Normalized Difference Vegetation Index as a Tool for Wheat Yield Estimation: A Case Study from Faisalabad, Pakistan

Table 5

Interactive effect of nitrogen levels in wheat cultivars for NDVI score at maturity stage for the year 2008-09.

Wheat cultivars	Nitrogen levels				Means
	N1  (0 kg ha^−1)	N2  (55 kg ha^−1)	N3   (110 kg ha^−1)	N4   (220 kg ha^−1)
V1 = Faisalabad-2008	0.56^a	0.59^a	0.68^a	0.74^a	0.65^A
V2 = Lasani-2008	0.56^a	0.48^ab	0.67^a	0.71^a	0.61^AB
V3 = Miraj-2008	0.51^ab	0.57^ab	0.58^ab	0.68^a	0.58^BC
V4 = Sahar-2006	0.53^ab	0.49^ab	0.65^ab	0.67^a	0.59^AB
V5 = Shafaq-2006	0.55^a	0.48^ab	0.50^b	0.63^ab	0.54^B–D
V6 = GA-2002	0.37^bc	0.43^b	0.53^b	0.64^ab	0.49^D
V7 = Bakkhar-2001	0.26^c	0.58^a	0.67^a	0.55^b	0.51^CD
V8 = Inqlab-91	0.57^a	0.58^a	0.59^ab	0.49^c	0.56^B–D
V9 = Chakwal-50	0.41^b	0.49^ab	0.67^a	0.71^a	0.57^BC
V10 = Chakwal-97	0.58^a	0.53^ab	0.33^c	0.70^a	0.53^B–D
Means	0.49 ^C	0.52 ^C	0.59 ^B	0.65 ^A

Means sharing different letters differ significantly at 𝑃≤0.05.