Fall armyworm, Spodoptera frugiperda (Noctuidae: Lepidoptera), is an economically important invasive pest infesting maize. Habitat manipulation as a method of conservation biological control which employs cover crops/hedge rows/flower strips crops in the main crop field to conserve the beneficial insect fauna like natural enemies. An experiment was conducted to study the influence of intercropping of leguminous crops in maize for the management of fall armyworm. Five treatments viz., maize + groundnut (Arachis hypogaea), maize + broad bean (Vicia faba), maize + (Desmodium sp), maize + soybean (Glycine max) and monocrop of maize were evaluated for the severity of damage caused by fall armyworm. The percent plant damage and number of live larvae per 25 plants were significantly less in the maize + Desmodium sp at 9 weeks after planting compared to the monocrop of maize. Significantly higher rates of parasitization of egg mass of fall armyworm by Trichogramma sp were recorded in the maize + broad bean compared to the monocrop of maize. The abundance of Coccinellid predators and geocorid bugs was significantly higher in maize intercropped with groundnut compared to the sole crop of maize. The results of the study indicated the definite role of maize-legume intercropping in reducing fall armyworm damage in maize.

秋夜蛾，夜蛾（Spodoptera frugiperda）（Noctuidae：鳞翅目）是一种在经济上重要的入侵害虫的玉米。栖息地操纵是一种保护性生物防治方法，在主要农作物田地采用掩盖作物/对冲行/花条作物来保护有益昆虫区系，例如天敌。进行了一项实验，研究了豆科作物间作对玉米管理秋季粘虫的影响。五种处理方法，即玉米+花生（花生），玉米+蚕豆（蚕豆），玉米+（脱皮菌），玉米+大豆（大豆））和玉米单季作物评估了秋季粘虫造成的危害的严重性。与单作玉米相比，种植后9周时，玉米+脱皮草（Desmodium sp）中每25株植物的受损百分率和幼虫数量显着减少 。与玉米的单作相比，在玉米+蚕豆中记录到的Trichogramma sp对秋夜蛾虫卵质量的寄生率明显更高。与单独种植玉米的玉米相比，在花生与花生间作的玉米中，球虫捕食者和土生动物的虫子的丰度明显更高。研究结果表明玉米-豆类间作在减少玉米秋季粘虫危害方面具有明确的作用。