The present investigation entitled "Effect of three doses of tetrahormona in growing broccoli, using the hybrid F-1 Royal Favor HyB in the province of Lamas", was aimed to evaluate and analyze bio-stimulant dose tetrahormonal efficient (Biogyz) on broccoli crops production and make economic analysis of the treatments studied. Applying Biogyz were applied at 15, 30 and 45 days after sowing, using statistical design of randomized complete block (RCBD) with four treatments and four blocks. The results indicate that treatment T3 (400 cc.ha-1 Biogyz) obtained the highest average performance 15 296,6 kg ha-1 being statistically equal to T2 (300 cc.ha-1 Biogyz) who earned a average of 13 986,3 kg ha·1 and which in turn exceeded their averages statistically the T1 (200 Biogyz cc.ha-1 ) and TO (Witness) who obtained averages 12 and 7 865,5 102.8 kg ha·1 yield respectively. Performance results o...