Combined Application of Phosphorus Fertilizer with Tithonia Biomass Improves Grain Yield and Agronomic Phosphorus Use Efficiency of Hybrid Maize

Figure 5

Effect of combined TSP and Tithonia biomass application on grain yield, total aboveground biomass, and HI of maize. Note: 1 = control; 2 = N (full dose); 3 = P (full dose); 4 = NP (recommended rate); 5 = 70% P (TSP) + 30% P (Tithonia); 6 = 60% P (TSP) + 40% P (Tithonia); 7 = 50% P (TSP) + 50% P (Tithonia); 8 = 40% P (TSP) + 60% P (Tithonia); 9 = 30% P (TSP) + 70% P (Tithonia); 10 = 20% P (TSP) + 80% P (Tithonia); 11 = 10% P (TSP) + 90% P (Tithonia); 12 = Tithonia alone (100% P).