S. Abdulhameed Yaseen and S. R. AL-Zubaydi, “EFFECTS OF FOLIAR APPLICATION OF (NH4)2SO4 AND ALGA21ST ON VEGETATIVE GROWTH AND CHLOROPHYLL CONTENT OF TWOCULTIVARS SWEET CHERRY (PrunusaviumL.) TRANSPLANTS”, JDU, vol. 22, no. 1, pp. 78-88, Aug. 2019.