Mapping the nitrogen status on immature oil palm area in Malaysian oil palm plantation with autopilot tractor-mounted active light sensor

Rohaida Mohammad, . and El Pebrian Darius, . and Mohammad Anas Azmi, . and Ezrin Mohd Husin, . Mapping the nitrogen status on immature oil palm area in Malaysian oil palm plantation with autopilot tractor-mounted active light sensor. pp. 629-642. ISSN 2811-4701

This study was conducted to identify and visualise spatially the Nitrogen (N) status on immature oil palm area with an autopilot tractor-mounted active light sensor (ALS) in a Malaysian oil palm plantation. All the measurements taken by the ALS were assessed on-the-go at every second while the tractor was moving on the field with autopilot steering mode. The N status was analysed based on 46 of the N content in urea and 40 kg ha“1 N application rate for a standard fertiliser requirement for immature oil palm. The ordinary kriging method was used to produce the interpolated maps of the N status by means of the ArcGIS 10.3 software. It was found that mean N-as applied rate per hectare read by the sensor was 1.62 lower than the recommended one. By showing such very small difference in mean rates generally the system showed its effectiveness in monitoring N status on immature oil palm. The interpolated maps also successfully displayed spatial variability of the N status on immature oil palm area which are useable for reference in applying variable rate application (VRA) to economise the use of fertiliser on the said crop.

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Abstract

This study was conducted to identify and visualise spatially the Nitrogen (N) status on immature oil palm area with an autopilot tractor-mounted active light sensor (ALS) in a Malaysian oil palm plantation. All the measurements taken by the ALS were assessed on-the-go at every second while the tractor was moving on the field with autopilot steering mode. The N status was analysed based on 46 of the N content in urea and 40 kg ha“1 N application rate for a standard fertiliser requirement for immature oil palm. The ordinary kriging method was used to produce the interpolated maps of the N status by means of the ArcGIS 10.3 software. It was found that mean N-as applied rate per hectare read by the sensor was 1.62 lower than the recommended one. By showing such very small difference in mean rates generally the system showed its effectiveness in monitoring N status on immature oil palm. The interpolated maps also successfully displayed spatial variability of the N status on immature oil palm area which are useable for reference in applying variable rate application (VRA) to economise the use of fertiliser on the said crop.

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Item Type:	Article
AGROVOC Term:	Oil palm
AGROVOC Term:	Plantations
AGROVOC Term:	Nitrogen fertilizers
AGROVOC Term:	precision agriculture
AGROVOC Term:	Crop management
AGROVOC Term:	Remote sensing
AGROVOC Term:	Agricultural machinery (industry)
AGROVOC Term:	Cultivation
AGROVOC Term:	Mapping
AGROVOC Term:	Data collection
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/10270

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