scholarly journals Development and Validation of a New Methodology to Assess the Vineyard Water Status by On-the-Go Near Infrared Spectroscopy

2018 ◽  
Vol 9 ◽  
Author(s):  
Maria P. Diago ◽  
Juan Fernández-Novales ◽  
Salvador Gutiérrez ◽  
Miguel Marañón ◽  
Javier Tardaguila
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Water Status ◽  
Development And Validation

Future opportunities of proximal near infrared spectroscopy approaches to determine the variability of vineyard water status

2017 ◽  
Vol 23 (3) ◽  
pp. 409-414 ◽  
Author(s):  
M.P. Diago ◽  
A. Bellincontro ◽  
M. Scheidweiler ◽  
J. Tardaguila ◽  
S. Tittmann ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Water Status

scholarly journals Grapevine leaf water potential based upon near infrared spectroscopy

2009 ◽  
Vol 66 (3) ◽  
pp. 287-292 ◽  
Author(s):  
Antonio Odair Santos ◽  
Oren Kaye
Keyword(s):  
Infrared Spectroscopy ◽  
Water Potential ◽  
Leaf Water Potential ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Water Status ◽  
Correlation Coefficients ◽  
Pressure Chamber ◽  
Leaf Water ◽  
Intensive Sampling

Leaf water potential is a measure commonly used to describe crop water status and water stress dynamics. The established method for determining leaf water potential using a pressure chamber is cumbersome and subject to operator error as well as time/temperature limitations. These limitations prohibit the intensive sampling required to support proactive water management of commercial crops, including vineyards. Particular for grapevines there is need for faster, more precise and more reliable tools for determining leaf water potential in the field. Portable Near-infrared spectroscopy and multivariate data analysis were applied for the modeling and prediction of leaf water potential in grapevines. For field-grown wine grapes the most significant and intensive leaf absorptions occurs in the region from 1440 to 1950 nm and again beyond 2,200 nm. Multivariate analysis of these spectra, referenced against pressure chamber measurements as a standard, showed correlation coefficients from 0.87 to 0.95 clearly demonstrated that this technology can provide a fast and reasonable assessment of leaf water potential in the field.

Development and validation of hematocrit level measurement in dried blood spots using Near-Infrared spectroscopy

2020 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Daan van de Velde ◽  
Jordy L. van der Graaf ◽  
Mariam Boussaidi ◽  
Ruud Huisman ◽  
Dennis A. Hesselink ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Dried Blood Spots ◽  
Hematocrit Level ◽  
Blood Spots ◽  
Level Measurement ◽  
Development And Validation
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