Abstract Pesticides are widely used to protect crops against insect pests and diseases. However, current conventional pest management strategies can severely impact environmental and human health. Therefore, it is timely to find an alternative to conventional chemical control in order to counteract the negative effects of pesticides. Integrated Pest Management (IPM) represents a promising alternative in vegetable production to reduce pesticide use while also maintaining acceptable yields. In this study, we compared an IPM strategy with conventional management and a no-spray control for managing arthropod pests and pathogens in yard-long bean (Vigna unguiculata subsp. Sesquipedalis), an important crop in Southeast Asia. We conducted the study during two crop cycles (rainy and dry season) on 24 farms (12 per season) spread across the Soutr Nikum district of Siem Reap, Cambodia. In both seasons, our IPM strategy controlled overall pest levels better than conventional pest management, which exhibited better pest control than the no-spray control. This pattern was not reflected by yields, however, since dry season yields were similar across all three treatments (conventional = 1.68, IPM = 1.73, control = 1.52 kg m−2), and rainy season yields were similar between conventional and IPM treatments, which were higher than yields in the no-spray control treatment (conventional = 1.74, IPM = 1.71, no-spray control = 1.33 kg m−2). The costs of IPM were higher than conventional management, which contributed to lower profits in the IPM treatments in both seasons despite yields being as high as in conventional production. Therefore, future efforts should focus on increasing the profitability of IPM production.

中文翻译：

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柬埔寨长豆（Vigna unguiculata subsp. Sesquipedalis）病虫害综合治理

摘要 农药被广泛用于保护农作物免受病虫害。然而，当前的传统害虫管理策略会严重影响环境和人类健康。因此，及时寻找替代常规化学控制的方法以抵消农药的负面影响。综合虫害管理 (IPM) 是蔬菜生产中一种很有前景的替代方案，可以减少农药使用，同时保持可接受的产量。在这项研究中，我们将 IPM 策略与常规管理和无喷雾控制进行了比较，以管理东南亚重要作物长豆（Vigna unguiculata subsp. Sesquipedalis）中的节肢动物害虫和病原体。我们在柬埔寨暹粒南尼库姆地区的 24 个农场（每季 12 个）的两个作物周期（雨季和旱季）进行了这项研究。在这两个季节中，我们的 IPM 策略比常规虫害管理更好地控制了整体虫害水平，比不喷洒控制表现出更好的虫害控制。然而，这种模式并未反映在产量上，因为所有三个处理的旱季产量相似（常规 = 1.68，IPM = 1.73，对照 = 1.52 kg m-2），而雨季产量在常规和 IPM 处理之间相似，高于无喷雾控制处理的产量（常规 = 1.74，IPM = 1.71，无喷雾控制 = 1.33 kg m-2）。IPM的成本高于常规管理，尽管产量与传统生产一样高，但这导致两个季节 IPM 处理的利润较低。因此，未来的努力应侧重于提高 IPM 生产的盈利能力。