Figure 4. Important wavelengths used in the NIRS to predict total N content of cotton leaves.

The important wavelengths used in the NIR model are located in the 2,225 nm and other important wavelength bands are located in region between 2,200 and 2,500 nm. The level of importance represents the top three most important wavelengths used in the 50 iterations of the Cubist model to predict the leaf nutrients. The construction of the graph is explained in “Statistical Analysis”.