The study was carried out in 2004 - 2006 in the experimental fi eld of the Agriculture University- Plovdiv after the block method in four replications with size of the yield plots 20 m2 - variety Lifl ora. The preparation was tested in the different rates and phases. The biostimulator FLORAMIL introduced in phase beginning of fl owering in rate 0.1 L ha-1 increased the yield of fl ax seeds with 8.61 %. The increase of the yield was in result of the formation of a larger
number of capsules and seeds and the higher weight of the seeds per plant in this variant. In view of the chemical composition the strongest positive effect was observed in variant C1 and C2. The statistic processing of the data was made according to ANOVA, DUNKAN - multiple-range test.
