BREEDING APPLES TO DEVELOP INTEGRATED PRODUCTION

The prospects of producing new high quality apple varieties, which can be grown to a high standard without sprays, are good.
High levels of resistance to scab (Venturia inaequalis) and mildew (Podosphaera leucotricha) have been introduced into the cultivated apple and recent work has identified sources of good resistance to storage diseases and disorders.

Most pests can be controlled by predators and other components of biological control.
Rosy apple aphid (Dysaphis plantaginea) resistance is an exception, which merits inclusion in a breeding programme.

IHR, East Malling and FAW, Wadenswil are collaborating to produce new apple varieties suited to integrated production.
The main aim is to combine stable resistance with high fruit quality.

The concept of integrated production is being widened, to include weed control and tree size control.
This introduces the importance of breeding new rootstocks resistant to crown rot (Phytophthora spp.), which can crop efficiently in competitive conditions.

Symposium on Integrated Fruit Production

F.H. Alston, M. Kellerhals

https://doi.org/10.17660/ActaHortic.1990.285.18