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Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis)

Potassium (K) deficiency and Orange Spotting (OS) disease exhibit similar symptom via visual assessment. This work investigates the separability of K deficiency and OS disease symptoms using spectral reflectance. This assessment was conducted at a commercial oil palm plantation located in Sungai Bul...

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Main Authors: Selvaraja, S., Balasundram, Siva Kumar, Vadamalai, G., Mohd Hanif, Ahmad Husni
Format: Article
Language:English
Published: Marsland Press 2013
Online Access:http://psasir.upm.edu.my/id/eprint/29470/1/Use%20of%20spectral%20reflectance%20to%20discriminate%20between%20potassium%20deficiency%20and%20orange%20spotting%20symptoms%20in%20oil%20palm.pdf
http://psasir.upm.edu.my/id/eprint/29470/
http://www.lifesciencesite.com/lsj/life1004/
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spelling my.upm.eprints.294702018-07-20T08:37:07Z http://psasir.upm.edu.my/id/eprint/29470/ Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis) Selvaraja, S. Balasundram, Siva Kumar Vadamalai, G. Mohd Hanif, Ahmad Husni Potassium (K) deficiency and Orange Spotting (OS) disease exhibit similar symptom via visual assessment. This work investigates the separability of K deficiency and OS disease symptoms using spectral reflectance. This assessment was conducted at a commercial oil palm plantation located in Sungai Buloh, Selangor. Leaves from K-deficient trees, OS-infected trees and nonsymptomatic trees (control) were sampled for spectral reflectance acquisition. Leaf spectral reflectance was acquired under constant halogen lighting. All leaf samples exhibited a green peak at 555 nm wavelength, with an average reflectance value of 0.15. Reflectance between OSinfected and K-deficient leaves showed significant separability at the 400-538 nm and 667-688 nm wavelength regions. Reflectance of K-deficient leaves was significantly different than that of OS-infected leaves across all severity classes. Marsland Press 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29470/1/Use%20of%20spectral%20reflectance%20to%20discriminate%20between%20potassium%20deficiency%20and%20orange%20spotting%20symptoms%20in%20oil%20palm.pdf Selvaraja, S. and Balasundram, Siva Kumar and Vadamalai, G. and Mohd Hanif, Ahmad Husni (2013) Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis). Life Science Journal, 10 (4). pp. 947-951. ISSN 1097-8135; ESSN: 2372-613X http://www.lifesciencesite.com/lsj/life1004/ 10.7537/marslsj100413.121
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Potassium (K) deficiency and Orange Spotting (OS) disease exhibit similar symptom via visual assessment. This work investigates the separability of K deficiency and OS disease symptoms using spectral reflectance. This assessment was conducted at a commercial oil palm plantation located in Sungai Buloh, Selangor. Leaves from K-deficient trees, OS-infected trees and nonsymptomatic trees (control) were sampled for spectral reflectance acquisition. Leaf spectral reflectance was acquired under constant halogen lighting. All leaf samples exhibited a green peak at 555 nm wavelength, with an average reflectance value of 0.15. Reflectance between OSinfected and K-deficient leaves showed significant separability at the 400-538 nm and 667-688 nm wavelength regions. Reflectance of K-deficient leaves was significantly different than that of OS-infected leaves across all severity classes.
format Article
author Selvaraja, S.
Balasundram, Siva Kumar
Vadamalai, G.
Mohd Hanif, Ahmad Husni
spellingShingle Selvaraja, S.
Balasundram, Siva Kumar
Vadamalai, G.
Mohd Hanif, Ahmad Husni
Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis)
author_facet Selvaraja, S.
Balasundram, Siva Kumar
Vadamalai, G.
Mohd Hanif, Ahmad Husni
author_sort Selvaraja, S.
title Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis)
title_short Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis)
title_full Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis)
title_fullStr Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis)
title_full_unstemmed Use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (Elaeis guineensis)
title_sort use of spectral reflectance to discriminate between potassium deficiency and orange spotting symptoms in oil palm (elaeis guineensis)
publisher Marsland Press
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/29470/1/Use%20of%20spectral%20reflectance%20to%20discriminate%20between%20potassium%20deficiency%20and%20orange%20spotting%20symptoms%20in%20oil%20palm.pdf
http://psasir.upm.edu.my/id/eprint/29470/
http://www.lifesciencesite.com/lsj/life1004/
_version_ 1643829769922412544
score 13.211869

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