Biological control agents (BCAs) are increasingly used against various plant-parasitic nematode (PPN) pests and offer a favorable alternative to hazardous chemical nematicides. Yet, their lack of efficacy, inconsistent field performance, and/or unfavorable economic factors have generally relegated them to a relatively small sector of pesticide market. Efficacy and biocontrol success can be boosted via holistic grasping of soil biological and ecological factors. Therefore, such factors were highlighted to give better directions for their use. Main points discussed currently are considered to affect the transmission success of these BCAs so that their use must be a way forward in crop protection/pest management. These included improved sampling, grasping BCAs interactions with soil biota and ecology, cost-effective use of BCAs, genetic manipulation for better PPN control, grower acceptance and awareness-raising of BCA techniques, and commercial application.

中文翻译：

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影响用于控制植物寄生线虫的生物制剂成功的因素

生物防治剂（BCA）越来越多地用于对抗各种植物寄生线虫（PPN）害虫，并提供了替代有害化学杀线虫剂的有利方法。然而，它们的功效不足，田间表现不一致和/或不利的经济因素通常使他们只能选择相对较小的农药市场。全面掌握土壤生物学和生态因素可以提高功效和生物防治的成功。因此，强调了这些因素以提供更好的使用指导。目前讨论的要点被认为会影响这些BCA的传播成功，因此在作物保护/害虫管理中，必须将它们的使用作为前进的方向。这些措施包括改进采样，掌握BCA与土壤生物和生态系统的相互作用，BCA的经济有效利用，