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

<div>Relationship between relative variation in sensor determined vegetation index (SI<sub>NDVI</sub>) and variation in relative chlorophyll meter (SI<sub>SPAD</sub>) readings for data collected during tillering and booting stages.</div>

The Scientific World Journal

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Figure 5

Figure 5: Calibration and Algorithm Development for Estimation of Nitrogen in Wheat Crop Using Tractor Mounted N-Sensor 