The Spreading of the Horse-Chestnut Mining Moth Cameraria ohridella in Austria is still increasing, e.g. in the southern parts of the country. Because of the cool and wet weather during summer and autumn of 1996 the development of the larvae did not advance as fast as in the years before. Therefore, the infested trees lost their leaves not before late August. Different controlling methodes were tested and discussed: Spraying with DIMILIN (Diflubenzuron) in May before ovipostition works quite good. If using a good systemic insecticide, tree-infusion is also a recommendable controlling methode; whereas tree-implantes (ORTHENE) were not successful. Different alternative methodes such as soil-fertilization or the application of natural phyto-repellents were also discussed.
453 (Insekten [Für die weitere Unterteilung siehe Familien unter 14 oder alternativ (beschrieben nach Regelfall 1d in der Einleitung) können die Nummern alphabethisch nach Familien und Arten unterteilt werden (Appendix C)]) 145.7x18.14 (Bucculatricidae) 414.12 (Pestizide) 414.22 (Spritzen) 414.26 (Einspritzungen in die Pflanze) 414.27 (Einbringungen in den Boden) 176.1 (Dicotyledoneae [Siehe Anhang D]) [436] (Österreich)
