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

Table 2

Description of the treatments.

Treatment no.	Treatments	Amount of P added (kg/ha)		Amount of N added (kg/ha)
		From Tithonia	From fertilizer	From Tithonia	From fertilizer
1	Control	0	0	0	0
2	N	0	0	0	69
3	P	0	20.3	0	0
4	NP	0	20.3	0	69
5	70% P (TSP) + 30% P (Tithonia)	6.1	14.2	61	0
6	60% P (TSP) + 40% P (Tithonia)	8.3	12.0	83	0
7	50% P (TSP) + 50% P (Tithonia)	10.2	10.1	102	0
8	40% P (TSP) + 60% P (Tithonia)	12.2	8.1	122	0
9	30% P (TSP) + 70% P (Tithonia)	14.2	6.1	142	0
10	20% P (TSP) + 80% P (Tithonia)	16.3	4.0	163	0
11	10% P (TSP) + 90% P (Tithonia)	18.3	2.0	183	0
12	Tithonia alone (100% P)	20.3	0	203	0

Recommend rate for Jimma and the surrounding areas; percentages indicate amount of P derived from the respective sources.