Comparing the FieldScout GreenIndex+ Chlorophyll Sensing App to the Minolta SPAD Meter

Thumbnail Image
Date
2011-01-01
Authors
Sawyer, John
Barker, Daniel
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Person
Sawyer, John
Contingent Worker Contingent Worker Contingent Worker Contingent Worker Contingent Worker
Person
Barker, Daniel
Researcher
Research Projects
Organizational Units
Organizational Unit
Journal Issue
Is Version Of
Versions
Series
Department
Agronomy
Abstract

With the improvement of mobile computing, the company Spectrum Technologies, Inc. has developed a precision Ag App which adapts an iPod, iPad, or iPhone camera to select for specific wavelengths of light from a corn leaf (Zea mays L.) in comparison to accompanying board for light/color comparison. The App computes a Dark Green Color Index (DGCI), indicating leaf greenness, which relates to the amount of chlorophyll and thus, indirectly, leaf nitrogen (N) content. The question posed for this study is: How accurate and convenient is the App compared to a proven technology, the Minolta 502 Soil-Plant Analysis Development (SPAD) meter; do they provide the same information?

Comments
Description
Keywords
Citation
DOI
Source
Copyright
Sat Jan 01 00:00:00 UTC 2011