Agriculture Handbook, Issue 643

accuracy Agric alfalfa bermudagrass bias calibration equations calibration samples calibration set cell wall Chem Chemometrics coefficients confidence limits constituents Crop Sci crude protein Dairy Sci determinations developed dry matter digestibility error of calibration evaluation F. E. Barton factors feed filter instrument forage quality Forage Research forage samples grasses infrared reflectance spectroscopy IVDMD J. S. Shenk laboratory lead sulfide legume lignin log 1/R M. O. Westerhaus math treatments Minnesota Minson moisture monochromator Network neutral detergent fiber NIR spectra NIRS analyses NIRS analysis NIRS calibration NIRS data NIRS instruments NIRS method NIRS technology noise number of samples overfitting Pacific Scientific percent plant population Proc procedure protein recalibration reference method reported rumen sample set sclerenchyma selection SEP(C silage Soest species spectrum standard error statistics strument technique tion Type I error unexplained error USDA-ARS validation variability variation vitro vivo voluntary intake wavelengths