Table 1. Pattern of nutrient uptake by maize at different phenological stages of crop growth.

Phenological stages	Days after sowing	Nitrogen uptake (kg/ha)	Phosphorus uptake (kg/ha)
VE to V1 (seedling)	0–14	19	2
V2–Vn (Rapid vegetative growth)	15–47	84	12
VT–R1 (Flowering and fertilization)	48–56	75	16
R2–R5 (Grain filling)	57–90	48	11
R6 (Maturity)	91 -95	14	3

Notes.

Source: Johnston and Dowbenko (2004).