Intercropping increases parasitism of pests

被引：259

作者：

Khan, ZR ^{[1
]}

AmpongNyarko, K ^{[1
]}

Chiliswa, P ^{[1
]}

Hassanali, A ^{[1
]}

Kimani, S ^{[1
]}

Lwande, W ^{[1
]}

Overholt, WA ^{[1
]}

Pickett, JA ^{[1
]}

Smart, LE ^{[1
]}

Wadhams, LJ ^{[1
]}

Woodcock, CM ^{[1
]}

机构：

[1] IACR ROTHAMSTED,HARPENDEN AL5 2JQ,HERTS,ENGLAND

来源：

NATURE | 1997年 / 388卷 / 6643期

关键词：

D O I：

10.1038/41681

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

As part of a programme for controlling lepidopteran stem-borers in cereal crops in Africa, we have investigated the effectiveness of combined cropping regimes of cultivatedand wild plants for reducing stem-borer damage. Intercropping with the non-host molasses grass, Melinis minutiflora, significantly decreased levels of infestation by stem-borers in the main crop and also increased larval parasitism of stem-borers by Cotesia sesamiae. Volatile agents produced by M. minutiflora repelled female stem-borers and attracted foraging female C. sesamiae. One of the volatile components released by intact M. minutiflora which attract parasitoids is also produced by herbivore-damaged plants and is implicated more widely as a cue for stimulating predation and parasitism.

引用

页码：631 / 632

页数：2

共 13 条

[1] PLANT NATURAL ENEMY ASSOCIATION IN TRITROPHIC SYSTEM, COTESIA-RUBECULA-PIERIS-RAPAE-BRASSICACEAE (CRUCIFERAE) .3. COLLECTION AND IDENTIFICATION OF PLANT AND FRASS VOLATILES [J].