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The research was carried out on the MTai-8 variety of bitter or industrial cassava (Manihot sp.) At the field level cultivated in a locality of the middle Sinú of the Colombian Caribbean, with the objective of determining the response of this variety when subjecting propagules yucca to stimuli with different concentrations of the auxin biostimulant ANA applied in pre-planting. The investigation took six months, where destructive samplings were taken every month and, to this, a study of some of the physiotechnical indices was carried out, such as LAR, LAI, NAR, RGR and CGR, in the same way the performance in dry matter was evaluated of the crop. Before planting at field level, the cuttings were immersed for 15 minutes in auxin biostimulant, a product commercially known as Hormonagro® (ANA 17.2g / L). The concentrations of the biostimulant evaluated on the culture were 0 ppm (control in water), 100 ppm and 200 ppm. After this, a completely randomized block trial was set up. The effect of the treatments became visible from 60 DDS when the differentiation in the increase of the biomass of the organs began, showing clear significant differences between the treatments. Regarding the determination of LAR and LAI, the treatment of 100 ppm of auxin biostimulant is postulated as the treatment with the highest exposure of foliar area to radiation. The NAR, RGR, these indices show clear fluctuations which indicates the normal development of the crop for the three treatments; CGR shows that the 100 ppm treatment is the most effective treatment in terms of agronomic productivity. Everything that concerns crop yield during the six months after sowing shows that T2 or stimulating the cassava cuttings in pre-sowing with a concentration of 100 ppm of auxin biostimulant is the best treatment, since it induced the values to be obtained higher in terms of efficiency and production and accumulation of crop biomass. Finally, the application of auxins at 100 ppm to the cuttings of cassava variety MTai-8 in pre-planting, showed that the plants undergo greater differentiation and a better performance was shown in the development of the crop until 6 months of age. In addition to this, the results of this research suggest that the application of exogenous auxins should be continued at the field level, until more specific results are achieved.