The whitebacked planthopper, Sogatella furcifera Horváth (Homoptera: Delphacidae), is a serious pest of rice crop in Pakistan. In the current study the efficacy of entomopathogenic fungi Beauveria bassiana, Metarhizium anisopliae and Akanthomyces lecanii was evaluated against whitebacked planthopper (WBPH) under laboratory and field conditions. There were two concentrations of entomopathogenic fungi (EPF, 1 × 10⁹ CFU/mL and 1 × 10⁸ CFU/mL) used in the bioassays. Combination of EPF with the insecticide buprofezin at low dose rates (0.001 mg/mL and 0.006 mg/mL) was also evaluated. Results showed that mortality of the pest ranged from 50–80% when EPF was used alone. Mortality of WBPH was 53–90% when buprofezin was combined with EPF. B. bassiana and M. anisopliae were more effective than A. Lecanii. In field trials, EPF were applied at the rate of 2.5 × 10¹² CFU/ha and buprofezin at the rate of 78 g/ha. Relative efficacies of EPF ranged from 40.54–59.17% when only using EPF after 21 days of the first application. Relative efficacy climbed to 71.62% and 70.20% when buprofezin was combined with B. bassiana and M. anisopliae, respectively, after 14 days of the first spray. The results revealed that EPF has the potential to control the population of WBPH. Additionally, their efficacy can be further enhanced by combining them with buprofezin even at low dose rates.

白背飞虱Sogatella furciferaHorváth（Homoptera：Delphacidae）是巴基斯坦水稻的重要害虫。在当前的研究中，在实验室和田间条件下，针对白背飞虱（WBPH）评估了昆虫病原性球孢白僵菌（Berveria bassiana），棉僵菌（Anterhizium anisopliae）和山形假丝酵母（Akanthomyces lecanii）的功效。有两种致病性真菌浓度（EPF，1×10 ⁹  CFU / mL和1×10 ⁸ 生物测定中使用的CFU / mL）。还评估了低剂量率（0.001 mg / mL和0.006 mg / mL）下EPF与杀虫剂丁丙哌嗪的组合。结果表明，单独使用EPF时，害虫的死亡率为50-80％。当布洛芬锌与EPF联用时，WBPH的死亡率为53-90％。B. bassiana和M. anisopliae比A. Lecanii更有效。在田间试验中，EPF的施用量为2.5×10 ¹²  CFU / ha，丁丙哌嗪的施用量为78 g / ha。当首次使用后21天才使用EPF时，EPF的相对效率在40.54-59.17％之间。相对功效攀升至71.62％和70.20％时噻嗪酮用组合白僵菌和绿僵菌，第一次喷洒14天后。结果表明，EPF具有控制WBPH种群的潜力。另外，即使在低剂量率下，通过将它们与丁苯丙哌嗪联用，也可以进一步提高其功效。