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Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm

Oil palm is the golden crop of Malaysia, the vast production of palm oil have made Malaysia the second largest producer after Indonesia. Nitrogen (N) as the basic macronutrient serve as one of major fertilizers contributes to vegetative growth given appropriate manuring and fertilizing. Fronds growt...

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Main Author: Johari, Amiruddin
Format: Project Paper Report
Language:English
Published: 2015
Online Access:http://psasir.upm.edu.my/id/eprint/90146/1/FP%202015%20152%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/90146/
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spelling my.upm.eprints.901462021-08-11T01:17:43Z http://psasir.upm.edu.my/id/eprint/90146/ Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm Johari, Amiruddin Oil palm is the golden crop of Malaysia, the vast production of palm oil have made Malaysia the second largest producer after Indonesia. Nitrogen (N) as the basic macronutrient serve as one of major fertilizers contributes to vegetative growth given appropriate manuring and fertilizing. Fronds growth of oil palm create canopy as the oil palm matured and canopy measurement can indicate vegetation growth. As N is responsible for vegetation growth, plant canopy in term of Leaf Area Index (LAI) that quantifies the amount of foliage area per unit ground surface area can be used as indirect method to asses foliar nitrogen. LAI, is therefore an important parameter controlling many biological and physical processes associated with vegetation on the Earth's surface, such as photosynthesis, respiration, transpiration, carbon and nutrient cycle, and rainfall interception. LAI is a required input to many climate and ecological models. This study conducted in United Malacca Berhad (UMB) plantation, the main objective of the study is to significantly identify the relationship of plant canopy (LAI) to foliar nitrogen content. Different N rates of 0, 1 and 2 kg/palm were applied on oil palm fields planted in 2002 and 2005. The parameters recorded were the LAI readings and foliar N content of the palm. For LAI measurement, PCA LAI-2000 was used to estimate LAI of oil palm. The relationship between foliar N content and LAI value of oil palm leaves were analyzed and the results showed weak relationship explaining these two parameters, where the linear regression illustrated the highest R2 value of 0.253. It is concluded that PCA LAI-2000 is not a reliable tool to estimate foliar N content via LAI or canopy cover consisted in mature oil palms in fields. 2015 Project Paper Report NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/90146/1/FP%202015%20152%20-%20IR.pdf Johari, Amiruddin (2015) Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm. [Project Paper Report]
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 Oil palm is the golden crop of Malaysia, the vast production of palm oil have made Malaysia the second largest producer after Indonesia. Nitrogen (N) as the basic macronutrient serve as one of major fertilizers contributes to vegetative growth given appropriate manuring and fertilizing. Fronds growth of oil palm create canopy as the oil palm matured and canopy measurement can indicate vegetation growth. As N is responsible for vegetation growth, plant canopy in term of Leaf Area Index (LAI) that quantifies the amount of foliage area per unit ground surface area can be used as indirect method to asses foliar nitrogen. LAI, is therefore an important parameter controlling many biological and physical processes associated with vegetation on the Earth's surface, such as photosynthesis, respiration, transpiration, carbon and nutrient cycle, and rainfall interception. LAI is a required input to many climate and ecological models. This study conducted in United Malacca Berhad (UMB) plantation, the main objective of the study is to significantly identify the relationship of plant canopy (LAI) to foliar nitrogen content. Different N rates of 0, 1 and 2 kg/palm were applied on oil palm fields planted in 2002 and 2005. The parameters recorded were the LAI readings and foliar N content of the palm. For LAI measurement, PCA LAI-2000 was used to estimate LAI of oil palm. The relationship between foliar N content and LAI value of oil palm leaves were analyzed and the results showed weak relationship explaining these two parameters, where the linear regression illustrated the highest R2 value of 0.253. It is concluded that PCA LAI-2000 is not a reliable tool to estimate foliar N content via LAI or canopy cover consisted in mature oil palms in fields.
format Project Paper Report
author Johari, Amiruddin
spellingShingle Johari, Amiruddin
Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm
author_facet Johari, Amiruddin
author_sort Johari, Amiruddin
title Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm
title_short Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm
title_full Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm
title_fullStr Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm
title_full_unstemmed Reliability of PCA LAI-2000 to indicate foliar nitrogen content in mature oil palm
title_sort reliability of pca lai-2000 to indicate foliar nitrogen content in mature oil palm
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/90146/1/FP%202015%20152%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/90146/
_version_ 1709669049929039872
score 13.211869

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