Abstract

FELIX-GASTELUM, Rubén; HERRERA-RODRIGUEZ, Gabriel; AVILA-ALISTAC, Norma  and  LEON, Elizabeth. Sclerotinia sclerotiorum on bean and potato in Sinaloa: Etiology, epidemiology and alternatives for management. Rev. mex. fitopatol [online]. 2024, vol.42, n.3, RMEXFIT24046.  Epub May 27, 2025. ISSN 2007-8080.  https://doi.org/10.18781/r.mex.fit.2404-6.

White mold (Sclerotinia sclerotiorum) is the main disease of bean and potato in Sinaloa. In the present review, the symptoms and signs of the disease as well as cultural and morphological characteristics of the teleomorph of the pathogen, its ecology and the epidemiology of the disease are addressed. The implementation of a prediction system which includes the carpogenic germination of the sclerotia and the phenology of both bean and potato for the management of the disease is described. This system considers soil temperature ranging from 13 to 19 °C a at depth of 2.5 cm in the soil and the flowering stage in both bean and potato to do the first spray application of synthetic fungicide to prevent the disease. In vitro studies indicated that Trichoderma harzianum, T. viride and T. atroviride reduced mycelial growth rate of S. sclerotiorum. The same antagonistic species exerted control of white mold under field conditions, where an increment of 40% of yield was observed in the treated plots, with respect to those treated with fungicide fluazinam. Future lines of research focusing on the ecology of the pathogen and management of the disease including the antagonistic fungi in the prediction system are suggested.

Keywords : Phaselus vulgaris; Solanum tuberosum; apothecia; Trichoderma..

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