suliman, ashwag, Jepreel, H. T., Idris, T. I. M., A. Warrag, M. O., & Hussien, F. A. (2018). Response of Periwinkle (Catharanthus roseus) to urea applications. IJRDO-Journal of Agriculture and Research (ISSN: 2455-7668), 4(10), 01-06. https://doi.org/10.53555/ar.v4i10.2454