Treatments	Apparent nitrification rate %
Treatments	2	4	18	35	50	65	80	100
N (CK)	27.3a	54.6a	91.8a	96.6a	97.9a	99.2a	99.2a	99.1a
N + En	21.9a	41.8b	60.5b	88.4b	93.9a	97.7a	98.8a	99.1a
N + DMPP	9.8b	22.5c	28.8c	70.8c	79.7b	96.9a	98.5a	99.3a
N + DCD	11.7b	18.9c	36.3d	59.7d	73.5b	93.2b	98.4a	99.5a