Sakamoto, M., Suzuki, T., Naka, Y. (2020). “Effect of Nutrient Solution Concentration on the Growth of Hydroponic Sweetpotato.” Agronomy (MDPI).

Zhang, Y., et al. (2025). “Effects of nitrogen, phosphorus, and potassium fertilizers on storage root yield, nutrient use efficiency, and soil nutrient balance of sweetpotato.” BMC Plant Biology.

Chen, X., et al. (2022). “Potassium deficiency causes more nitrate nitrogen to be stored in leaves for low-K sensitive sweet potato genotypes.” Frontiers in Plant Science.