Dead-end trap cropping: a technique to improve management of the diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae)
نویسندگان
چکیده
Use of non-glossy collards as a trap crop for control of the diamondback moth, Plutella xylostella (L.), in commercial fields of cabbage in New York was unsuccessful because it neither reduced the number of larvae on cabbage nor concentrated the insects on collards. In laboratory and outdoor screenhouse experiments, P. xylostella preferentially laid its eggs on the glossy-type Barbarea vulgaris, a common biennial weed, when compared with broccoli and cabbage. Ovipositional preference in the screenhouse trials varied from 24 to 66 fold for B. vulgaris. However, no larvae were able to develop on B. vulgaris. More importantly, cabbage plants in screenhouses with B. vulgaris had fewer eggs laid on them than cabbage plants in screenhouses without B. vulgaris. We therefore suggest that B. vulgaris, or another plant species that is highly attractive for egg laying, but on which P. xylostella larvae do not survive, may serve as a ‘dead-end’ trap crop and be more successful than trap crop types that may only have increased oviposition. However, candidate dead-end trap crops must also be evaluated for their effects on other insects, diseases and weed management before such plants can be recommended in an overall pest management program. r 2003 Elsevier Ltd. All rights reserved.
منابع مشابه
Laboratory evaluations of a wild crucifer Barbarea vulgaris as a management tool for the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae).
The term 'dead-end trap cropping' has recently been proposed to identify a plant that is highly attractive for oviposition by an insect pest, but on which offspring of the pest cannot survive. The potential of the wild crucifer Barbarea vulgaris R. Br. to allure and serve as a dead-end trap crop for the diamondback moth Plutella xylostella (L.), an important pest of cruciferous crops worldwide,...
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Potential trap crops for the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), were evaluated through a series of ovipositional preference and larval survival experiments in outdoor screenhouses in 2002 and 2003. Hosts examined as trap crops were glossy and waxy collards, Brassica oleracea L. variety acephala; Indian mustard, Brassica juncea (L.) Czern; and yellow rocket,Ba...
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Yellow rocket, Barbarea vulgaris (R. Br.) variety arcuata, was evaluated as a trap crop for diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), in cabbage, Brassica oleracea L. variety capitata, in 2003 and 2004. In 2003, the numbers of P. xylostella larvae found in field plots of cabbage alone were 5.2-11.3 times higher than those on cabbage plants in plots that included cab...
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