Distribution of infected oil palms with Ganoderma basal stems root disease
The objective of this study is to spatially identify the pattern of Ganoderma disease under natural field epidemic using three different spatial point pattern analyses, which are nearest neighbor analysis and refined nearest neighbor analysis for first order spatial analysis, and Ripley’s K functi...
| _version_ | 1825713380921442304 |
|---|---|
| author | Assis Kamu Chong, Khim Phin Idris Abu Seman Ho, Chong Mun |
| author_facet | Assis Kamu Chong, Khim Phin Idris Abu Seman Ho, Chong Mun |
| author_sort | Assis Kamu |
| collection | UMS |
| description | The objective of this study is to spatially identify the pattern of Ganoderma disease under natural field
epidemic using three different spatial point pattern analyses, which are nearest neighbor analysis and refined
nearest neighbor analysis for first order spatial analysis, and Ripley’s K function for second order spatial analysis.
Three commercial oil palm sites with three replicate areas per site were selected in this study with different age of
palm tree. The nearest neighbor analysis showed that the spatial distribution of the infected palms in all the
replicate areas at SKE0224 was clustered. Refined nearest neighbor analysis and Ripley’s K function also showed
that the distribution of the infected palms in all the areas studied was clustered. But statistical test through Monte
Carlo simulation showed that the cluster distribution of the infected palms in most of the areas studied was not
statistically significant. Nevertheless, the study has proved that the spatial distribution of the infected palms under
natural epidemic is not random, disperse or uniform but it is more to cluster pattern. This suggests the spread of the
disease could be from tree to tree possibly through root contact as proved by many past studies. |
| first_indexed | 2024-03-06T02:55:41Z |
| format | Article |
| id | ums.eprints-19375 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T02:55:41Z |
| publishDate | 2015 |
| publisher | Journal of Scientific Research and Development |
| record_format | dspace |
| spelling | ums.eprints-193752021-04-30T02:54:11Z https://eprints.ums.edu.my/id/eprint/19375/ Distribution of infected oil palms with Ganoderma basal stems root disease Assis Kamu Chong, Khim Phin Idris Abu Seman Ho, Chong Mun SB Plant culture The objective of this study is to spatially identify the pattern of Ganoderma disease under natural field epidemic using three different spatial point pattern analyses, which are nearest neighbor analysis and refined nearest neighbor analysis for first order spatial analysis, and Ripley’s K function for second order spatial analysis. Three commercial oil palm sites with three replicate areas per site were selected in this study with different age of palm tree. The nearest neighbor analysis showed that the spatial distribution of the infected palms in all the replicate areas at SKE0224 was clustered. Refined nearest neighbor analysis and Ripley’s K function also showed that the distribution of the infected palms in all the areas studied was clustered. But statistical test through Monte Carlo simulation showed that the cluster distribution of the infected palms in most of the areas studied was not statistically significant. Nevertheless, the study has proved that the spatial distribution of the infected palms under natural epidemic is not random, disperse or uniform but it is more to cluster pattern. This suggests the spread of the disease could be from tree to tree possibly through root contact as proved by many past studies. Journal of Scientific Research and Development 2015 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/19375/1/Distribution%20of%20infected%20oil%20palms%20with%20Ganoderma%20basal%20stems%20root%20disease.pdf text en https://eprints.ums.edu.my/id/eprint/19375/7/13.Distribution%20of%20infected%20oil%20palms%20with%20Ganoderma%20basal%20stems%20root%20disease.pdf Assis Kamu and Chong, Khim Phin and Idris Abu Seman and Ho, Chong Mun (2015) Distribution of infected oil palms with Ganoderma basal stems root disease. Journal of Scientific Research and Development, 2 (10). pp. 49-55. ISSN 1115-7569 http://jsrad.org/wp-content/2015/Issue%2010,%202015/9j.pdf |
| spellingShingle | SB Plant culture Assis Kamu Chong, Khim Phin Idris Abu Seman Ho, Chong Mun Distribution of infected oil palms with Ganoderma basal stems root disease |
| title | Distribution of infected oil palms with Ganoderma basal stems root disease |
| title_full | Distribution of infected oil palms with Ganoderma basal stems root disease |
| title_fullStr | Distribution of infected oil palms with Ganoderma basal stems root disease |
| title_full_unstemmed | Distribution of infected oil palms with Ganoderma basal stems root disease |
| title_short | Distribution of infected oil palms with Ganoderma basal stems root disease |
| title_sort | distribution of infected oil palms with ganoderma basal stems root disease |
| topic | SB Plant culture |
| url | https://eprints.ums.edu.my/id/eprint/19375/1/Distribution%20of%20infected%20oil%20palms%20with%20Ganoderma%20basal%20stems%20root%20disease.pdf https://eprints.ums.edu.my/id/eprint/19375/7/13.Distribution%20of%20infected%20oil%20palms%20with%20Ganoderma%20basal%20stems%20root%20disease.pdf |
| work_keys_str_mv | AT assiskamu distributionofinfectedoilpalmswithganodermabasalstemsrootdisease AT chongkhimphin distributionofinfectedoilpalmswithganodermabasalstemsrootdisease AT idrisabuseman distributionofinfectedoilpalmswithganodermabasalstemsrootdisease AT hochongmun distributionofinfectedoilpalmswithganodermabasalstemsrootdisease |