Loading...
A note on the comparison of three near infrared reflectance spectroscopy calibration strategies for assessing herbage quality of ryegrass
Citations
Altmetric:
Date
2014
Files
Loading...
ijafr_53 p199-204.pdf
Adobe PDF, 162.89 KB
Research Projects
Organizational Units
Journal Issue
Citation
G.A. Burns, P. O’Kiely, D. Grogan and T.J. Gilliland. A note on the comparison of three near infrared reflectance spectroscopy calibration strategies for assessing herbage quality of ryegrass. Irish Journal of Agricultural and Food Research, 2014, 53: 199–204
Abstract
Perennial ryegrass (n = 1,836), Italian ryegrass (n = 137) and hybrid ryegrass (n =
103) herbage was taken from harvested plots from the Irish national variety evaluation
scheme and analysed for in vitro dry matter digestibility, water soluble carbohydrate
concentration, crude protein concentration and buffering capacity. Spectral data were
obtained using near infrared reflectance spectroscopy and three calibration strategies
(global, species-specific or local) were utilised to relate the reference values to the
spectral data. The local strategy generally provided the poorest estimation of herbage
composition, with global and species-specific calibration strategies producing similarly
accurate estimates of each quality trait. The higher accuracy and easier maintenance of
the global strategy make it the recommended calibration method for analysing quality
of ryegrass.