PRODUCTIVITY OF LIVING STONE POTATO (Plectranthus esculentus L.) AS INFLUENCED BY ROW SPACING AND NUTRIENT SOURCES IN BILLIRI, GOMBE STATE, NIGERIA. FJS. 2023;3(2):39-51. Accessed September 8, 2025. https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1479