Siti Khairunniza-Bejo and Yusnida Yusoff and Nik Salwani Nik Yusoff and Idris Abu Seman and Mohamad Izzuddin Anuar
Identification of Healthy and BSRInfected Oil Palm Trees Using Color Indices
876 - 879
2015
9
8
International Journal of Agricultural and Biosystems Engineering
https://publications.waset.org/pdf/10001908
https://publications.waset.org/vol/104
World Academy of Science, Engineering and Technology
Most of the oil palm plantations have been threatened
by Basal Stem Rot (BSR) disease which causes serious economic
impact. This study was conducted to identify the healthy and BSRinfected
oil palm tree using thirteen color indices. Multispectral and
thermal camera was used to capture 216 images of the leaves taken
from frond number 1, 9 and 17. Indices of normalized difference
vegetation index (NDVI), red (R), green (G), blue (B), near infrared
(NIR), green – blue (GB), greenblue (GB), green – red (GR),
greenred (GR), hue (H), saturation (S), intensity (I) and thermal
index (T) were used. From this study, it can be concluded that G
index taken from frond number 9 is the best index to differentiate
between the healthy and BSRinfected oil palm trees. It not only gave
high value of correlation coefficient (R0.962), but also high value
of separation between healthy and BSRinfected oil palm tree.
Furthermore, power and S model developed using G index gave the
highest R2 value which is 0.985.
Open Science Index 104, 2015