regarding its distribution or epidemiology in this country. The objectives of this study were to determine the occurrence of clubroot in the main regions of Colombia where cruciferous crops are grown, and to examine the relationship between pathogen inoculum density and the likelihood of field infestation with crop management practices and climatic information. In total, 127 fields were surveyed across eight departments, the pathogen inoculum density was estimated, climatic information was obtained, and farmers were surveyed on their crop management practices. More than half (53.7%) of the fields visited were found to be clubroot-infested and pathogen DNA was detected in 91.3% of the surveyed fields. The only department where clubroot symptoms were not observed was Nariño. In infested fields, P. brassicae inoculum density varied between 3 × 102 and 1 × 106 resting spores per gram of soil, with the highest inoculum density observed in Norte de Santander. All other departments had comparable spore loads. Inoculum density positively affected the likelihood of infestation of a field, and both spore loads and infestations were positively affected by the average temperature.
Publication Information
Botero-Ramirez, A., Padilla-Huertas, F. L., Strelkov, S. E., & García-Dominguez, C. (2022). The occurrence of clubroot in Colombia and its relationship with climate and agronomic practices. Horticulturae, 8(8), 711. https://doi.org/10.3390/horticulturae8080711
Notes
Item Type
Article
Language
Rights
Attribution (CC BY)
