Biological Mite Control in Hudson and Champlain Valley Apple Orchards Through the Distribution and Conservation of Typhlodromus pyri 2001
Project Leader(s): K. Iungerman and P. Jentsch: Cornell Cooperative Extension and Department of Entomology
Cooperator(s): J. Nyrop and D. Straub: Cornell Department of Entomology
Type of grant: Biological control and pest biology
Project location(s): eastern NY
Abstract: In contrast to western New York where the mite predator Typhlodromus pyri is widespread and conserved to provide biological mite control, biological mite control has not been actively pursued in eastern New York orchards, at least in part because of the real or assumed absence of T. pyri. Previous research has shown that T. pyri can provide complete biological mite control in eastern New York orchards. During 2001 we began a project to demonstrate this on a large scale. We found that:
- Of 11 Hudson valley (HV) and 8 Champlain valley (CV) orchards where T. pyri were released, the predator was also present in approximately 80% of the plots in these orchards where it was not released.
- Release of T. pyri increased densities of the predator 2 to 3 fold compared to densities in plots where no releases were made.
- Densities of European red mite (Panonychus ulmi) remained low in release plots even though miticides were not used.
These results indicate the strong potential for using T. pyri in HV and CV orchards to control European red mite.