Archived
This content is available here strictly for research, reference, and/or recordkeeping and as such it may not be fully accessible. If you work or study at University of Kentucky and would like to request an accessible version, please use the SensusAccess Document Converter.
Publication Date
1981
Description
Objectives of this paper are to review the status of near-infrared reflectance spectroscopy (NIRS) in forage-quality evaluation and to indicate the approach being used in a national research effort to further test, validate, and develop the technology for use in forage breeding, production, and utilization programs. Use of NIRS assay of forage quality was first reported 5 years ago. Research has now been initiated at many locations.
A national research project, involving personnel at six widely dispersed locations in the U.S., was established in 1978. Computerized, high-precision near-infrared reflectance spectrophotometers are employed. A set of 30 forage samples provided experimental materials to ascertain magnitudes of errors involved in chemical, in-vitro digestibility, and NIRS analyses at the six laboratories. The six instruments showed different average spectral curves, but normalization of the data resulted in curves essentially alike except for the bands affected by water, an effect caused by differences in moisture content of the samples at the different sites. Our studies indicate that the magnitude of the errors associated with NIRS analysis compares favorably with those found in routine chemical and in-vitro procedures. Examples of research findings involving different plant species, harvests, growth environments, and drying procedures are presented. The results show that for maximum accuracy the calibration samples should be representative of the forages for which quality will be predicted by NIRS.
Citation
Templeton, W C. Jr; Shenk, J S.; Norris, K H.; Norris, K H.; Fissel, G W.; Marten, G C.; Elgin, J H. Jr; and Westerhaus, M O., "Forage Analysis with Near-Infrared Reflectance Spectroscopy: Status and Outline of National Research Project" (1981). IGC Proceedings (1977-2023). 15.
(URL: https://uknowledge.uky.edu/igc/1981/section8/15)
Archival?
Archival
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Forage Analysis with Near-Infrared Reflectance Spectroscopy: Status and Outline of National Research Project
Objectives of this paper are to review the status of near-infrared reflectance spectroscopy (NIRS) in forage-quality evaluation and to indicate the approach being used in a national research effort to further test, validate, and develop the technology for use in forage breeding, production, and utilization programs. Use of NIRS assay of forage quality was first reported 5 years ago. Research has now been initiated at many locations.
A national research project, involving personnel at six widely dispersed locations in the U.S., was established in 1978. Computerized, high-precision near-infrared reflectance spectrophotometers are employed. A set of 30 forage samples provided experimental materials to ascertain magnitudes of errors involved in chemical, in-vitro digestibility, and NIRS analyses at the six laboratories. The six instruments showed different average spectral curves, but normalization of the data resulted in curves essentially alike except for the bands affected by water, an effect caused by differences in moisture content of the samples at the different sites. Our studies indicate that the magnitude of the errors associated with NIRS analysis compares favorably with those found in routine chemical and in-vitro procedures. Examples of research findings involving different plant species, harvests, growth environments, and drying procedures are presented. The results show that for maximum accuracy the calibration samples should be representative of the forages for which quality will be predicted by NIRS.
