Detection of basal stem rot in infected oil palms using a picus sonic tomograph

Martinez Gerardo, . and Arango Mauricio, . (2013) Detection of basal stem rot in infected oil palms using a picus sonic tomograph. [Proceedings Paper]

Basal stem rot BSR is a very well-known disease of oil palm in the producing countries of this crop in Southeast Asia and now is being identified in other countries as Colombia with a shorter history of oil palm production. The identification of the diseased palms had been done by the recognition of distinct symptoms that are evident in advanced stages of the disease in infected palms and by the presence of reproductive stages of Ganoderma spp. one of the main responsible for this disease. With the development of new tools as the PICUS tomograph an instrument to detect decay and cavities in standing trees non-invasively there is an opportunity to identify the presence of damaged areas in the stem of the oil palm. A research project was established in two of the oil palm growing areas in Colombia with records of the presence of basal stem rot cases with the objective to validate the possibility of using the tomograph for the identification of diseased tissue in the oil palm. In these two areas tomograph images were recorded at 10 20 and 30 cm above soil level. In each one of the cases after the tomograph lectures were made the palm was sectioned at each one of the level recorded and a photographic record of the internal appearance of the interior of the palm was made. There were made at least 69 sections en plantations in the North Zone and 153 sections in the Central Zone. The images of the tomograph and the photographic images were compared and as a result of this observations it was established that there was a 100 correlation between the presence of affected areas and the tomograph images and the photographic images of each one of sections being possible to see some cases in which the damage was not so evident but the tomograph images were indicating the presence of a very early stage of rotting going on. These results indicated that it would be possible to detect in a non-invasive manner what is going on inside the oil palm. With the proper training in the management of the tomograph and the interpretation of the images the PICUS tomograph appears to be an important tool in the early detection of diseased palms. This tomograph will be an important tool in the management of this disease with the possibility of intervention of damaged areas to recover palms in early stages of development of the disease or the early elimination of the diseased palms that are being an important source of inoculum for neighbouring palms.

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Abstract

Basal stem rot BSR is a very well-known disease of oil palm in the producing countries of this crop in Southeast Asia and now is being identified in other countries as Colombia with a shorter history of oil palm production. The identification of the diseased palms had been done by the recognition of distinct symptoms that are evident in advanced stages of the disease in infected palms and by the presence of reproductive stages of Ganoderma spp. one of the main responsible for this disease. With the development of new tools as the PICUS tomograph an instrument to detect decay and cavities in standing trees non-invasively there is an opportunity to identify the presence of damaged areas in the stem of the oil palm. A research project was established in two of the oil palm growing areas in Colombia with records of the presence of basal stem rot cases with the objective to validate the possibility of using the tomograph for the identification of diseased tissue in the oil palm. In these two areas tomograph images were recorded at 10 20 and 30 cm above soil level. In each one of the cases after the tomograph lectures were made the palm was sectioned at each one of the level recorded and a photographic record of the internal appearance of the interior of the palm was made. There were made at least 69 sections en plantations in the North Zone and 153 sections in the Central Zone. The images of the tomograph and the photographic images were compared and as a result of this observations it was established that there was a 100 correlation between the presence of affected areas and the tomograph images and the photographic images of each one of sections being possible to see some cases in which the damage was not so evident but the tomograph images were indicating the presence of a very early stage of rotting going on. These results indicated that it would be possible to detect in a non-invasive manner what is going on inside the oil palm. With the proper training in the management of the tomograph and the interpretation of the images the PICUS tomograph appears to be an important tool in the early detection of diseased palms. This tomograph will be an important tool in the management of this disease with the possibility of intervention of damaged areas to recover palms in early stages of development of the disease or the early elimination of the diseased palms that are being an important source of inoculum for neighbouring palms.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SB608 O27M939 2013 Call Number.
AGROVOC Term:	Oil palm
AGROVOC Term:	Integrated disease management
AGROVOC Term:	Disease recognition
AGROVOC Term:	Ganoderma
AGROVOC Term:	Rots
AGROVOC Term:	Tomography
AGROVOC Term:	Imagery
AGROVOC Term:	Photography
AGROVOC Term:	Decay
AGROVOC Term:	Infection
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:15
URI:	http://webagris.upm.edu.my/id/eprint/13219

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