Abstract

DIAZ MORALES, Federico; LEON GARCIA DE ALBA, Carlos De; NAVA DIAZ, Cristian  and  MENDOZA CASTILLO, María del Carmen. Induced resistance to Puccinia sorghi and tar spot complex (Phyllachora maydis and others) in maize (Zea mays). Rev. mex. fitopatol [online]. 2019, vol.37, n.1, pp.1-15.  Epub Aug 21, 2020. ISSN 2007-8080.  https://doi.org/10.18781/r.mex.fit.1807-6.

In order to prove the efficiency of products reported to induce disease resistance in crops, in 2016 and 2017, trials were established in the Experimental Station of the Universidad Autónoma del Estado de México, Campus Toluca, with the commercial hybrid maize BG1384W. The products evaluated were Fosetyl-Al, Acibenzolar-S-metil, Bacillus subtilis, Trifloxystrobin + Tebuconazole, Harpin Protein and Clothianidin + Bacillus firmus. Efficiency of disease resistance inducers was studied in the control of common rust (Puccinia sorghi Schw.), and tar spot complex (Phyllachora maydis Maubl. and others), in two methods of application (soil and foliar application), and three dosages (recommended commercially, half of the recommended one, and recommended plus 50%) for each chemical. Agronomic data was recorded in a yield trial and disease severity for each disease. In 2016, severity was not affected by none of the products evaluated but Fosetyl-Al and Acibenzolar-S-metil increased grain yield. In 2017, Serenade decreased tar spot severity while Fosetyl-Al increased grain yield.

Keywords : inducers; resistance; maize; Fosetil-Al; Bacillus subtilis.

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