Abstract

SANTIAGO-ELENA, Eduardo; ZAMORA-MACORRA, Erika Janet; ZAMORA-MACORRA, Mireya  and  ELIZALDE-GAYTAN, Karla Giovana. Interaction between Mycodiplosis and Hemileia vastatrix in three scenarios of coffee crop management (Coffea arabica). Rev. mex. fitopatol [online]. 2020, vol.38, n.3, pp.320-336.  Epub Nov 27, 2020. ISSN 2007-8080.  https://doi.org/10.18781/r.mex.fit.2005-2.

Coffee rust (Hemileia vastatrix) is a devastating disease for coffee plantations in Mexico. Control methods have focused on the use of fungicides, with no success, so biological control represents an alternative. Mycodiplosis larvae are reported as predators of H. vastatrix but the information available about this insect is limited. The objectives of this research were to describe the type of relationship between H. vastatrix and Mycodiplosis, and to know their distribution pattern in the plant canopy. Three plots with a high incidence of coffee rust in Xochitlán de Vicente Suárez, Puebla, were sampled and were registered periodically the severity of the rust and the number of larvae of Mycodiplosis per strata of the canopy. 25 plants per plot were selected, sampled in “cinco de oros”. Larvae were molecularly identified. Using the Kruskal Wallis test, differences were detected in the number of sampling sites in the severity of rust and the number of Mycodiplosis larvae, detecting a positive correlation between the severity of rust and the number of Mycodiplosis larvae. The Mycodiplosis distribution was similar in the strata (low, medium and high) of the evaluated plants.

Keywords : Coffee rust; mycophagus; biological control; incidence; severity.