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Filtering by: Subject Apples -- Diseases and pests -- Control Resource Type Dissertation Subject Pear -- Diseases and pests

Ecology of mites on pomaceous fruit trees and related wild hosts in Hood River Valley

Creator:

Jorgensen, Clive Darrel

Abstract:

The ecological interrelationships of mites occurring in and near the Hood River Valley, Oregon, pome fruit orchards were investigated to determine the possibility of an integrated control program using the species already present. Survey sampling methods were used to study mites on wild hosts (Crataegus douglasii Lindl., Crataegus columbiana Howell,...

Resource Type:

Dissertation

Full Text:

more and more on chemical pest control measures which assure higher production while producing fruit
Host selection, reproductive biology, host-specific development and mortality of the codling moth, Cydia pomonella (L.) (Lepidoptera: Torticidae), in apple and pear

Creator:

Marti, Santiago Marti

Abstract:

The biology and behavior of the codling moth, Cydia pomonella (L.), was studied to determine factors responsible for differences in susceptibility to moth damage among apple and pear cultivars. In release experiments, codling moth adults were intercepted in significantly greater numbers in host (apple, pear) than in non-host (maple) trees,...

Resource Type:

Dissertation

Full Text:

the world, codling moth is the key pest of pome fruits and its control dominates the control