INFLUENCE OF UREA FERTILIZER APPLICATION RATE AND PLANT SPACING ON THE MICRO-MINERAL COMPOSITION OF F1 PENNISETUM PURPUREUM. NJAP [Internet]. 2024 Sep. 10 [cited 2026 Oct. 13];:1685-8. Available from: https://mail.njap.org.ng/index.php/njap/article/view/7272