Intercropping is an important strategy of pest biological control and has the potential of increasing abundance and diversity of natural enemies. Here we assessed the effect of six management crop systems on the diversity and abundance of mite pests and predatory mites associated to physic nut crops. The following crop systems were evaluated: jack beans (Canavalia ensiformis), guinea grass (Panicum maximum), signal grass (Brachiaria brizantha), cowpea (Vigna unguiculata) in succession to corn (Zea mays), physic nut free of spontaneous plants between-rows, and physic nut with spontaneous plants between-rows. Total number of mites was counted and their abundance, diversity and equitability were determined. The most abundant herbivorous mite species found in all crop systems were Polyphagotarsonemus latus and Tetranychus bastosi. Amblydromalus zannoui, Typhlodromus aripo, Typhlodromus peregrinus and Pronematus sp. were the most abundant predatory mites. Intercropping cowpea in succession to corn favoured the diversity and abundance of predatory mites in physic nut.

中文翻译：

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间作系统对麻疯树螨群落多样性和丰富度的贡献

间作是有害生物生物防治的重要策略，具有增加天敌数量和多样性的潜力。在这里，我们评估了六种管理作物系统对与物理坚果类作物有关的螨虫和掠食性螨的多样性和丰富性的影响。对以下作物系统进行了评估：接替玉米（Zea mays）的杰克豆（Canavalia ensiformis），几内亚草（Panicum maximum），信号草（Brachiaria brizantha），cow豆（Vigna unguiculata）。），两排之间没有自发植物的物理坚果，两排之间没有自发植物的物理坚果。计算螨的总数并确定其丰度，多样性和公平性。在所有农作物系统中发现的最丰富的草食性螨类物种是多角pha（Polyphagotarsonemus latus）和巴氏梭虫（Tetranychus bastosi）。Amblydromalus zannoui，盲走非洲地区知识产权组织，盲走游隼和Pronematus SP。是最丰富的掠食性螨。间作玉米pea豆间作有利于物理坚果中捕食螨的多样性和丰富性。