PREFERENCE AND NON-PREFERENCE IN MONITORING CABBAGE ROOT FLY, DELIA RADICUM /D. BRASSICAE/, OVIPOSITION BY TRAPS

In 1984 and 1985, the use of Freuler’s Swiss egg trap for recording oviposition of the cabbage root fly has been compared in a preference and a non-preference situation.
It is concluded that a non-preference situation gives a more reliable indication of early oviposition of D. radicum.

International Symposium on Diptera Pests in Vegetable Crops

H. den Ouden, J. Theunissen

https://doi.org/10.17660/ActaHortic.1988.219.1