ISHS Acta Horticulturae 439: III International Strawberry Symposium
PROGRESS TOWARDS INTEGRATED PEST MANAGEMENT ON STRAWBERRY IN THE UNITED KINGDOM |
| Authors: | M.A. Easterbrook, A.M.E. Crook, J.V. Cross, D.W. Simpson |
| Keywords: | Fragaria x ananassa, IPM, biological control, Tetranychus urticae, two-spotted mite, Otiorhynchus sulcatus, vine weevil, predators, Phytoseiulus persimilis, insects, host resistance |
| DOI: | 10.17660/ActaHortic.1997.439.147 |
| Abstract:
Shortcomings in the effectiveness of chemical control, and pressures to reduce pesticide usage, mean that it is important to develop integrated pest management programmes for strawberry. To do this detailed information is required on possible components for such a system. Surveys have revealed the most numerous predators in strawberry fields, and laboratory tests, including the use of immunological techniques, are indicating the most effective predators of pests such as aphids, Tetranychus urticae and Otiorhynchus sulcatus. Field trials have shown that the exotic predatory mite Phytoseiulus persimilis can control T. urticae, either used alone or integrated with the early use of an acaricide. Native phytoseiid mites are also showing promise for biological control, and are partially resistant to some insecticides. The effect of pesticides on beneficial arthropods is being evaluated, to establish which materials could be used in an IPM system; improving the placement of soil insecticides should reduce their detrimental effect. On late-season strawberries, the possibility of using attractant trap plants as a control method for capsid pests is under investigation. Another possible component of IPM is host plant resistance and sources of resistance to key pests are being sought in cultivars and wild species. Promising sources of resistance to T. urticae have been found. | |
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