. 2014 Jun 3;9(6):e98445. doi: 10.1371/journal.pone.0098445

Table 1. Fertilization treatments (A); and timing of crop management activities (B).

(A) Treatments	Basal fertilization, applied at wheat sowing (kg·ha⁻¹)			Supplementary N fertilization (kg·ha⁻¹)
	N	P₂O₅	K₂O	Wheat (in April)	Maize (in July)
N0	0	65	0	0	0
N200	50	65	0	50	100
N400	100	65	0	100	200
N600	150	65	0	150	300