Intercropping of aromatic plants provides an environmentally benign route to reducing pest damage in agroecosystems. However, the effect of intercropping on natural enemies, another element which may be vital to the success of an integrated pest management approach, varies in different intercropping systems. Rosemary, Rosmarinus officinalis L. (Lamiaceae), has been reported to be repellent to many insect species. In this study, the impact of sweet pepper/rosemary intercropping on pest population suppression was evaluated under greenhouse conditions and the effect of rosemary intercropping on natural enemy population dynamics was investigated. The results showed that intercropping rosemary with sweet pepper significantly reduced the population densities of three major pest species on sweet pepper, Frankliniella intonsa, Myzus persicae, and Bemisia tabaci, but did not affect the population densities of their natural enemies, the predatory bug, Orius sauteri, or parasitoid, Encarsia formosa. Significant pest population suppression with no adverse effect on released natural enemy populations in the sweet pepper/rosemary intercropping system suggests this could be an approach for integrated pest management of greenhouse-cultivated sweet pepper. Our results highlight the potential of the integration of alternative pest control strategies to optimize sustainable pest control.

中文翻译：

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间作迷迭香（迷迭香）与甜椒（辣椒）减少主要害虫种群密度，而不会影响自然敌人的种群。

套种芳香植物为减少农业生态系统中的有害生物损害提供了一条环境友好的途径。但是，套种对天敌的影响是另一个可能对虫害综合防治方法的成功至关重要的要素，但在不同的套种系统中，套种对天敌的影响各不相同。迷迭香，迷迭香（蔷薇科），据报道对许多昆虫种类具有驱避作用。在这项研究中，在温室条件下评估了甜椒/迷迭香间作对害虫种群抑制的影响，并研究了迷迭香间作对天敌种群动态的影响。结果表明，将间作迷迭香与甜椒套种可显着降低甜椒上三种主要害虫的种群密度，富兰克氏菌（Frankliniella intonsa），桃蚜（Myzus persicae）和烟粉虱（Bemisia tabaci）并没有影响其天敌即掠食性昆虫Orius sauteri或寄生虫Encarsia formosa的种群密度。在甜椒/迷迭香间作系统中，对有害生物种群的抑制作用不大，对释放的天敌种群没有不利影响，这表明这可能是温室栽培甜椒综合有害生物管理的一种方法。我们的结果突出了整合替代性虫害控制策略以优化可持续性虫害控制的潜力。