PJB-2023-47
FULVIC ACID IN FOLIAR SPRAY IMPROVES THE GROWTH AND NUTRIENTS OF SWEET POTATO
Jingjing Wang
Abstract
Fulvic acid (FA) can stimulate the growth of different animals and plants. Thus, this study aimed to investigate the effects of fulvic acid in foliar spray on the growth of sweet potato (Ipomoea batatas L.). Sweet potatoes grown for 30 days were sprayed with 100 mL of different concentrations of FA solutions per plant, including 0.05% (F0.05), 0.1% (F0.1) and 0.15% (F0.15), and tap water (control). Spray treatment with FA increased the vine length, vine girth, leaf area plant, leaf nutrients, tuber per plant, tuber ash, polyphenols, carotene and ascorbic acid contents of sweet potatoes. Results indicate that spray treatment with FA may be a practical method for improving the yield of sweet potato.
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