Estimation of LNC by the sugarcane leaf spectra by the Partial Least Squares Regression - PLSR for the dates 67 DAC, 99 DAC, 144 DAC, 164 DAC, 200 DAC, 228 DAC, 255 DAC, 313 DAC and general. The values of R2, RMSE and d were obtained from the results of the k-fold CV validation.