The effect of a biostimulant (Stimulate) + anti stressors (Biomas) and the increasing dose of the biostimulant (Avibiol) on the root development of Ananas comosus L. variety Red Trujillana in pot conditions was evaluated between September 2017 and January 2018 four types of different soils in Poroto in a completely randomized design with a 5 x 4 factorial arrangement where the factors under study are the biostimulant dose factor with 5 levels and the soil factor with 4 levels. Each experimental unit consisted of a treated crown sucker, with the products under study planted in a pot with 2.5 kilograms of Poroto district soil and the soils belonged to the following villages of Poroto:_x000D_ Mochalito, Guayabito, Santo Dominguito, Poroto. and the levels of the soil factor were: control without any application of (T0), Stimulate(1.25 ml/l) + Biomass (2.0ml/l) (T1) ,Avibiol (2.5ml/l) (T2), A...