Potential of spectroscopic data sets for sugarcane thrips (Fulmekiola serrata Kobus) damage detection
Potential of spectroscopic data sets for sugarcane thrips (Fulmekiola serrata Kobus) damage detection
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Date
2008-12-15
Authors
Abdel-Rahman, Elfatih
Journal Title
Journal ISSN
Volume Title
Publisher
uofk
Abstract
Sugarcane thrips was detected in South African sugarcane in 2004. Since then it has
become widespread in South Africa. The South African Sugarcane Research
Institute (SASRI) conducts field surveys to monitor this pest, but this is time
intensive and costly. As a first step towards evaluation of remote sensing for thrips
monitoring, a preliminary experiment and analysis at leaf level were conducted
using a handheld field spectroradiometer covering the 350 to 2500 nm range of the
electromagnetic spectrum to detect sugarcane thrips damage. Reflectance spectra
of sugarcane leaves with different levels of thrips damage, from two popular
varieties (N19 and N12), were measured and statistically analysed using one-way
analysis of variance, sensitivity analysis and canonical discriminant analysis.
The results of the analyses showed that there were significant differences in spectral
reflectance and derived variables used in the study at the different levels of damage.
The red edge region of the visible portion gave the highest significant differences
and levels of separability among the damage classes. It is hypothesized that
this might be associated with chlorophyll and nitrogen deficiencies induced
by thrips.
Description
This paper had been presented for promotion at the university of Khartoum. To get the full text please contact the author
elfatihabdelrahman@gmail.com
Keywords
Potential,spectroscopic,data,sets,sugarcane,thrips,damage,detection