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Integrated effect of insecticide and sex pheromone on the tomato leafminer, Tuta absoluta (Lepidoptera: Gelechiidae)
Crop Protection ( IF 2.8 ) Pub Date : 2023-05-20 , DOI: 10.1016/j.cropro.2023.106285
Tadele Jabamo , Gashawbeza Ayalew , Muluken Goftishu , Mulatu Wakgari

The tomato leafminer, Tuta absoluta (Meyrick), is currently a major threat to tomato globally. Growers in Ethiopia rely on insecticides to control the pest, which is not sustainable because of the insect's ability to develop resistance fast. The rational use of pesticides is useful to delay pesticide resistance. The integrated effect of sex pheromone and insecticide in the population of the tomato leafminer and its damage on tomato was investigated for two seasons between 2020 and 2021 at Melkassa center of the Ethiopian Institute of Agricultural Research (EIAR). Treatments consisted of trapping using sex pheromone alone, insecticide use alone and a combination of trapping using sex pheromone and insecticide (integrated treatment) along with the untreated control. Four fields, each with three replicates of plots for each treatment were used by keeping each field wide apart to minimize the movement of adult population of the insect. Treatment effects were assessed by counting the immature stages of the insect and damage both on the leaves and tomato fruits. Treatments differed significantly for mining larvae but not for the number of eggs. Leaf damage was significantly higher in the untreated control than in the rest of the treatments. In both years, similar trends of results for the percentage of damaged fruits were observed, which was lowest in the integrated treatment followed by insecticide alone, pheromone trap alone and untreated control. Results from this study suggest the need to integrate pheromone traps with insecticides to achieve better protection from Tuta absoluta damage on tomato.



中文翻译:

杀虫剂和性信息素对番茄潜叶虫 Tuta absoluta(鳞翅目:潜叶蛾科)的综合作用

番茄潜叶虫,Tuta absoluta(Meyrick),目前是全球番茄的主要威胁。埃塞俄比亚的种植者依靠杀虫剂来控制这种害虫,但这种做法是不可持续的,因为这种昆虫能够快速产生抗药性。合理使用农药有助于延缓农药抗药性。埃塞俄比亚农业研究所 (EIAR) 的 Melkassa 中心在 2020 年至 2021 年的两个季节调查了性信息素和杀虫剂对番茄潜叶蝇种群的综合影响及其对番茄的损害。处理包括单独使用性信息素诱捕、单独使用杀虫剂以及结合使用性信息素和杀虫剂进行诱捕(综合处理)以及未处理的对照。四个领域,通过将每个田地分开以最大程度地减少昆虫成虫种群的移动,使用每个田地对每个处理进行三个重复的地块。通过计算昆虫的未成熟阶段以及对叶子和番茄果实的损害来评估处理效果。采矿幼虫的处理方式有显着差异,但卵的数量没有差异。未处理对照的叶片损伤明显高于其余处理。在这两年中,观察到受损果实百分比的结果趋势相似,在综合处理中最低,其次是单独使用杀虫剂、单独使用信息素诱捕器和未处理的对照。这项研究的结果表明,需要将信息素陷阱与杀虫剂结合起来,以更好地保护免受 通过计算昆虫的未成熟阶段以及对叶子和番茄果实的损害来评估处理效果。采矿幼虫的处理方式有显着差异,但卵的数量没有差异。未处理对照的叶片损伤明显高于其余处理。在这两年中,观察到受损果实百分比的结果趋势相似,在综合处理中最低,其次是单独使用杀虫剂、单独使用信息素诱捕器和未处理的对照。这项研究的结果表明,需要将信息素陷阱与杀虫剂结合起来,以更好地保护免受 通过计算昆虫的未成熟阶段以及对叶子和番茄果实的损害来评估处理效果。采矿幼虫的处理方式有显着差异,但卵的数量没有差异。未处理对照的叶片损伤明显高于其余处理。在这两年中,观察到受损果实百分比的结果趋势相似,在综合处理中最低,其次是单独使用杀虫剂、单独使用信息素诱捕器和未处理的对照。这项研究的结果表明,需要将信息素陷阱与杀虫剂结合起来,以更好地保护免受 未处理对照的叶片损伤明显高于其余处理。在这两年中,观察到受损果实百分比的结果趋势相似,在综合处理中最低,其次是单独使用杀虫剂、单独使用信息素诱捕器和未处理的对照。这项研究的结果表明,需要将信息素陷阱与杀虫剂结合起来,以更好地保护免受 未处理对照的叶片损伤明显高于其余处理。在这两年中,观察到受损果实百分比的结果趋势相似,在综合处理中最低,其次是单独使用杀虫剂、单独使用信息素诱捕器和未处理的对照。这项研究的结果表明,需要将信息素陷阱与杀虫剂结合起来,以更好地保护免受Tuta absoluta对番茄的破坏。

更新日期:2023-05-24
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