Al-Yasiri, K. A. ., Khudair , T. Y. ., & Abdul Albbas, F. A. . (2019). The Effect of Vitamin B3 and Humic Acid on Flowering Traits and Roots Growth of Geranium Pelargonium hortorum L. Basrah Journal of Agricultural Sciences, 32, 126–133. https://doi.org/10.37077/25200860.2019.262