Sadaqa ع. ع. ع. and Bagash م. م. ي. (2018) “Response of the vegetative growth of tomato plants (Lycopersicon esculuntum Mill) with the foliar spraying with zinc element”, University of Aden Journal of Natural and Applied Sciences, 22(2), pp. 273–284. doi: 10.47372/uajnas.2018.n2.a04.