Growth, yield components and chemical constituents of Stevia rebaudiana bert. as affected by humic acid and NPK fertilization rates
By: Muawwad, Ali Abd al-Hamid; al-Muji, Isam al-Din Ahmad Muhammad; Abd al-Qadir, Muhammad Ahmad Ibrahim…[et al.]. Zagazig Journal for Agricultural Researches. Vol. 46, no. 1 (2019), pp.13-26, 14 p.
Subjects: Agriculture; Field experiments; Humic acid; Liquid chromatography; Spectrometers