Botanical evaluation of some stevia (Stevia rebaudiana, Bertoni) varieties under different nitrogen fertilizer levels
By: Tantawi, Abu Bakr Abd al-Wahhab; Atiyyah, Ahmad al-Sayyid; Qinawi, Nariman Nayif. Annals of Agricultural Science, Moshtohor. Vol. 56, no. 2 (2018), pp.271-284, 14 p.
Subjects: Agriculture; Egypt; Nitrogen fertilizers; Plant taxonomy; Stellaria