Comparison of Three Commercially Available Crop Sensors Utilizing NDVI for Monitoring Cotton Growth and Nitrogen Status

Commercially available sensors, Hydro N Sensor, Greenseeker, and Crop Circle were utilized to obtain the Normalized Difference Vegetation Indice (NDVI). Comparisons between the three instruments will be demonstrated for various physiological stages of cotton and prediction of plant height and leaf nitrogen. Plots utilized were fertilized with 0, 40, 80, and 120 lb N/acre.