“EFFECTS OF NPK 15:15:15 FERTILIER AND SPACING ON THE Physiological Parameters OF OKRO (Abelmoschus Esculentus L.) AT DUTSE, JIGAWA STATE”. FUDMA Journal of Agriculture and Agricultural Technology, vol. 10, no. 4, May 2025, pp. 108-12, https://doi.org/10.33003/jaat.2024.1004.15.393.