Influence of NPK and Gliricidia-based organic fertilizers on soil fertility and performance of millet in Sokoto, Nigeria
Millet (Pennisetum glaucum) is a staple crop in semi-arid Nigeria, but its productivity is constrained by poor soil fertility. While inorganic NPK fertilizers can boost yields, their long-term use may degrade soil health. Organic alternatives like Gliricidia sepium remain underutilized despite their potential to improv...