The research goal is to evaluate the rhizobia and mycorrhiza application on Cowpea bean (Vigna unguiculata L) cv. Carita Blanco growth. The experiments were developed at Calixto García municipality, Cuba. It was done from April to June 2020, on brown Sialitic soil without carbonate. This design was a random block with three treatments (control, Rhizobium, Rhizobium + Mycorrhizas). It entailed indicators measurement during ten days and after seeds plantation. The indicators measured were plant length (cm), number of trifoliate leaves, the diameter of the stem base (mm), number of nodules per plant, as well as yield and its components, at the moment of harvest. Statistic helped to analyze data by one-way analysis of variance, followed by Duncan's Multiple Range Test. Hence, the statistic professional program SPSS, version 20 for Windows has been implemented. The Rhizobium and Mycorrhiza co-inoculation showed the best results for growth and yield indicators.

Keywords: Biofertilizers, rhizobia, mycorrhizas, cowpea beans, inoculation, brown sialitic soils