Foliar fertilizers of soybeans have been widely reported in many field trials. Although Calcium and Boron are essential nutrients for soybean, research results have shown that foliar application of nutrients has been contradictory. The objective of this study was to evaluate the soybean response by applying different foliar fertilizer rates Calcium and Boron on yield components and soybean yield applied at flowering (stadia fenologic R3). Two experiments were carried out during two successive seasons 2009-2010 and 2010-2011, in the Quatro Pontes, Paraná State, Brazil. The area used was managed in no-tillage system consolidated. The experimental was randomized complete blocks design (RCBD), with six replicates. The treatments consisted of applying commercial fertilizer on the basis of Calcium and Boron (10% Ca 2+ and 0.5% of B). Foliar fertilizer containing Ca 2+ and B was applied 30 days after germination, when the plants were at the R3 stage. Also, five rates of commercial product (0, 1.5, 2.5, 3.5 and 4.5 L ha-1) were applied. Analyzing the results, it was concluded that the application of the foliar fertilizer with Calcium and Boron, applied 30 days after germination did not affect yield components and soybean yield during successive seasons 2009