Single-Kernel near Infrared Analysis of Bulk Wheat Heterogeneity—A Theory of Sampling Reference Study

NIR news ◽  
2008 ◽  
Vol 19 (1) ◽  
pp. 4-7 ◽  
Author(s):  
Erik Tønning ◽  
Lars Nørgaard ◽  
Søren B. Engelsen ◽  
Lene Pedersen ◽  
Kim H. Esbensen
Keyword(s):  
Near Infrared ◽  
Infrared Analysis ◽  
Theory Of Sampling

scholarly journals Proxy Measures and Novel Strategies for Estimating Nitrogen Utilisation Efficiency in Dairy Cattle

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 343
Author(s):  
Anna Lavery ◽  
Conrad Ferris
Keyword(s):  
Near Infrared ◽  
Isotope Analysis ◽  
Strong Relationship ◽  
Nitrogen Isotope ◽  
Invasive Technique ◽  
Infrared Analysis ◽  
Resonance Spectroscopy ◽  
Dietary Nitrogen ◽  
Nitrogen Utilisation ◽  
Utilisation Efficiency

The efficiency with which dairy cows convert dietary nitrogen (N) to milk N is generally low (typically 25%). As a result, much of the N consumed is excreted in manure, from which N can be lost to the environment. Therefore there is increasing pressure to reduce N excretion and improve N use efficiency (NUE) on dairy farms. However, assessing N excretion and NUE on farms is difficult, thus the need to develop proximate measures that can provide accurate estimates of nitrogen utilisation. This review examines a number of these proximate measures. While a strong relationship exists between blood urea N and urinary N excretion, blood sampling is an invasive technique unsuitable for regular herd monitoring. Milk urea N (MUN) can be measured non-invasively, and while strong relationships exist between dietary crude protein and MUN, and MUN and urinary N excretion, the technique has limitations. Direct prediction of NUE using mid-infrared analysis of milk has real potential, while techniques such as near-infrared spectroscopy analysis of faeces and manure have received little attention. Similarly, techniques such as nitrogen isotope analysis, nuclear magnetic resonance spectroscopy of urine, and breath ammonia analysis may all offer potential in the future, but much research is still required.

Fundamental baseline variations in aqueous near-infrared analysis

1999 ◽  
Vol 394 (2-3) ◽  
pp. 135-147 ◽  
Author(s):  
Alexey Heiman ◽  
Stuart Licht
Keyword(s):  
Near Infrared ◽  
Infrared Analysis

Near‐Infrared Analysis of Cotton Leaves as a Guide for Nitrogen Fertilization

1998 ◽  
Vol 90 (1) ◽  
pp. 16-21 ◽  
Author(s):  
Yehoshua Saranga ◽  
Ari Landa ◽  
Yehuda Shekel ◽  
Arie Bosak ◽  
Uzi Kafkafi
Keyword(s):  
Nitrogen Fertilization ◽  
Near Infrared ◽  
Infrared Analysis

Overall uncertainty measurement for near infrared analysis of cryptotanshinone in tanshinone extract

2017 ◽  
Vol 170 ◽  
pp. 39-47 ◽  
Author(s):  
Zhong Xue ◽  
Bing Xu ◽  
Xinyuan Shi ◽  
Chan Yang ◽  
Xianglong Cui ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Analysis ◽  
Uncertainty Measurement

scholarly journals The Use of Near Infrared Analysis for In Situ Studies

1997 ◽  
Vol 80 (12) ◽  
pp. 3263-3270 ◽  
Author(s):  
P. Berzaghi ◽  
G. Cozzi ◽  
I. Andrighetto
Keyword(s):  
Near Infrared ◽  
Infrared Analysis ◽  
In Situ Studies
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