Management of Needle-Eating Caterpillars Associated with <i>Pinus massoniana</i> and <i>P. merkusii</i> in Vietnam
Pine tussock moth (<i>Dasychira axutha</i> Collenette (Lymantriidae)) and masson pine caterpillar (<i>Dendrolimus punctatus</i> Walker (Lasiocampidae)) cause serious damage to <i>Pinus massoniana</i> and <i>P. merkusii</i> plantations in Vietnam. An in...
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| Autores principales: | , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/77f6638348fe44c8ad0bed2b68416999 |
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| Sumario: | Pine tussock moth (<i>Dasychira axutha</i> Collenette (Lymantriidae)) and masson pine caterpillar (<i>Dendrolimus punctatus</i> Walker (Lasiocampidae)) cause serious damage to <i>Pinus massoniana</i> and <i>P. merkusii</i> plantations in Vietnam. An integrated pest management (IPM) program is required to control these pests. Therefore, this study was undertaken to identify damage thresholds and to evaluate control options for implementing IPM in the Northeast and North Central regions of Vietnam. Three damage thresholds were considered: <25%, 25%–50% and >50% loss of leaf area. Control options were manual collection of eggs and pupae and the use of light traps and biological agents. An initial IPM model was developed for each pest and these gave control efficacies of 82.4% (<i>Da. axutha</i> on <i>P. massoniana</i>) and 77.8% (<i>De. punctatus</i> on <i>P. merkusii</i>). Six extended IPM models were undertaken by forest companies giving pest control efficacies of 79.2%–85.9%. The collection of pine resin provides an important source of income to local communities and the resin yield in the IPM models increased by 20.9%–22.7% compared to untreated control plots. The IPM protocols would help in developing policies that promote a more sustainable management of forest pests in Vietnam, thus reducing dependence on the use of insecticides of environmental and public health concerns. |
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