Coapplication of Chicken Litter Biochar and Urea Only to Improve Nutrients Use Efficiency and Yield of Oryza sativa L. Cultivation on a Tropical Acid Soil

Table 13

Effects of nitrogen application on crop recovery and agronomic efficiency under field trial.

Treatment	Total N applied	Plants N uptake	Yield	Crop recovery efficiency of applied N (REN)	Agronomic efficiency of applied N (AEN )
	g/0.04 m^2
T1	0	0.02	1.05	—	—
T2	327.5	0.12	1.68	0.00031	0.0020
T4	327.5	0.32	2.72	0.00092	0.0051
T5	245.63	0.28	3.02	0.00106	0.0081
T6	163.75	0.17	2.09	0.00092	0.0064
T7	81.88	0.07	2.07	0.00061	0.0126
T8	0	0.03	1.37	—	—