Agriculturae Conspectus Scientificus, Vol 79, No 4 (2014)

Improvement of Vegetative and Reproductive Growth of ‘Camarosa’ Strawberry: Role of Humic Acid, Zn, and B


Pages: 239-244


This experiment was conducted with the aim to improve vegetative and reproductive growth of strawberry (Fragaria × ananassa Duch. cv. ‘Camarosa’) using humic acid, zinc sulfate (ZnSO4), and boric acid. We evaluated applications of humic acid at 0, 20 and 40 mg·L-1, ZnSO4 at 0, 50 and 100 mg·L-1, and boric acid at 0, 50 and 100 mg·L-1 at 30 days after planting and blooming stage on growth of strawberry cv. ‘Camarosa’. Results indicated that humic acid, ZnSo4, and boric acid application improved reproductive and vegetative characteristics compared to control treatment. The results showed, that plants treated with humic acid, ZnSO4, and boric acid at higher their concentrations exhibited generally higher dry weight of roots and shoots, number of flowers and inflorescences, leaf area, length of roots and shoots, length of flowering period, yield, weight of primary and secondary fruits and number of their achenes. Total yield was significantly increased by all treatments compared to control treatment at both stages of application, especially at blooming stage. Moreover, conclusion showed that the mentioned materials could have impact on vegetative and reproductive growth of strawberry generally. In this study humic acid at 40 mg L-1 at blooming stage resulted in best effects on development of strawberry cv. ‘Camarosa’.


humic acid, zinc sulfate, boric acid, growth

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