Fluopyram, an excellent nematicide, has better water solubility than abamectin; this feature is important for its systemic transport in trees as a trunk-injection agent. To identify the potential of fluopyram as a trunk-injection agent against Bursaphelenchus xylophilus, its toxicity to different developmental stages and effects on the egg hatching and reproduction of B. xylophilus were studied. Fluopyram exhibited significant nematicidal activity similar to that of abamectin, with LC₅₀ values of 0.945, 1.69 and 3.23 mg L^− 1 for second-stage juveniles (J2), third-stage juveniles (J3) and fourth-stage juveniles/adults (J4/adults), respectively. The hatching rate at a fluopyram concentration of 3 mg L^− 1 was 20.78%, significantly lower than that in the control group (90.48%) at 24 h. In addition, the reproduction of B. xylophilus at a concentration of 2.21 mg L^− 1 decreased significantly, similar to the effect of abamectin at 1.42 mg L^− 1. In a hydroponic experiment, fluopyram treatment decreased the number of B. xylophilus at a concentration of 64 mg L^− 1. Fluopyram exhibited a greater inhibitory effect than abamectin. Overall, fluopyram has significant nematicidal activity against B. xylophilus and shows potential to be a new trunk-injection agent.

Fluopyram是一种出色的杀线虫剂，其水溶性比阿维菌素更好。此功能对其在树干中作为树干注射剂的系统运输非常重要。为了鉴定氟吡菌酰胺的电位作为针对干线喷射剂松材线虫，其毒性到不同发育阶段和效果在卵孵化和再现松材线虫进行了研究。氟吡草酯显示出与阿维菌素相似的显着杀线虫活性，第二阶段的少年（J2），第三阶段的少年（J3）和第四阶段的少年/成人（J4）的LC ₅₀值为0.945、1.69和3.23 mg L ^-1。 /成人）。氟吡喃浓度为3 mg L ^-1时的孵化率24小时时的血铅水平为20.78％，明显低于对照组的90.48％。此外，浓度为2.21 mg L ^-1的木糖双歧杆菌的繁殖显着下降，与阿维菌素1.42 mg L ^-1的作用相似。在水培试验中，氟吡草胺处理以64 mg L ^-1的浓度减少了木糖双歧杆菌的数量。氟吡草胺比阿维菌素具有更大的抑制作用。总体而言，氟吡草胺对木糖双歧杆菌具有明显的杀线虫活性，并显示出成为新的树干注射剂的潜力。