ISHS Acta Horticulturae 475: VII International Symposium on Pear Growing
CONTROL OF SECONDARY PESTS IN A SELECTIVE PEST MANAGEMENT PROGRAM |
| Authors: | R.J. Hilton, P. VanBuskirk, P. Westigard |
| Keywords: | European earwig, Forficula auricularia, IPM, integrated pest management, pear, Pyrus communis |
| Abstract:
The selective control program in southern Oregon has enabled pear growers to significantly reduce their use of synthetic insecticides and acaricides. By curtailing the use of broad spectrum neurotoxins and emphasizing selective controls such as insect growth regulators and mating disruption for control of codling moth, other pests such as true bugs and the European earwig have become an increasing concern. Various chemical controls aimed primarily at the control of true bugs were evaluated for efficacy. The disruptive or non-target effects that might be associated with the use of these broad spectrum insecticides within a selective program were also assessed. The results indicated that the materials tested had some effect on limiting true bug levels, but no significant reduction in fruit damage due to true bug feeding was observed at harvest. Disruptive effects were observed in some instances, notably, codling moth damage was increased where chemical treatments were applied. The extent to which earwigs can cause fruit damage is not well documented, in part due to the fact that it is difficult to identify earwig damage with certainty. A cage study was performed to document the type of damage that earwig feeding can cause. | |
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