Two complementary techniques allow detection of Fusarium oxysporum f. sp. radicis-lycopersici in soils from two different tomato-cultivated areas of Chile

E. Elizondo-Pasten, A. Boix-Ruiz, M.A. Gómez-Tenorio, C. Ruiz-Olmos, J.I. Marín-Guirao, J.C. Tello-Marquina, F. Camacho-Ferre
Fresh tomato is a highly profitable crop in northern and central Chile. Soil-borne pathogens such as Fusarium oxysporum f. sp. radicis-lycopersici are becoming an increasing threat to the crop. Methyl bromide was widely used as a soil fumigant in these soils, but its use has not been allowed since December 2014. The detection of F. oxysporum f. sp. radicis-lycopersici in infected soils is important in order to develop alternative control strategies to methyl bromide. Two analytical methods have been used to detect the presence of tomato-pathogenic isolates of Fusarium oxysporum: classical dilution plate technique and soil phytopathometry. Both methods were applied to 20 different soil samples, detecting F. oxysporum f. sp. radicis-lycopersici by the dilution technique in 15 of them and by soil phytopathometry in 13 of them. Complementing the two methods, 84% of samples expressed the pathogen. This confirms the presence of the forma specialis in the soils of both cropping areas.
Elizondo-Pasten, E., Boix-Ruiz, A., Gómez-Tenorio, M.A., Ruiz-Olmos, C., Marín-Guirao, J.I., Tello-Marquina, J.C. and Camacho-Ferre, F. (2018). Two complementary techniques allow detection of Fusarium oxysporum f. sp. radicis-lycopersici in soils from two different tomato-cultivated areas of Chile. Acta Hortic. 1207, 315-318
DOI: 10.17660/ActaHortic.2018.1207.44
https://doi.org/10.17660/ActaHortic.2018.1207.44
root crown rot, phytopathometry, dilution plate
English

Acta Horticulturae