ELECTROSPUN MESOFIBERS, A NOVEL BIODEGRADABLE PHEROMONE DISPENSER TECHNOLOGY, ARE COMBINED WITH MECHANICAL DEPLOYMENT FOR EFFICIENT IPM OF LOBESIA BOTRANA IN VINEYARDS.

Hans E Hummel, S S Langner, M Breuer
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Abstract

Behaviour modifying pheromones are well known agents for disrupting mating communication of pest insects. For optimal activity, they must be dispensed in time and space at a quantitatively measurable, predetermined release rate covering the flight period of the target species. Pheromones appeal to environmentally conscientious entomologists for their biodegradability, non-toxicity and ecological compatibility. In attempts of combining the virtues of pheromones, suitable slow release dispensers, and their mechanical deployment, an ecologically sensible, reasonably priced and patented procedure was developed and tested with the vineyard pest Lobesia botrana (Lep.: Tortricidae). It is characterized by (1) Electrospun mesofibers with diameters ranging from 0.6 to 3.5 micrometres, containing disruptants and dispensing it by slow release diffusion into the crop, (2) simultaneous application of the fully biodegradable combination of pheromone with Ecoflex polyester mesofiber, (3) combination of mechanical deployment by multi-purpose cultivators of the prefabricated pheromone dispensers with other simultaneous cultivation measures, and thus further reducing labour time and treatment costs. The dispensers are biodegradable within half a year without leaving any objectionable residues. In the standard eco-toxicology tests pheromone dispensers are harmless to non-target organisms. The disruptive effect of one treatment lasts for seven weeks which covers well one of several flight periods of L. botrana.

摘要介绍了一种新型的生物可降解信息素分配技术——静电纺丝介孔纤维与机械部署相结合,对葡萄叶藤蔓进行高效ipm的方法。
行为修饰信息素是众所周知的干扰害虫交配交流的物质。为了获得最佳的活性,它们必须在时间和空间上以可定量测量的、预定的释放率分布在目标物种的飞行期间。信息素因其可生物降解性、无毒性和生态兼容性而受到环保昆虫学家的青睐。在将信息素的优点、合适的缓释剂及其机械部署相结合的尝试中,开发了一种生态合理、价格合理且具有专利的方法,并在葡萄园害虫Lobesia botrana (Lep)上进行了测试。:卷蛾科)。它的特点是:(1)直径在0.6 - 3.5微米之间的静电纺丝介纤维,含有干扰剂,并通过缓释扩散到作物中;(2)同时应用完全可生物降解的信息素与Ecoflex聚酯介纤维的组合;(3)将预制信息素分配器的多用途栽培机机械部署与其他同时栽培措施相结合。从而进一步减少劳动时间和治疗成本。这种分配器在半年内是可生物降解的,不会留下任何令人讨厌的残留物。在标准生态毒理学试验中,信息素分配器对非目标生物无害。一次处理的破坏效果持续7周,这正好覆盖了植物螺旋体几个飞行期中的一个。
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