Systemic nematicidal activity of fluensulfone against the root-knot nematode Meloidogyne incognita on pepper
Systemic nematicidal activity of fluensulfone against the root-knot nematode Meloidogyne incognita on pepper
复制标题
DOI：
10.1002/ps.2256
复制
发表时间：
2012-02-01
影响因子：
4.1
通讯作者：
Tkachi, Nadia
中科院分区：
文献类型：
--
作者：
Oka, Yuji;Shuker, Shimshon;Tkachi, Nadia
背景：氟苯磺隆是一种新型氟代烯基杀线虫剂，已被证明通过土壤施用可非常有效地控制根结线虫（Meloidogyne spp.）。通过土壤淋洗和叶面喷洒，评估了该化合物对辣椒上南方根结线虫的内吸活性。结果：通过土壤淋施氟苯磺隆的根部施用，在接种后 4 天和 10 天分别施用时，显示出轻微的线虫控制活性和没有线虫控制活性。接种前用 3.0 g L-1 的氟苯磺隆溶液对辣椒进行单次叶面喷洒，可使对照指数减少 80%，线虫卵数量减少 73-82%。在相同浓度下，芴螨磺对这些参数的降低远高于使用草酰灵或苯线磷所获得的降低效果。当在接种前 21 天喷洒植物时也观察到了这种活性。一系列实验表明，在接种前叶面喷洒氟烯磺可以减少线虫的入侵。然而，接种后叶面喷施并不能抑制根内线虫的发育。结论：接种前叶面喷施氟烯磺具有较高的防治线虫活性。除土壤施用外，氟烯磺还可用作叶面施用，用于控制根结线虫。 (C) 2011年化学工业学会
BACKGROUND: Fluensulfone, a new nematicide of the fluoroalkenyl group, has proved to be very effective in controlling root-knot nematodes, Meloidogyne spp., by soil application. The systemic activity of this compound against M. incognita on peppers via soil drenching and foliar spray was evaluated.RESULTS: Root application of fluensulfone via soil drenching showed slight and no nematode control activity when applied 4 and 10 days, respectively, after inoculation. A single foliar spray of peppers with a fluensulfone solution at 3.0 g L-1 prior to inoculation reduced the galling index by 80% and the number of nematode eggs by 73- 82% of controls. The reduction in these parameters by fluensulfone was much higher than that obtained with oxamyl or fenamiphos at the same concentration. This activity was also observed when the plants were sprayed 21 days before inoculation. A series of experiments suggested that foliar spray with fluensulfone prior to inoculation reduces nematode invasion. However, foliar spray after inoculation did not inhibit nematode development inside roots.CONCLUSION: Fluensulfone showed relatively high nematode control activity when sprayed on the foliage before inoculation. Fluensulfone may be used as a foliar application, in addition to soil application, for root- knot nematode control. (C) 2011 Society of Chemical Industry