Komentar resmi
Your image seems to only take up the range of 0-.35 or so which will be hard to map to Ag Leader. This is where a bit of ground truth taking will come in. You need to be able to correlate what a .1 in your image looks like compared to the real world. Ag Leader assumes you are using a calibrated NDVI source (as do we).
The color values are available in the color map at the time you uploaded your imagery.