Key Laboratory of Pesticide Toxicology &Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P.R. China.
College of Plant Protection, Nanjing Agricultural University, Nanjing, Jiangsu 210018, P.R. China.
Sci Rep. 2017 Jan 25;7:41161. doi: 10.1038/srep41161.
Tomato growers commonly face heavy nematode (Meloidogyne incognita) and whitefly (B-biotype Bemisia tabaci) infestations, and previous studies demonstrated that thiacloprid could be used to control M. incognita and B. tabaci in cucumber. However, the efficacy of a single basal application of thiacloprid to control both pests and its effect on yield in tomato remains unknown. In this study, the potential of thiacloprid application to the soil for the integrated control of M. incognita and B. tabaci in tomato was evaluated in the laboratory and the field. Laboratory tests showed that thiacloprid was highly toxic to whitefly adults and eggs with an average lethal concentration 50 (LC) of 14.7 and 62.2 mg ai L, respectively, and the LC of thiacloprid for nematode J2s and eggs averaged 36.2 and 70.4 mg ai L, respectively. In field trials, when thiacloprid was applied to the soil at 7.5, 15 and 30 kg ha in two consecutive years, whitefly adults decreased by 37.8-75.4% within 60 days of treatment, and the root-galling index was reduced by 31.8-85.2%. Optimum tomato plant growth and maximum yields were observed in the 15 kg ha treatment. The results indicated that a single basal application of thiacloprid could control M. incognita and B. tabaci and enhance tomato growth and yield.
番茄种植者通常面临严重的线虫（Meloidogyne incognita）和粉虱（B 型烟粉虱 Bemisia tabaci）的侵害，先前的研究表明噻虫啉可用于防治黄瓜上的 M. incognita 和 B. tabaci。然而，单一基础施用噻虫啉防治这两种害虫及其对番茄产量的影响尚不清楚。在这项研究中，评估了噻虫啉在土壤中的应用潜力，以实现番茄上 M. incognita 和 B. tabaci 的综合防治。实验室测试表明，噻虫啉对粉虱成虫和卵具有高毒性，平均致死浓度 50（LC）分别为 14.7 和 62.2mg ai L，噻虫啉对 J2 和卵的 LC 分别为 36.2 和 70.4mg ai L。在田间试验中，当噻虫啉在两年内以 7.5、15 和 30kg ha 的剂量施用于土壤时，处理后 60 天内粉虱成虫减少 37.8-75.4%，根瘤指数降低 31.8-85.2%。在 15kg ha 的处理中观察到番茄植株生长最佳和产量最高。结果表明，单一基础施用噻虫啉可以控制 M. incognita 和 B. tabaci 并促进番茄生长和产量。
