Table 2.

Nitrogen use efficiencies of wheat plants measured under different N application treatments.

Year	Treatment	ARNUE/%	PFP kg kg−1	ANUE kg kg−1
2018	Urea	25.73c	42.83a	3.60b
	CRU	42.47a	46.34a	7.67a
	30%OF+70%CRU	38.49ab	46.38a	8.09a
	50%OF+50%CRU	34.15b	46.07a	6.85a
	70%OF+30%CRU	33.22b	43.49a	4.27b
2019	Urea	41.97b	46.04a	4.49b
	CRU	51.28ab	47.2a	5.65ab
	30%OF+70%CRU	60.36a	47.96a	6.41ab
	50%OF+50%CRU	66.69a	49.92a	8.03a
	70%OF+30%CRU	57.41ab	47.0a	5.45ab
Source of variation
N source		0.2819*	0.3509*	0.1741*
Year		0.5495*	0.2384*	0.0835*
N source × Year		0.1594*	0.8890ns	0.3227*

ARNUE, apparent recovery nitrogen use efficiency; PFP, partial factor productivity; ANUE, agronomic nitrogen use efficiency.

^*significant at 5%.