The evaluation of Bagworm, Metisa Plana (Lepidoptera: Psychidae) infestation and beneficial Parasitoids in oil palm (Elaeis Guinensis) plantations in Felda Gunung Besout 2, Perak, Malaysia
Oil palm (Elaeis guinensis) plantation is one of the economic pillars of countries rich inbiodiversity in tropical regions. In oil palm plantation, pests and diseases are the major problemsthat cause low production in oil palm. Bagworm, Metisa plana (Lepidoptera: Psychidae) are the mostdestructive p...
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| Format: | thesis |
| Language: | eng |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://ir.upsi.edu.my/detailsg.php?det=6705 |
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| Summary: | Oil palm (Elaeis guinensis) plantation is one of the economic pillars of countries rich inbiodiversity in tropical regions. In oil palm plantation, pests and diseases are the major problemsthat cause low production in oil palm. Bagworm, Metisa plana (Lepidoptera: Psychidae) are the mostdestructive pest in oil palm plantations in Malaysia, resulting in high yield losses of up to 43%over two years after infestation. Therefore, this study was aimed to examine bagworminfestations, their damaging impacts based on bagworm stages, and the damages occurred in theoil palm plantations in Felda Gunung Besout 2. A total of 57 palm trees weresystematically selected, and bagworm and parasitoid samples were collected from severalselected areas in two stages. At first stage, nine (9) fronds were randomly picked from eachtree. The severity of bagworm infestations was measured based on the severity scale of damagesymptoms caused by bagworms. At second stage, parasitoids were collected from the same oil palmtrees by hand and with yellow sticker traps before being identified in the laboratory. The resultsshowed that infestation rates in the selected oil palm plantations were 50.9%, 31.6%, 4% and 3.5%,which were rated as high, moderate, low, and very low, respectively. The results also showedstage-seven bagworms were the most destructive pest, followed by stage-one, six, and five.According to the result, several potential parasitoids were identified with the highest Eulophidae: Tetrastichus sp., which belong to the Hymenoptera order. Thesefindings will provide great information for planters and researchers about the bagwormstages and their impacts on the infection rates in oil palm plantations. Thus, enablinga more effective biological control to reduce oreliminate bagworms from oil palm plantations in total. |
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