Assessment of the spatial and temporal proliferation of upper stem rot disease in oil palm plantations (Elaeis Guineensis) in the Kudat Region, Sabah.

Wong, Wan Chew (2005) Assessment of the spatial and temporal proliferation of upper stem rot disease in oil palm plantations (Elaeis Guineensis) in the Kudat Region, Sabah. Universiti Malaysia Sabah. (Unpublished)

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Abstract

This study was initiated to assess the spatial and temporal variation to predict the distribution of the Upper Stem Rot (USR) disease in Kudat region, Sabah. The USR disease status was visually recorded according to 10 stages and carried out in Block 3S and 4S within the Langkong estate (N06°30'39.8", E116°42'30.5") from 1997 until 2004. Data analyzed through employing post map (Surfer Version 7 software package) to investigate pattern of preferential distribution and hotspots of USR disease incidences (Crimestat software package). Block 3S and 4S appear a total of 24% of spatial relationship in experimental semi-variogram modelling although they represented that weak spatial dependence existed between them. There has a close relationship in Block 3S and 4S between Ganoderma fruiting bodies and fallen palm incidences in the following year by chronological events. On the other hand, upper stem fracture and skirting incidences did not showed any relationship, and between them with Ganoderma fruiting bodies and fallen palm incidences. From this present result, concluded that upper stem rot incidence was not caused by Ganoderma fruiting bodies. Long-term monitoring of disease stages of USR is required to resolve temporal proliferation of the Ganoderma disease in both blocks.

Item Type: Academic Exercise
Uncontrolled Keywords: Upper Stem Rot disease, Ganoderma, proliferation, temporal variation, spatial, Crimestat software
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 18 Mar 2014 06:20
Last Modified: 13 Oct 2017 01:27
URI: http://eprints.ums.edu.my/id/eprint/8535

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