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

Table 7

Correlation coefficient between grain yield and NDVI score at different growth stages.

Development stages	2008-2009; (𝑛=14)	2009-2010; (𝑛=14)	Pooled; (𝑛=28)
Tillering	0.928**	0.925**	0.936**
Stem elongation	0.880**	0.694*	0.796**
Booting	0.950**	0.707**	0.901**
Anthesis	0.866**	0.879**	0.909**
Grain filing	0.805**	0.881**	0.901**
Maturity	0.927**	0.950**	0.959**

∗Significant at 5% level. ∗∗Significant at 1% level.