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Use of selected spectral ratios to assess the response of pineapple to potassium nutrition

Potassium (K) nutrition in pineapple grown on tropical peat can be problematic due to high precipitation which encourages leaching losses. Non-destructive tools that can assess K deficiency and the accompanying changes in biophysical and biochemical properties within pineapple is a good strategy to...

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Main Authors: Balasundram, Siva K., Chong, Yen Mee
Format: Article
Published: UiTM Press 2021
Online Access:http://psasir.upm.edu.my/id/eprint/93502/
https://jsst.uitm.edu.my/index.php/jsst/article/view/11
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spelling my.upm.eprints.935022023-01-13T03:36:59Z http://psasir.upm.edu.my/id/eprint/93502/ Use of selected spectral ratios to assess the response of pineapple to potassium nutrition Balasundram, Siva K. Chong, Yen Mee Potassium (K) nutrition in pineapple grown on tropical peat can be problematic due to high precipitation which encourages leaching losses. Non-destructive tools that can assess K deficiency and the accompanying changes in biophysical and biochemical properties within pineapple is a good strategy to employ. In this study, we assessed the biophysical changes in pineapple (var. MD2) in response to different K rates by using a hyperspectral approach. K deficiency was detected at 171 days after planting. Shortage of K also exhibited a shift in red edge towards shorter wavelengths between 500-700 nm. In addition, spectral ranges of 430-680 nm, as well as 680-752 nm were found to be most effective in differentiating spectral response to varying K rates. Three vegetation indices, i.e. Normalized Pigment Chlorophyll Index (NPCI), Plant Senescence Index (PSRI) and Red-edge Vegetation Index (RVSI) were found to best describe K treatment effects on pineapple canopy reflectance. This study could be extended further to include pineapple varieties other than MD2, and also key nutrients, such as N and P, for better fertilizer management in peat-grown pineapple. UiTM Press 2021-09-26 Article PeerReviewed Balasundram, Siva K. and Chong, Yen Mee (2021) Use of selected spectral ratios to assess the response of pineapple to potassium nutrition. Journal of Smart Science and Technology (UiTM), 1 (1). 16 - 22. ISSN 2785-924X https://jsst.uitm.edu.my/index.php/jsst/article/view/11 10.24191/jsst.v1i1.11
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/
description Potassium (K) nutrition in pineapple grown on tropical peat can be problematic due to high precipitation which encourages leaching losses. Non-destructive tools that can assess K deficiency and the accompanying changes in biophysical and biochemical properties within pineapple is a good strategy to employ. In this study, we assessed the biophysical changes in pineapple (var. MD2) in response to different K rates by using a hyperspectral approach. K deficiency was detected at 171 days after planting. Shortage of K also exhibited a shift in red edge towards shorter wavelengths between 500-700 nm. In addition, spectral ranges of 430-680 nm, as well as 680-752 nm were found to be most effective in differentiating spectral response to varying K rates. Three vegetation indices, i.e. Normalized Pigment Chlorophyll Index (NPCI), Plant Senescence Index (PSRI) and Red-edge Vegetation Index (RVSI) were found to best describe K treatment effects on pineapple canopy reflectance. This study could be extended further to include pineapple varieties other than MD2, and also key nutrients, such as N and P, for better fertilizer management in peat-grown pineapple.
format Article
author Balasundram, Siva K.
Chong, Yen Mee
spellingShingle Balasundram, Siva K.
Chong, Yen Mee
Use of selected spectral ratios to assess the response of pineapple to potassium nutrition
author_facet Balasundram, Siva K.
Chong, Yen Mee
author_sort Balasundram, Siva K.
title Use of selected spectral ratios to assess the response of pineapple to potassium nutrition
title_short Use of selected spectral ratios to assess the response of pineapple to potassium nutrition
title_full Use of selected spectral ratios to assess the response of pineapple to potassium nutrition
title_fullStr Use of selected spectral ratios to assess the response of pineapple to potassium nutrition
title_full_unstemmed Use of selected spectral ratios to assess the response of pineapple to potassium nutrition
title_sort use of selected spectral ratios to assess the response of pineapple to potassium nutrition
publisher UiTM Press
publishDate 2021
url http://psasir.upm.edu.my/id/eprint/93502/
https://jsst.uitm.edu.my/index.php/jsst/article/view/11
_version_ 1755873902086586368
score 13.211869

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