Unitat Associada d'Entomologia Agrícola Universitat Jaume I (UJI)-Institut Valencià d'Investigacions Agràries (IVIA), Valencia, Spain.
Pest Manag Sci. 2010 Apr;66(4):365-70. doi: 10.1002/ps.1882.
The invasive red palm weevil, Rhynchophorus ferrugineus (Olivier), has become the major pest of palms in the Mediterranean Basin. Chemical control against this species is difficult because of its cryptic habits and is mainly based on the repeated application of large quantities of synthetic insecticides. The aim of this work has been to evaluate in the field the efficacy of imidacloprid (Confidor 240 OD) and Steinernema carpocapsae Weiser with chitosan (Biorend R Palmeras) as soil and stipe treatments respectively, alone or in combination, against this pest.
All treatments significantly reduced the mean number of immature stages of R. ferrugineus per palm. However, there were no significant differences among the different treatments considered. Efficacies ranged from 83.8 to 99.7% for the mean number of immature stages found in the palms and resulted in a significant increase in palm survival compared with the untreated control (75.0-90.0% versus 16.5% respectively).
Both imidacloprid and S. carpocapsae in a chitosan formulation proved highly effective against R. ferrugineus in the field, and their efficacies did not significantly change when used in combination.
入侵红火蚁 Rhynchophorus ferrugineus (Olivier) 已成为地中海盆地棕榈科植物的主要害虫。由于其隐蔽的习性，对该物种进行化学防治很困难，主要依赖于大量合成杀虫剂的重复使用。本研究的目的是评估在田间使用吡虫啉（康福多 240 OD）和斯氏线虫 Steinernema carpocapsae Weiser 与壳聚糖（Biorend R Palmeras）分别作为土壤和茎干处理，单独或联合使用，防治该害虫的效果。
所有处理均显著降低了每株棕榈树中未成熟阶段的 R. ferrugineus 的平均数量。然而，不同处理之间没有显著差异。处理后棕榈树中未成熟阶段的平均数量的防治效果在 83.8%至 99.7%之间，与未处理的对照相比，显著提高了棕榈树的存活率（分别为 75.0%至 90.0%与 16.5%）。
吡虫啉和壳聚糖中的斯氏线虫在田间对 R. ferrugineus 均表现出高度有效性，并且当联合使用时，其效果没有显著变化。
