Objective: The VIUSID Agro® biostimulant contains amino acids, vitamins, and minerals. It was subjected to a biocatalytic process of molecular activation to improve its biological activity. In Cuba, its benefits have been demonstrated mainly in vegetables, sugar cane, and tobacco.Design/Methodology/Approach: The effect of the product on the morpho-agronomic traits of coffee seedlings was evaluated through experiments carried out in the nursery of the Instituto de Investigaciones Agro-Forestales of Tercer Frente, from December 2019 to July 2020 and from October 2020 to June 2021, using a saran shade cloth. In a completely randomized design, 6 concentrations of VIUSID Agro® (0, 0.2, 0.4, 0.6, 0.8, and 1.0 mL L1 of water) were applied monthly on the second to the fifth pair of leaves. Seedling height, stem diameter, dry mass, leaf area, quality index, and efficiency were evaluated. Data were processed using a simple classification analysis of variance. The means were compared with Duncan’s test. The concentrations and the leaf area were adjusted to several functions and the one with the highest coefficient of determination was selected.Results: Coffee seedlings had a positive response to the biostimulant. The monthly foliar applications of VIUSID Agro® between the second and the fifth pair of leaves increased the morpho agronomic indicators of the seedlings.Findings/Conclusions: VIUSID Agro® in concentrations ranging between 0.64 and 0.71mL L1 of water caused significant increases in the leaf area of the seedlings.
