SOME GROWTH REGULATORS: THEIR EFFECTIVENESS AGAINST ORCHARD PESTS AND SELECTIVITY TO PREDATORY AND PARASITIC ARTHROPODS

The orchard pests: codling moth, winter moth and leaf miners tested are effectively controlled by growth regulators: diflubenzuron, teflubenzuron and triflumuron.
Diflubenzuron reduced considerably the population of apple blossom weevil and apple sucker.

The selectivity of insect growth regulators to the tested predators (Anthocoris nemorum, Chrysopa carnea, Coccinella septempunctata, Episyrphus balteatus, Typhlodromus pyri) and parasitic wasp (Trichogramma cacoeciae) depends in a high degree on the predator species and their development stage.
Generalising, one can say, that growth regulators are only partially selective to the majority of natural enemies of orchard pests.

Symposium on Integrated Fruit Production

E. Niemczyk, M. Koslinska, A. Maciesiak, Z. Nowakowski, R. Olszak, A. Szufa

https://doi.org/10.17660/ActaHortic.1990.285.21