scholarly journals Regressive Analysis on Leaf Nitrogen Content and Near Infrared Reflectance and Its Application for Agricultural Farm Monitoring with Helicopter Mounted Near Infrared Camera

2013 ◽  
Vol 2 (3) ◽  
Author(s):  
Kohei Arai ◽  
Sadayuki Akaisi ◽  
Hideo Miyazaki ◽  
Yasuyuki Watabe
Keyword(s):  
Nitrogen Content ◽  
Near Infrared ◽  
Infrared Camera ◽  
Leaf Nitrogen ◽  
Leaf Nitrogen Content ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance ◽  
Agricultural Farm ◽  
Regressive Analysis

Effectiveness of Near Infrared Reflectance Spectroscopy in the Quick Evaluation of Nitrogen Content in Sewage Sludge

2009 ◽  
Vol 40 (1-6) ◽  
pp. 726-735 ◽  
Author(s):  
Luis Galvez‐Sola ◽  
Raul Moral ◽  
Joaquin Moreno‐Caselles ◽  
Maria Dolores Perez‐Murcia ◽  
Aurelia Perez‐Espinosa ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Nitrogen Content ◽  
Near Infrared ◽  
Reflectance Spectroscopy ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance Spectroscopy ◽  
Near Infrared Reflectance ◽  
Infrared Reflectance Spectroscopy

PREDICTING NITROGEN AND DIGESTIBILITY OF FORAGES USING NEAR INFRARED REFLECTANCE PHOTOMETRY

1981 ◽  
Vol 61 (1) ◽  
pp. 45-51 ◽  
Author(s):  
J. E. WINCH ◽  
HELEN MAJOR
Keyword(s):  
Nitrogen Content ◽  
Near Infrared ◽  
Correlation Coefficients ◽  
Quality Parameters ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance ◽  
Dry Matter Digestibility ◽  
Percent Nitrogen

A Technicon Infra Alyzer 2.5, near infrared reflectance analyzer equipped with the six filters (1.68, 1.94, 2.10, 2.15, 2.23, 2.31 μm) which are used for the estimation of percent nitrogen, oil and moisture of grain crops was evaluated for the analyses of percent total nitrogen, in vitro and in vivo dry matter digestibility in grasses, legumes and grass-legume mixtures. Of the three quality parameters, only percent nitrogen was estimated with an acceptable degree of accuracy. The analyzer, therefore, has a potential for rapid nitrogen analysis of grasses, legumes and grass-legume mixtures. Correlation coefficients of 0.90 and above were obtained between infrared and Kjeldahl nitrogen when the nitrogen content of grasses or legume test samples was derived on either a grass or a legume calibration. A slight decrease in the standard error of prediction occurred when grass and legume calibrations were used to estimate nitrogen content of grass and legume samples, respectively. To insure accuracy, samples used to develop calibrations as well as those to be analyzed should be finely ground. In addition, the moisture content of the samples must be kept within the moisture range of the calibration.

scholarly journals Detection of leaf nitrogen content of summer corn using visible/near infrared spectra

2012 ◽  
Vol 30 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Wei LIU ◽  
Qing-Rui CHANG ◽  
Man GUO ◽  
Dong-Xing XING ◽  
Yong-Sheng YUAN
Keyword(s):  
Nitrogen Content ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Leaf Nitrogen ◽  
Leaf Nitrogen Content ◽  
Near Infrared Spectra
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