- Biology, phenology and natural enemies of cabbage webworm
- 作者: Mushtaque, M.; Hassain, S.A. and Mohyuddin, A.I
- literature id: 35374
- catalog nub: TPL_MUSHTA1987BPANE31203150
- 文献库: Taxapad收录文献
- type: article
- publication name: Pakistan Journal of Agricultural Research
- publish date: 1987-01-01
- pages: 312-315
- volume: 7
- issue: 4
- 创建时间: 2021-03-02 15:00:32
- create by: zxmlmq (admin)
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comment:
none. The larvae of cabbage webworm, Hellula undalis attack several crucifers including turnip, radish, cauliflower and leaf cabbage in the plains of Punjab and NWFP. The larvae overwinter in the stems and leaves and bore the shoot ultimately causing plant death. At 25 +- 1 degree C the eggs hatch in four to five days. The larval period lasts 14-17 days and the pupal, 6-8 days. During investigations Bracon sp. Apanteles vitripennis, Eriborus trochanteratus, Chelonus refus and Goniozus sp. were recorded as parasites of H. undalis. However, parasitism of all these was extremely low. The incidence of pest could be considerably reduced if the larvae are destroyed after harvesting the crop.
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