This study aimed to improve vegetative growth, yield and fruit quality of strawberry (Fragaria × ananassa Duch. cv. Camarosa) using different concentrations of zinc sulfate (ZnSO4) and pacloboyrazol (PBZ). Zinc (Zn) is a necessary element for plants. The growth inhibitor PBZ is a triazole and protects plants against several environmental stresses. Plants were treated with four levels of ZnSO4 (0, 50, 100 and 150 mg LÃ?â?¹Ã?â?°¹) and four levels of PBZ (0, 30, 60 and 90 mg LÃ?â?¹Ã?â?°¹). Signification difference was seen among the four levels of ZnSO4 and four levels of PBZ on the growth, yield and quality of strawberry. The results showed that the foliar application of ZnSO4 prior to flowering stage was recommended to increase fruit quality and yield of strawberry. The highest total soluble solid (T.S.S.) (8.30%) was obtained from interaction of 30 mg LÃ?â?¹Ã?â?°¹ PBZ and 150 mg LÃ?â?¹Ã?â?°¹ ZnSO4. Leaf area can be maximized (42.20 cm) by the application of 90 mg LÃ?â?¹Ã?â?°¹ PBZ and 100 mg LÃ?â?¹Ã?â?°¹ ZnSO4. The 60 mg L-1 PBZ produced the maximum leaf number (22.1). Also, 100 mg L-1 ZnSO4 proved longest for length of petiole (8.80 cm). The treatment of 90 mg LÃ?â?¹Ã?â?°¹ PBZ along with 150 mg LÃ?â?¹Ã?â?°¹ ZnSO4 had the greatest effect on the fruit set (87.10%). Maximum yield per plant (87.80 g), the number of fruit per plant (10.10) and the number of flower per plant (12.00) were obtained by treatment of 90 mg L-1 PBZ without ZnSO4. Maximum and minimum fruit weight (9.50 and 8.20 g) was observed in treatments of 90 mg LÃ?â?¹Ã?â?°¹ PBZ along with 150 mg LÃ?â?¹Ã?â?°¹ ZnSO4 and control, respectively. All yield and fruit quality traits in plants treated with different concentrations of PBZ and ZnSO4 had higher value than those of the control plants.
