Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection Shandong Agricultural University, Tai'an, Shandong 271018, People's Republic of China.
College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, People's Republic of China.
Plant Dis. 2021 Sep;105(9):2466-2471. doi: 10.1094/PDIS-08-20-1851-RE. Epub 2021 Oct 24.
Cereal cyst nematode (), an important plant-parasitic nematode causing yield losses of wheat, has been found in many provinces in China. It is urgent to develop an effective method of protecting wheat from damage. Because of its novel mode of action, fluopyram has been registered for controlling root-knot nematodes on cucumber and tomato in China. However, the bioactivity of fluopyram against and whether this seed treatment can effectively control on wheat remains unknown. In this study, a bioactivity assay revealed that fluopyram increased the mortality of second-stage juveniles (J2), with lethal concentrations (LC) required to kill 50% (LC50) and 90% (LC90) of 0.92 mg⋅liter and 2.92 mg⋅liter respectively. Hatching tests showed that the egg hatching percent was reduced by 35.2 to 69.2% with fluopyram at rates of 1.6 to 6.4 mg⋅liter, and that the egg hatching period was delayed by 3 to 9 days compared with the control. During pot and field trials, fluopyram seed treatment significantly reduced the population density and increased wheat yield by 3.0 to 13.7%. Therefore, fluopyram seed treatment is an effective approach for the management of on wheat in China.
麦类谷实瘿蚊（），一种重要的植物寄生线虫，可导致小麦减产，在中国许多省份均有发现。因此，急需开发一种有效的方法来保护小麦免受其害。氟吡菌酰胺由于其新颖的作用方式，已在中国登记用于防治黄瓜和番茄上的根结线虫。然而，氟吡菌酰胺对麦类谷实瘿蚊的生物活性及其作为种子处理剂是否能有效防治小麦上的麦类谷实瘿蚊还不清楚。本研究通过生物活性测定发现，氟吡菌酰胺可增加麦类谷实瘿蚊二龄幼虫（J2）的死亡率，其致死浓度（LC）50 和 LC90 分别为 0.92mg·L-1 和 2.92mg·L-1。孵化试验表明，氟吡菌酰胺处理浓度为 1.6 至 6.4mg·L-1时，麦类谷实瘿蚊卵的孵化率降低了 35.2%至 69.2%，与对照相比，孵化期延长了 3 至 9 天。温室和田间试验表明，氟吡菌酰胺种子处理可显著降低麦类谷实瘿蚊种群密度，使小麦增产 3.0%至 13.7%。因此，氟吡菌酰胺种子处理是中国防治小麦麦类谷实瘿蚊的一种有效方法。
