Nuraddeen Abdullahi Aliyu , Roslan Ismail , Martini Mohammed Yusoff , Mohd Firdaus Mohd Anuar , Adamu Garba K/Naisa. “SOIL NUTRIENT STATUS OF SUDAN SAVANNA INCEPTISOL (NIGERIA) AMENDED WITH JATROPHA (Jatropha Curcas L.) FOLIAGE”. International Journal of Modern Agriculture, vol. 9, no. 4, Dec. 2020, pp. 113 -1, http://www.modern-journals.com/index.php/ijma/article/view/190.