8818: „Bait Sprays“ - eine Alternative zur Bekämpfung der Europäischen Kirschfruchtfliege Rhagoletis cerasi ? [Bait sprays - an alternative to control the European cherry fruit fly Rhagoletis cerasi ?]

Köppler, Kirsten; Storch, Volker and Vogt, Heidrun (2006) „Bait Sprays“ - eine Alternative zur Bekämpfung der Europäischen Kirschfruchtfliege Rhagoletis cerasi ? [Bait sprays - an alternative to control the European cherry fruit fly Rhagoletis cerasi ?]. Paper presented at ecofruit - 12th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing, Weinsberg/Germany, 31.1.-2.2.2006; Published in Boos, Markus, Eds. ecofruit - 12th International Conference on Cultivation Technique and Phytopathological Problems in Organic Fruit-Growing: Proceedings to the Conference from 31st January to 2nd February 2006 at Weinsberg/Germany, page pp. 61-66. Fördergemeinschaft Ökologischer Obstbau e.V. (FÖKO), Traubenplatz 5, D-74189 Weinsberg.

Summary

In 2005 initial experiments were carried out to control Rhagoletis cerasi with bait sprays. We used GF-120 fruit fly bait which contains Spinosad and NeemAzal®-T/S mixed in a sugar-yeast hydrolysate solution. 30 ml of bait sprays were applied on single cherry trees in field cages, where we released a defined number of cherry fruit flies. One experiment with GF-120 resulted in a reduction of fruit infestation of 96 % compared with the control. In other trials with GF-120 and Neem bait the effect on the cherry fruit fly population was monitored. After 24 hours GF-120 in a 5 % and 20 % solution led to a high reduction of flies (efficacy 85 %), whereas NeemAzal®-T/S in a 5 %, 10 %, and 20 % solution only resulted in efficacies between 34 % and 42 %. A significant effect of GF-120 was observed already after 3 hours.

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