Within-plant distribution of predators on chilli
The within-plant distribution patterns of the predators Coccinellidae (ladybird beetles), Formicidae (ants) and Araneae (spiders) on chilli were traced throughout a crop growing season to formulate the predator sampling unit on chilli plants. The predators were more abundant from main-stem node 0 (m...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Malaysian Agricultural Research and Development Institute (MARDI)
1997
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| Online Access: | http://psasir.upm.edu.my/id/eprint/48917/ http://psasir.upm.edu.my/id/eprint/48917/1/Within-plant%20distribution%20of%20predators%20on%20chilli.pdf |
| _version_ | 1848851220348796928 |
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| author | Maisin, Navies Syed Hassan, Syed Tajuddin Hussein, Mohd Yusof Sajap, Ahmad Said |
| author_facet | Maisin, Navies Syed Hassan, Syed Tajuddin Hussein, Mohd Yusof Sajap, Ahmad Said |
| author_sort | Maisin, Navies |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The within-plant distribution patterns of the predators Coccinellidae (ladybird beetles), Formicidae (ants) and Araneae (spiders) on chilli were traced throughout a crop growing season to formulate the predator sampling unit on chilli plants. The predators were more abundant from main-stem node 0 (main-stem 0 is the uppermost terminal bud) through node 5, due partly to the availability of food sources. As the plant grew, more predators spread out downwards, and their distribution patterns changed parallel to changes in distribution patterns of the prey, their natural enemies and changes in plant morphology due to aging and pest damage. Generally in areas where ants were in abundance, the numbers of other predators were small. Overall this study suggests the selection of zone one (main-stem nodes 0 to 5) as the optimum sampling unit for predators on chilli plants, where the general population proportion per plant for the growing season were 65% for Formicidae, 78% for Coccinellidae and 78% for Araneae. |
| first_indexed | 2025-11-15T10:18:43Z |
| format | Article |
| id | upm-48917 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:18:43Z |
| publishDate | 1997 |
| publisher | Malaysian Agricultural Research and Development Institute (MARDI) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-489172016-12-29T09:55:33Z http://psasir.upm.edu.my/id/eprint/48917/ Within-plant distribution of predators on chilli Maisin, Navies Syed Hassan, Syed Tajuddin Hussein, Mohd Yusof Sajap, Ahmad Said The within-plant distribution patterns of the predators Coccinellidae (ladybird beetles), Formicidae (ants) and Araneae (spiders) on chilli were traced throughout a crop growing season to formulate the predator sampling unit on chilli plants. The predators were more abundant from main-stem node 0 (main-stem 0 is the uppermost terminal bud) through node 5, due partly to the availability of food sources. As the plant grew, more predators spread out downwards, and their distribution patterns changed parallel to changes in distribution patterns of the prey, their natural enemies and changes in plant morphology due to aging and pest damage. Generally in areas where ants were in abundance, the numbers of other predators were small. Overall this study suggests the selection of zone one (main-stem nodes 0 to 5) as the optimum sampling unit for predators on chilli plants, where the general population proportion per plant for the growing season were 65% for Formicidae, 78% for Coccinellidae and 78% for Araneae. Malaysian Agricultural Research and Development Institute (MARDI) 1997 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/48917/1/Within-plant%20distribution%20of%20predators%20on%20chilli.pdf Maisin, Navies and Syed Hassan, Syed Tajuddin and Hussein, Mohd Yusof and Sajap, Ahmad Said (1997) Within-plant distribution of predators on chilli. Journal of Tropical Agriculture and Food Science, 25 (1). pp. 15-23. ISSN 1394-9829; ESSN: 2289-9650 http://ejtafs.mardi.gov.my/index.php/publication/issues/archive/95-1997/volume-25-no1/655-250104 |
| spellingShingle | Maisin, Navies Syed Hassan, Syed Tajuddin Hussein, Mohd Yusof Sajap, Ahmad Said Within-plant distribution of predators on chilli |
| title | Within-plant distribution of predators on chilli |
| title_full | Within-plant distribution of predators on chilli |
| title_fullStr | Within-plant distribution of predators on chilli |
| title_full_unstemmed | Within-plant distribution of predators on chilli |
| title_short | Within-plant distribution of predators on chilli |
| title_sort | within-plant distribution of predators on chilli |
| url | http://psasir.upm.edu.my/id/eprint/48917/ http://psasir.upm.edu.my/id/eprint/48917/ http://psasir.upm.edu.my/id/eprint/48917/1/Within-plant%20distribution%20of%20predators%20on%20chilli.pdf |