SULIMAN, A.; JEPREEL, H. T.; A. WARRAG, M. O.; IDRIS, T. I. M. Responses of Periwinkle (Catharanthus roseus) to soil and foliar applications of Haza (Haplophyllum tuberculatum). GPH-International Journal of Agriculture and Research, v. 2, n. 05, p. 01-13, 15 jul. 2019.