Calibration and Algorithm Development for Estimation of Nitrogen in Wheat Crop Using Tractor Mounted N-Sensor

Table 3

Pearson correlation coefficients among different sensor attributes and Lab Chl at different growing stages of crop.

Relationship between	Tillering	Booting	Ear emergence	Overall
Sensor value and Lab Chl	0.82	0.81	0.67	0.63
	<0.001	<0.001	<0.001
Sensor biomass and Lab Chl	0.79	0.79	0.72	0.65
	<0.001	<0.001	<0.001
Sensor NDVI and Lab Chl	0.75	0.67	0.61	0.58
	<0.001	<0.001	<0.001