以更环保的方式对根结线虫进行充分控制的新型杀线虫剂的研究引起了蔬菜种植者的极大兴趣。因此，家电清洗13825404095氟吡菌酰胺是一种相对较新的化学杀线虫剂，在体外、土壤中以及作为番茄、莴苣和黄瓜植物的种植穴处理剂对瑞士南方根结线虫种群进行了评估。氟吡菌酰胺体外处理显示暴露 1-14 天后 LC50（致死浓度，50%）范围为 2.15-0.04 µmol/L。然而，一些线虫（视觉上归类为死亡）能够恢复并感染黄瓜植物。氟吡菌酰胺的最佳施用时间似乎在种植后1天，对南方根结线虫具有显着的防治效果种植后长达 14 天。根穿透试验表明，氟吡菌酰胺仅控制残留在根际的线虫。此外，氟吡菌酰胺对生菜、番茄和黄瓜植物的种植孔处理，在温室条件下成功地控制了根区的南方根瘤菌。总体而言，本研究有助于优化氟吡菌酰胺在蔬菜作物中防治南方根结线虫的应用，突出其在土壤中的有效性，并显示其在防治已经侵入植物根系的幼虫方面的局限性。
Fluopyram: Optimal Application Time Point and Planting Hole Treatment to Control Meloidogyne incognita
Research into new nematicides that provide adequate control against root-knot nematodes in a more environment-friendly way is of great interest to vegetable growers. Thus, the effect of fluopyram, a relatively new chemical nematicide, was evaluated against a Swiss population of Meloidogyne incognita in vitro, in soil and as a planting hole treatment for tomato, lettuce and cucumber plants. Fluopyram treatment in vitro revealed LC50 (lethal concentration, 50%) ranging from 2.15–0.04 µmol of fluopyram/L after 1–14 days of exposure. However, some nematodes (visually categorized as dead) were able to recover and infect cucumber plants. Fluopyram’s optimal application time appeared to be up to 1 day after planting, with a significant control effect on M. incognita up to 14 days after planting. A root penetration assay showed that only nematodes that remained in the rhizosphere were controlled by fluopyram. Furthermore, fluopyram planting hole treatments on lettuce, tomato and cucumber plants, successfully controlled M. incognita in the root zone under greenhouse conditions. Overall, this study contributes to an optimized application of fluopyram for the control of M. incognita in vegetable crops, highlighting its effectiveness in soil and showing its limitation to control juveniles that have already invaded the root systems of plants.
