An experiment was conducted to determine the effect of Asahi SL (0.1%), Tytanit (0.04%) and their mixture (Asahi SL + Tytanit), used three times to spray strawberries, on the number of runner transplants, fruit yield, weight of one berry and extraction content in fruit. Compared with the control, only the combination of Asahi SL and Tytanit significantly increased the number of runner transplants. Asahi SL significantly increased fruit yield but, when applied in combination with Tytanit, it did not increase the effectiveness of spraying. The yield of strawberries treated with Tytanit only was similar to the control. Neither of the chemicals examined in the experiment significantly increased the weight of one berry or extraction content in fruit. Tytanit and Asahi SL displayed an anti-stress effect by increasing the weight of one berry at the first dates of fruit harvest.