Evaluation of a Reduced Cost Active NDVI Sensor for Crop Nutrient Management

Table 5

Simple linear regression between the pocket sensors (PSs) and GreenSeeker in wheat, Ciudad Obregon, Mexico, 2011.

Sensor	Crop	𝑛	Test variable	𝑟^2	Estimate	Pr > ItI	Lower 95%; confidence limit	Upper 95%; confidence limit
20	All wheat data	80	Intercept	0.964	0.020	0.203	−0.011	0.051
20	All wheat data		Slope		0.994	0.774	0.950	1.037
32	All wheat data	60	Intercept	0.955	0.008	0.673	−0.031	0.048
32	All wheat data		Slope		0.998	0.958	0.942	1.055

Pocket sensor: independent variable.
GreenSeeker: dependent variable.
𝑛: sample size.