Louw Simoné, Paradza Vongai M, van den Berg Johnnie, du Plessis Hannalene
IPM Program, Unit for Environmental Sciences and Management, North-West University, Potchefstroom 2531, South Africa.
Insects. 2025 Jun 24;16(7):656. doi: 10.3390/insects16070656.
Chemical control using synthetic insecticides is the most widely used method for controlling the fall armyworm (FAW), (J.E. Smith) (Lepidoptera: Noctuidae) in Sub-Saharan Africa (SSA). However, the application of insecticides is not a long-term or sustainable solution. Biological control is an important pillar of integrated pest management, and entomopathogenic fungi (EPFs) are becoming increasingly important as biocontrol agents. However, no EPF biopesticides have been registered in South Africa for the control of . Few studies have been conducted on the efficacy of commercial formulations of biopesticides against all life stages. The objective of this study was, therefore, to assess the potential of two (Balsamo-Crivelli) Vuillemin (Hypocreales: Clavicipitaceae) and two (Metschnikoff) Sorokin (Hypocreales: Clavicipitaceae) based commercial biopesticides registered in South Africa against other pests, for their efficacy against . The effects of these EPF formulations were evaluated on larval and prepupal mortality, moth emergence, fecundity, and longevity of the emerged moths. The results indicated that second- and sixth-instar larvae were not susceptible to the biopesticides. Moth emergence, fecundity, and longevity were not significantly affected. However, prepupae were susceptible to both formulations, with ICIPE 78 resulting in the highest mortality (56.7%). This biopesticide holds potential for the management of when applied to the soil for the control of pupating larvae.
使用合成杀虫剂进行化学防治是撒哈拉以南非洲（SSA）防治草地贪夜蛾（FAW）（J.E. 史密斯）（鳞翅目：夜蛾科）最广泛使用的方法。然而，施用杀虫剂并非长期或可持续的解决方案。生物防治是综合虫害管理的重要支柱，昆虫病原真菌（EPFs）作为生物防治剂正变得越来越重要。然而，在南非尚未有用于防治草地贪夜蛾的昆虫病原真菌生物农药注册。关于生物农药商业制剂对草地贪夜蛾所有虫态的功效的研究很少。因此，本研究的目的是评估两种基于南非注册的球孢白僵菌（Balsamo-Crivelli）Vuillemin（肉座菌目：麦角菌科）和绿僵菌（Metschnikoff）Sorokin（肉座菌目：麦角菌科）的商业生物农药对其他害虫的潜力，以及它们对草地贪夜蛾的防治效果。评估了这些昆虫病原真菌制剂对幼虫和预蛹死亡率、成虫羽化、繁殖力以及羽化后成虫寿命的影响。结果表明，二龄和六龄幼虫对生物农药不敏感。成虫羽化、繁殖力和寿命未受到显著影响。然而，预蛹对两种制剂都敏感，其中ICIPE 78导致的死亡率最高（56.7%）。当将这种生物农药施用于土壤以防治化蛹幼虫时，它在草地贪夜蛾的管理方面具有潜力。
