Cowpea (Vigna unguiculata) crops stand out for their efficient adaptation to edaphoclimatic conditions. Insect pests, such as the leaf beetle Cerotoma arcuata, are among the main factors that limit cowpea yield. Chemical control methods are commonly used to control such pests; however, biological methods are an alternative to reduce the indiscriminate use of conventional pesticides. This study aimed to evaluate the effects of Beauveria bassiana inoculation on the growth and physiological parameters of the cowpea plant and assess the influence of the inoculation on the feeding performance and survival of C. arcuata adults. Colonization by B. bassiana was recorded in the stems (63.89%), roots (45.83%), and leaves (25%) of the cowpea plant. It was found that B. bassiana enhanced the plant height, number of leaves, and the dry mass of the inoculated cowpea plants as compared to the control. The treated plants exhibited higher net carbon dioxide (CO₂) assimilation rates in the gas exchange evaluation as well as higher stomatal conductance, evapotranspiration rates, and chlorophyll (a + b) content than the control plants. Moreover, the Kaplan–Meier survival analysis showed that the B. bassiana negatively affected the survival of the insect in the leaf disc assays.

豇豆 ( Vigna unguiculata ) 作物因其对土壤气候条件的有效适应而脱颖而出。害虫，例如叶甲虫Cerotoma arcuata，是限制豇豆产量的主要因素之一。化学防治方法通常用于防治此类害虫；然而，生物方法是减少滥用常规杀虫剂的替代方法。这项研究的目的是评估的影响白僵菌接种在豇豆植物的生长和生理参数和评估的进纸性能和生存接种的影响C. arcuata成年人。B. bassiana 的殖民化记录在豇豆植物的茎 (63.89%)、根 (45.83%) 和叶 (25%) 中。发现与对照相比，B. bassiana提高了接种的豇豆植物的株高、叶数和干重。与对照植物相比，处理过的植物在气体交换评估中表现出更高的净二氧化碳 (CO ₂ ) 同化率以及更高的气孔导度、蒸散率和叶绿素 ( a  +  b ) 含量。此外，Kaplan-Meier 生存分析表明，B. bassiana在叶盘检测中对昆虫的生存产生负面影响。